This page provides a complete list of all BHM-led science target cartons that have been considered within SDSS-V, up to and including the DR19 data release. These BHM cartons can be grouped by a ‘targeting generation’ identifier. A targeting generation is simply a well-defined collection of versioned target cartons, which have been used at some point for plate design or as inputs to robostrategy (the FPS survey planning tool).
List of targeting generations
The table below provides a list of all distinct targeting generations presented in this data release. The catalogdb crossmatch plan and tag point to specific versions of the crossmatch code (and control parameters) that were used to generate the underlying catalogdb.catalog table (see here for more details). The robostrategy runs (if any) which used each targeting generation are indicated. The approximate dates when the targeting generation was used for observations at the telescope(s) are indicated.
| targeting generation | catalogdb cross- match plan | catalogdb cross- match tag | Dates active | Robo-strategy runs | Notes |
|---|---|---|---|---|---|
| “v0.plates” | 0.1.0 | 0.1.0 | 2020-10 to 2021-07 | n/a | This was the targeting generation used during SDSS-V/Plate observations. This targeting generation was informally labelled “SDSS-V plates” in SDSS DR18. |
| “v0.5.epsilon -7-core-0” | 0.5.0 | 0.2.2 | 2022-03 to 2023-04 | epsilon-7 -core-0 | This was one of the targeting generations used for initial SDSS-V/FPS observations |
| “v0.5.2” | 0.5.0 | 0.2.2 | 2022-04 to 2023-08 | zeta-0 | This was one of the targeting generations used for initial SDSS-V/FPS observations |
| “v0.5.3” | 0.5.0 | 0.2.2 | none | none | This was one of the targeting generations defined for initial SDSS-V/FPS planning. “v0.5.3” was previously released as part of SDSS DR18. |
| “v0.5.5” | 0.5.0 | 0.2.2 | 2022-08 to 2023-07 | zeta-3, zeta-4-commiss-ioning-0 | This was one of the targeting generations used for initial SDSS-V/FPS observations |
Targeting generation “v0.plates”
The table below lists all BHM target cartons that are included in targeting generation “v0.plates”. Follow the carton name links for more details on each carton. Note that in DR18, this targeting generation was informally labelled as “SDSS-V plates”.
Targeting generations “v0.5.epsilon-7-core-0”, “v0.5.2”, “v0.5.3” and “v0.5.5”
The table below lists all BHM target cartons that are included in any of the “v0.5.epsilon-7-core-0”, “v0.5.2”, “v0.5.3” and “v0.5.5” targeting generations (used for early FPS planning and operations). Note that BHM target selection did not change across targeting generations “v0.5.2”, “v0.5.3” and “v0.5.5”. A detailed description of each carton is presented lower down this page, which can be navigated to easily by clicking the name of the carton.
BHM Carton descriptions
bhm_aqmes_med
target_selection plan: 0.5.0
target_selection tag: 0.3.0
Summary: Spectroscopically confirmed optically bright SDSS QSOs, selected from the SDSS QSO catalogue (DR16Q, Lyke et al., 2020). Located in 36 mostly disjoint fields within the SDSS QSO footprint that were pre-selected to contain higher than average numbers of bright QSOs and CSC targets. The list of field centres can be found within the target_selection repository.
Simplified description of selection criteria: Select all objects from SDSS DR16 QSO catalogue that have 16.0<sdss_psfmag_i<19.1 AB, that lie within 1.49 degrees of at least one AQMES-medium field location.
Catalogdb tables required: sdss_dr16_qso, sdss_dr16_specobj
Target priority options: 1100
Cadence options: dark_10x4_4yr
Implementation: bhm_aqmes.py
Number of targets: 2663
bhm_aqmes_med_faint
target_selection plan: 0.5.0
target_selection tag: 0.3.0
Summary: Spectroscopically confirmed optically faint SDSS QSOs, selected from the SDSS QSO catalogue (DR16Q, Lyke et al., 2020). Located in 36 mostly disjoint fields within the SDSS QSO footprint that were pre-selected to contain higher than average numbers of bright QSOs and CSC targets. The list of field centres can be found within the target_selection repository.
Simplified description of selection criteria: Select all objects from SDSS DR16 QSO catalogue that have 19.1<sdss_psfmag_i<21.0 AB, that lie within 1.49 degrees of at least one AQMES-medium field location.
Catalogdb tables required: sdss_dr16_qso, sdss_dr16_specobj
Target priority options: 3100
Cadence options: dark_10x4_4yr
Implementation: bhm_aqmes.py
Number of targets: 16853
bhm_aqmes_wide2
target_selection plan: 0.5.4
target_selection tag: 0.3.5
Summary: Spectroscopically confirmed optically bright SDSS QSOs, selected from the SDSS QSO catalogue (DR16Q, Lyke et al., 2020). Located in 425 fields within the SDSS QSO footprint, where the choice of survey area prioritized field that overlapped with the SPIDERS footprint (approx 180<b<360 deg), and/or had higher than average numbers of bright QSOs and CSC targets. The list of field centres can be found within the target_selection repository.
Simplified description of selection criteria: Select all objects from SDSS DR16 QSO catalogue that have 16.0<sdss_psfmag_i<19.1 AB, and that lie within 1.49 degrees of at least one AQMES-wide field location.
Catalogdb tables required: sdss_dr16_qso, sdss_dr16_specobj
Target priority options: 1210, 1211
Cadence options: dark_2x4
Implementation: bhm_aqmes.py
Number of targets: 24142
bhm_aqmes_wide2_faint
target_selection plan: 0.5.4
target_selection tag: 0.3.5
Summary: Spectroscopically confirmed optically faint SDSS QSOs, selected from the SDSS QSO catalogue (DR16Q, Lyke et al., 2020). Located in 425 fields within the SDSS QSO footprint, where the choice of survey area prioritized field that overlapped with the SPIDERS footprint (approx 180<b<360 deg), and/or had higher than average numbers of bright QSOs and CSC targets. The list of field centres can be found within the target_selection repository.
Simplified description of selection criteria: Select all objects from SDSS DR16 QSO catalogue that have 19.1<sdss_psfmag_i<21.0 AB, and that lie within 1.49 degrees of at least one AQMES-wide field location.
Catalogdb tables required: sdss_dr16_qso, sdss_dr16_specobj
Target priority options: 3210, 3211
Cadence options: dark_2x4
Implementation: bhm_aqmes.py
Number of targets: 99586
bhm_aqmes_bonus_core
target_selection plan: 0.5.4
target_selection tag: 0.3.5
Summary: Spectroscopically confirmed optically bright SDSS QSOs, selected from the SDSS QSO catalogue (DR16Q, Lyke et al., 2020). Located anywhere within the SDSS DR16Q footprint.
Simplified description of selection criteria: Select all objects from SDSS DR16 QSO catalogue that have 16.0<sdss_psfmag_i<19.1 AB
Catalogdb tables required: sdss_dr16_qso, sdss_dr16_specobj
Target priority options: 3300,3301
Cadence options: dark_1x4
Implementation: bhm_aqmes.py
Number of targets: 83163
bhm_aqmes_bonus_faint
target_selection plan: 0.5.4
target_selection tag: 0.3.5
Summary: Spectroscopically confirmed optically faint SDSS QSOs, selected from the SDSS QSO catalogue (DR16Q, Lyke et al., 2020). Located anywhere within the SDSS DR16Q footprint.
Simplified description of selection criteria: Select all objects from SDSS DR16 QSO catalogue that have 19.1<sdss_psfmag_i<21.0 AB
Catalogdb tables required: sdss_dr16_qso, sdss_dr16_specobj
Target priority options: 3302,3303
Cadence options: dark_1x4
Implementation: bhm_aqmes.py
Number of targets: 424163
bhm_aqmes_bonus_bright
target_selection plan: 0.5.4
target_selection tag: 0.3.5
Summary: Spectroscopically confirmed, extremely optically bright SDSS QSOs, selected from the SDSS QSO catalogue (DR16Q, Lyke et al., 2020). Located anywhere within the SDSS DR16Q footprint.
Simplified description of selection criteria: Select all objects from SDSS DR16 QSO catalogue that have 14.0<sdss_psfmag_i<18.0 AB
Catalogdb tables required: sdss_dr16_qso, sdss_dr16_specobj
Target priority options: 4040,4041
Cadence options: bright_3x1
Implementation: bhm_aqmes.py
Number of targets: 10848
bhm_rm_ancillary
target_selection plan: 0.5.0
target_selection tag: 0.3.0
Summary: A supporting sample of candidate QSOs which have been selected by the Gaia-unWISE AGN catalog (Shu et al., 2019) and/or the SDSS XDQSO catalog (Bovy et al., 2011). These targets are located within five (+1 backup) well known survey fields (SDSS-RM, COSMOS, XMM-LSS, ECDFS, CVZ-S/SEP, and ELIAS-S1).
Simplified description of selection criteria: Starting from a parent catalogue of optically selected objects in the RM fields (as presented by Yang and Shen, 2023), select candidate QSOs that satisfy all of the following: i) are identified via external ancillary methods (photo_bitmask & 3 != 0); ii) have 15<psfmag_i<21.5 AB (16<G<21.7 AB in the CVZ-S/SEP field); iii) do not have significant detections (>3σ) of parallax and/or proper motion in Gaia DR2; iv) are not vetoed due to results of visual inspections of recent spectroscopy; and v) do not lie in the SDSS-RM field
Catalogdb tables required: bhm_rm_v0_2, bhm_rm_tweaks (not made public in DR18)
Target priority options: 900-1050
Cadence options: dark_174x8, dark_100x8
Implementation: bhm_rm.py
Number of targets: 943
bhm_rm_core
target_selection plan: 0.5.0
target_selection tag: 0.3.0
Summary: A sample of candidate QSOs selected via the methods presented by Yang and Shen (2023). These targets are located within five (+1 backup) well known survey fields (SDSS-RM, COSMOS, XMM-LSS, ECDFS, CVZ-S/SEP, and ELIAS-S1).
Simplified description of selection criteria: Starting from a parent catalogue of optically selected objects in the RM fields (as presented by Yang and Shen, 2023), select candidate QSOs that satisfy all of the following: i) are identified via the Skew-T algorithm (skewt_qso == 1); ii) have 17<psfmag_i<21.5 AB (16<G<21.7 AB in the CVZ-S/SEP field); iii) do not have significant detections (>3σ) of parallax and/or proper motion in Gaia DR2; iv) are not vetoed due to results of visual inspections of recent spectroscopy; vi) have detections in all of the gri bands (a Gaia detection is sufficient in the CVZ-S/SEP field);and vii) do not lie in the SDSS-RM field
Catalogdb tables required: bhm_rm_v0_2, bhm_rm_tweaks (not made public in DR18)
Target priority options: 900-1050
Cadence options: dark_174x8, dark_100x8
Implementation: bhm_rm.py
Number of targets: 3721
bhm_rm_var
target_selection plan: 0.5.0
target_selection tag: 0.3.0
Summary: A sample of candidate QSOs selected via their optical variability properties, as presented by Yang and Shen (2023). These targets are located within five (+1 backup) well known survey fields (SDSS-RM, COSMOS, XMM-LSS, ECDFS, CVZ-S/SEP, and ELIAS-S1).
Simplified description of selection criteria: Starting from a parent catalogue of optically selected objects in the RM fields (as presented by Yang and Shen, 2023), select candidate QSOs that satisfy all of the following: i) have significant variability in the DES or PanSTARRS1 multi-epoch photometry (var_sn[g]>3 and var_rms[g]>0.05); ii) have 17<psfmag_i<20.5 AB (16<G<21.7 AB in the CVZ-S/SEP field); iii) do not have significant detections (>3σ) of parallax and/or proper motion in Gaia DR2; iv) are not vetoed due to results of visual inspections of recent spectroscopy; and vi) do not lie in the SDSS-RM field
Catalogdb tables required: bhm_rm_v0_2, bhm_rm_tweaks (not made public in DR18)
Target priority options: 900-1050
Cadence options: dark_174x8, dark_100x8
Implementation: bhm_rm.py
Number of targets: 934
bhm_rm_known_spec
target_selection plan: 0.5.0
target_selection tag: 0.3.0
Summary: A sample of known QSOs identified through optical spectroscopy from various projects, as collated by Yang and Shen (2023). These targets are located within five (+1 backup) well known survey fields (SDSS-RM, COSMOS, XMM-LSS, ECDFS, CVZ-S/SEP, and ELIAS-S1).
Simplified description of selection criteria: Starting from a parent catalogue of optically selected objects in the RM fields (as presented by Yang and Shen, 2023), select targets which satisfy all of the following: i) are flagged as having a spectroscopic identification (in the parent catalogue or in the bhm_rm_tweaks table); ii) have 15<psfmag_i<21.7 AB (SDSS-RM, CDFS, ELIAS-S1 field), 16<G<21.7 Vega (CVZ-S/SEP field), 15<psfmag_i<21.5 AB (COSMOS and XMM-LSS fields); iii) have a spectroscopic redshift in the range 0.005<z<7; iv) are not vetoed due to results of visual inspections of recent spectroscopy
Catalogdb tables required: bhm_rm_v0_2, bhm_rm_tweaks (not made public in DR18)
Target priority options: 900-1050
Cadence options: dark_174x8, dark_100x8
Implementation: bhm_rm.py
Number of targets: 3022
bhm_csc_apogee
target_selection plan: 0.5.15
target_selection tag: 0.3.14
Summary: X-ray sources from the CSC2.0 source catalogue with NIR counterparts in 2MASS PSC
Simplified description of selection criteria: Starting from the parent catalogue of CSC sources with optical/IR counterparts (bhm_csc_v2). Select entries satisfying the following criteria: i) NIR counterpart is from the 2MASS catalogue, ii) 2MASS H-band magnitude measurement is not null and in the accepted range for SDSS-V: 7.0<H<14.0. Allocate cadence (exposure time) requests based on H-band magnitude.
Catalogdb tables required: bhm_csc_v2
Target priority options: 2930-2939
Cadence options: bright_1x1,bright_3x1
Implementation: bhm_csc.py
Number of targets: 48928
bhm_csc_boss
target_selection plan: 0.5.15
target_selection tag: 0.3.14
Summary: X-ray sources from the CSC2.0 source catalogue with counterparts in Panstarrs1-DR1 or Gaia DR2.
Simplified description of selection criteria: Starting from the parent catalogue of CSC sources with optical/IR counterparts (bhm_csc_v2). Select entries satisfying the following criteria: i) optical counterpart is from the PanSTARRS1 or Gaia dr2 catalogues, ii) optical flux/magnitude is in the accepted range for SDSS-V: psfmag_[g,r,i,z]>13.5 AB and non-Null psfmag_i (objects with PanSTARRS1 counterparts); G,RP>13.0 Vega (Gaia DR2 counterparts). Deprioritize targets which already have good quality SDSS spectroscopy. Allocate cadence (exposure time) requests based on optical brightness (PS1 psfmag_i or Gaia G).
Catalogdb tables required: bhm_csc_v2, panstarrs1, tic_v8, tables of existing SDSS spectroscopy
Target priority options: 1920-1939, 2920-2939
Cadence options: bright_1x1,dark_1x2,dark_1x4
Implementation: bhm_csc.py
Number of targets: 122731
bhm_gua_bright
target_selection plan: 0.5.0
target_selection tag: 0.3.0
Summary: A sample of optically bright candidate AGN lacking spectroscopic confirmations, derived from the parent sample presented by Shu et al., (2019), who applied a machine-learning approach to select QSO candidates from a combination of the Gaia DR2 and unWISE catalogues.
Simplified description of selection criteria: Starting with the Shu et al., (2019) catalogue, select targets which satisfy the following criteria: i) have a Random Forest probability of being a QSO of>0.8, ii) are in the (dereddened) magnitude range suitable for BOSS spectroscopy in bright time (Gdered>13.0 and RPdered>13.5, as well as Gdered<18.5 or RPdered<18.5, Vega mags), iii) do not have good optical spectroscopic measurements from a previous iteration of SDSS.
Catalogdb tables required: gaia_unwise_agn, tic_v8, tables of existing SDSS spectroscopy
Target priority options: 4040
Cadence options: bright_2x1
Implementation: bhm_gua.py
Number of targets: 254601
bhm_gua_dark
target_selection plan: 0.5.0
target_selection tag: 0.3.0
Summary: A sample of optically faint candidate AGN lacking spectroscopic confirmations, derived from the parent sample presented by Shu et al., (2019), who applied a machine-learning approach to select QSO candidates from a combination of the Gaia DR2 and unWISE catalogues.
Simplified description of selection criteria: Starting with the Shu et al., (2019) catalogue, select targets which satisfy the following criteria: i) have a Random Forest probability of being a QSO of>0.8, ii) are in the (dereddened) magnitude range suitable for BOSS spectroscopy in dark time (Gdered>16.5 and RPdered>16.5, as well as Gdered<21.2 or RPdered<21.0, Vega mag), iii) do not have good optical spectroscopic measurements from a previous iteration of SDSS.
Catalogdb tables required: gaia_unwise_agn, tic_v8, several tables of existing SDSS spectroscopy
Target priority options: 3400
Cadence options: dark_1x4
Implementation: bhm_gua.py
Number of targets: 2156582
bhm_colr_galaxies_lsdr8
target_selection plan: 0.5.16
target_selection tag: 0.3.13
Summary: A supplementary magnitude limited sample of optically bright galaxies selected from the legacysurvey.org/dr8 optical/IR imaging catalogue. Selection is based on optical morphology, lack of Gaia DR2 parallax, and several magnitude cuts.
Simplified description of selection criteria: Starting from the legacy_survey_dr8 catalogue (lsdr8), select entries satisfying all of the following criteria: i) lsdr8 morphological type != ‘PSF’, ii) zero or Null parallax in Gaia DR2, iii) dereddened z-band model mag<19.0 AB, and dereddened z-band fiber mag<19.5 AB, and 16<apparent z-band fiber mag<19.0 AB, and apparent r-band fiber mag>16.0 AB, and Gaia G>15.0 Vega, and Gaia RP>15.0 Vega;
Catalogdb tables required: legacy_survey_dr8
Target priority options: 7100
Cadence options: bright_1x1, dark_1x1, dark_1x4
Implementation: bhm_galaxies.py
Number of targets: 7320203
bhm_spiders_agn_lsdr8
target_selection plan: 0.5.0
target_selection tag: 0.3.0
Summary: This is the highest priority carton for SPIDERS AGN wide area follow up. The carton provides optical counterparts to point-like (unresolved) X-ray sources detected in early reductions of the first 6-months of eROSITA all sky survey data (eRASS:1). The sample is expected to contain a mixture of QSOs, AGN, stars and compact objects. The X-ray sources have been cross-matched by the eROSITA-DE team to legacysurvey.org/dr8 optical/IR counterparts. All targets are located in the sky hemisphere where MPE controls the data rights (approx. 180<l<360 deg). Due to the footprint of lsdr8, nearly all targets in this carton are located at high Galactic latitudes |b|>15 deg.
Simplified description of selection criteria: Starting from a parent catalogue of eRASS:1 point source → legacysurvey.org/dr8 associations (method: NWAY assisted by optical/IR priors computed via a pre-trained Random Forest, building on Salvato et al., 2022), select targets which meet all of the following criteria: i) have eROSITA detection likelihood>6.0, ii) have an X-ray → optical/IR cross-match probability (NWAY) of p_any>0.1, iii) have 13.5<fibertotmag_r<22.5 or 13.5<fibertotmag_z<21.0, iv) are not saturated in legacysurvey imaging, v) have at least one observation in r-band and at least one observation in g- or z-band, vi) if detected by Gaia DR2 then have G>13.5 and RP>13.5 Vega. We deprioritise targets if any of the following criteria are met: a) the target already has existing good quality SDSS spectroscopy, b) the X-ray detection likelihood is <8.0, c) the target is a secondary X-ray→optical/IR association. We assign cadences (exposure time requests) based on optical brightness.
Catalogdb tables required: erosita_superset_agn (not released in DR18), legacy_survey_dr8, several tables of existing SDSS spectroscopy including sdss_dr16_specobj
Target priority options: 1520-1523, 1720-1723
Cadence options: bright_2x1, dark_1x2, dark_1x4
Implementation: bhm_spiders_agn.py
Number of targets: 235745
bhm_spiders_agn_ps1dr2
target_selection plan: 0.5.0
target_selection tag: 0.3.0
Summary: This is the second highest priority carton for SPIDERS AGN wide area follow up, it is included to expand the survey footprint beyond legacysurvey/dr8. The carton provides optical counterparts to point-like (unresolved) X-ray sources detected in early reductions of the first 6-months of eROSITA all sky survey data (eRASS:1). The sample is expected to contain a mixture of QSOs, AGN, stars and compact objects. The X-ray sources have been cross-matched by the eROSITA-DE team, first to CatWISE2020 mid-IR sources, and then to optical counterparts from the PanSTARRS1 dr2 catalogue. All targets are located in the sky hemisphere where MPE controls the data rights (approx. 180<l<360 deg), and at Dec>-30 deg, spanning a wide range of Galactic latitudes. Targets at low Galactic latitudes |b|<15 deg do not drive survey strategy.
Simplified description of selection criteria: Starting from a parent catalogue of eRASS:1 point source → CatWISE2020 → Pan-STARRS1 associations (method: NWAY assisted by IR priors computed via a pre-trained Random Forest, building on Salvato et al., 2022), select targets which meet all of the following criteria: i) have eROSITA detection likelihood>6.0, ii) have an X-ray→IR cross-match probability of p_any>0.1, iii) have psfmag_g, psfmag_r, psfmag_i, psfmag_z>13.5 AB and at least one of psfmag_g<22.5, psfmag_r<22.0, psfmag_i<21.5 or psfmag_z<20.5, iv) are not associated with a bad Pan-STARRS1-dr2 image stack, v) have non-null measurements of g_psfmag, r_psfmag and i_psfmag, vi) if detected by Gaia DR2 then have G>13.5 and RP>13.5 Vega. We deprioritise targets if any of the following criteria are met: a) the target already has existing good quality SDSS spectroscopy, b) the X-ray detection likelihood is <8.0, c) the target is a secondary X-ray→IR association. We assign cadences (exposure time requests) based on optical brightness.
Catalogdb tables required: erosita_superset_agn (not released in DR18), panstarrs1, several tables of existing SDSS spectroscopy including sdss_dr16_specobj
Target priority options: 1530-1533,1730-1733,3530-3533,3730-3732
Cadence options: bright_2x1, dark_1x2, dark_1x4
Implementation: bhm_spiders_agn.py
Number of targets: 200681
bhm_spiders_agn_gaiadr2
target_selection plan: 0.5.0
target_selection tag: 0.3.0
Summary: This is the third highest priority carton for SPIDERS AGN wide area follow up, it is included to expand the survey footprint to the full hemisphere where X-ray sources are available (beyond legacysurvey/dr8 and Pan-STARRS1). The carton provides optical counterparts to point-like (unresolved) X-ray sources detected in early reductions of the first 6-months of eROSITA all sky survey data (eRASS:1). The sample is expected to contain a mixture of QSOs, AGN, stars and compact objects. The X-ray sources have been cross-matched by the eROSITA-DE team, first to CatWISE2020 mid-IR sources, and then to optical counterparts from the Gaia-dr2 catalogue. All targets are located in the sky hemisphere where MPE controls the data rights (approx. 180<l<360 deg). The targets in this carton distributed over a wide range of Galactic latitudes, but targets at low Galactic latitudes |b|<15 deg do not drive survey strategy.
Simplified description of selection criteria: Starting from a parent catalogue of eRASS:1 point source → CatWISE2020 → Gaia DR2 associations (method: NWAY assisted by IR priors computed via a pre-trained Random Forest, building on Salvato et al., 2022), select targets which meet all of the following criteria: i) have eROSITA detection likelihood>6.0, ii) have an X-ray→IR cross-match probability of p_any>0.1, iii) have G>13.5 and RP>13.5 AB. We deprioritise targets if any of the following criteria are met: a) the target already has existing good quality SDSS spectroscopy, b) the X-ray detection likelihood is <8.0, c) the target is a secondary X-ray→IR association. We assign cadences (exposure time requests) based on optical brightness.
Catalogdb tables required: erosita_superset_agn (not released in DR18), tic_v8, several tables of existing SDSS spectroscopy including sdss_dr16_specobj
Target priority options: 1540-1543,1740-1743,3540-3543,3740-3742
Cadence options: bright_2x1, dark_1x2, dark_1x4
Implementation: bhm_spiders_agn.py
Number of targets: 324576
bhm_spiders_agn_skymapperdr2
target_selection plan: 0.5.0
target_selection tag: 0.3.0
Summary: This is a lower ranked carton for SPIDERS AGN wide area follow up, it supplements the survey in areas which rely on Gaia-DR2 (beyond legacysurvey/dr8 and Pan-STARRS1) by recovering extended targets (galaxies) that are missed by Gaia. The carton provides optical counterparts to point-like (unresolved) X-ray sources detected in early reductions of the first 6-months of eROSITA all sky survey data (eRASS:1). The sample is expected to contain a mixture of QSOs, AGN, stars and compact objects. The X-ray sources have been cross-matched by the eROSITA-DE team, first to CatWISE2020 mid-IR sources, and then to optical counterparts from the SkyMapper-dr2 catalogue. All targets are located in the sky hemisphere where MPE controls the data rights (approx. 180<l<360 deg) and at Dec<0deg, spanning a wide range of Galactic latitudes. Targets at low Galactic latitudes |b|<15 deg do not drive survey strategy.
Simplified description of selection criteria: Starting from a parent catalogue of eRASS:1 point source → CatWISE2020 → SkyMapper-dr2 associations (method: NWAY assisted by IR priors computed via a pre-trained Random Forest, building on Salvato et al., 2022), select targets which meet all of the following criteria: i) have eROSITA detection likelihood>6.0, ii) have an X-ray→IR cross-match probability of p_any>0.1, iii) have psfmag_g, psfmag_r, psfmag_i, psfmag_z>13.5 AB and at least one of psfmag_g<22.5, psfmag_r<22.0, psfmag_i<21.5 or psfmag_z<20.5, iv) Are not associated with a bad SkyMapper source detection (flags<4), v) have non-null measurements in at least one of g_psfmag, r_psfmag and i_psfmag, vi) if detected by Gaia DR2 then have G>13.5 and RP>13.5 Vega. We deprioritise targets if any of the following criteria are met: a) the target already has existing good quality SDSS spectroscopy, b) the X-ray detection likelihood is <8.0, c) the target is a secondary X-ray→IR association. We assign cadences (exposure time requests) based on optical brightness.
Catalogdb tables required: erosita_superset_agn (not released in DR18), skymapper_dr2, several tables of existing SDSS spectroscopy including sdss_dr16_specobj
Target priority options: 1550-1553,1750-1753,3550-3553,3750-3752
Cadence options: bright_2x1, dark_1x2, dark_1x4
Implementation: bhm_spiders_agn.py
Number of targets: 82683
bhm_spiders_agn_supercosmos
target_selection plan: 0.5.0
target_selection tag: 0.3.0
Summary: This is a lower ranked carton for SPIDERS AGN wide area follow up, it supplements the survey in areas which rely on Gaia-DR2 (beyond legacysurvey/dr8 and Pan-STARRS1) by recovering extended targets (galaxies) that are missed by Gaia. The carton provides optical counterparts to point-like (unresolved) X-ray sources detected in early reductions of the first 6-months of eROSITA all sky survey data (eRASS:1). The sample is expected to contain a mixture of QSOs, AGN, stars and compact objects. The X-ray sources have been cross-matched by the eROSITA-DE team, first to CatWISE2020 mid-IR sources, and then to optical counterparts from the SuperCosmos Sky Surveys catalogue (derived from scans of photographic plates). All targets are located in the sky hemisphere where MPE controls the data rights (approx. 180<l<360 deg), spanning a wide range of Galactic latitudes. Targets at low Galactic latitudes |b|<15 deg do not drive survey strategy.
Simplified description of selection criteria: Starting from a parent catalogue of eRASS:1 point source → CatWISE2020 → SuperCosmos associations (method: NWAY assisted by IR priors computed via a pre-trained Random Forest, building on Salvato et al., 2022), select targets which meet all of the following criteria: i) have eROSITA detection likelihood>6.0, ii) have an X-ray→IR cross-match probability of p_any>0.1, iii) have scormagb, scormagr2, scormagi>13.5 Vega and at least one of scormagb<22.5, scormagr2<22.0, or scormagi<21.5, iv) if detected by Gaia DR2 then have G>13.5 and RP>13.5 Vega. We deprioritise targets if any of the following criteria are met: a) the target already has existing good quality SDSS spectroscopy, b) the X-ray detection likelihood is <8.0, c) the target is a secondary X-ray→IR association. We assign cadences (exposure time requests) based on optical brightness.
Catalogdb tables required: erosita_superset_agn (not released in DR18), supercosmos, several tables of existing SDSS spectroscopy including sdss_dr16_specobj
Target priority options: 1560-1563,1760-1763,3560-3563,3760-3763
Cadence options: bright_2x1, dark_1x2, dark_1x4
Implementation: bhm_spiders_agn.py
Number of targets: 430780
bhm_spiders_agn_efeds_stragglers
target_selection plan: 0.5.0
target_selection tag: 0.3.0
Summary: This is an opportunistic supplementary carton for SPIDERS AGN follow up, aiming, where fiber resources allow, to gather a small additional number of spectra for targets in the eFEDS field (which has been repeatedly surveyed in earlier iterations of SDSS). This carton provides optical counterparts to point-like (unresolved) X-ray sources detected in early reductions of the eROSITA/eFEDS performance validation field. The sample is expected to contain a mixture of QSOs, AGN, stars and compact objects. The X-ray sources have been cross-matched by the eROSITA-DE team to legacysurvey.org/dr8 optical/IR counterparts. All targets in this carton are located within the eFEDS field (approx 126<RA<146, -3<Dec<+6 deg). These targets do not drive survey strategy.
Simplified description of selection criteria: Starting from a parent catalogue of eFEDS point source → legacysurvey.org/dr8 associations (method: NWAY assisted by optical/IR priors computed via a pre-trained Random Forest, see Salvato et al., 2022), select targets which meet all of the following criteria: i) have eROSITA detection likelihood>6.0, ii) have an X-ray → optical/IR cross-match probability (NWAY) of p_any>0.1, iii) have 13.5<fibertotmag_r<22.5 or 13.5<fibertotmag_z<21.0, iv) are not saturated in legacysurvey imaging, v) have at least one observation in r-band and at least one observation in g- or z-band, vi) if detected by Gaia DR2 then have G>13.5 and RP>13.5 Vega. We deprioritise targets if any of the following criteria are met: a) the target already has existing good quality SDSS spectroscopy, b) the X-ray detection likelihood is <8.0, c) the target is a secondary X-ray→optical/IR association. We assign cadences (exposure time requests) based on optical brightness.
Catalogdb tables required: erosita_superset_agn (not released in DR18), legacy_survey_dr8, several tables of existing SDSS spectroscopy including sdss_dr16_specobj
Target priority options: 1510-1514, 1710-1714
Cadence options: bright_2x1, dark_1x2, dark_1x4
Implementation: bhm_spiders_agn.py
Number of targets: 15926
bhm_spiders_agn_sep
target_selection plan: 0.5.0
target_selection tag: 0.3.0
Summary: This special carton is dedicated to SPIDERS AGN follow up in the CVZ-S/SEP field. The carton provides optical counterparts to point-like (unresolved) X-ray sources detected in a dedicated analysis of the first 6-months of eROSITA scanning data near the SEP. The X-ray sources have been cross-matched by the eROSITA-DE team, first to CatWISE2020 mid-IR sources, and then to optical counterparts from the Gaia-dr2 catalogue, using additional filtering (including Gaia EDR3 astrometric info) to reduce the contamination from foreground stars located in the LMC. All targets are located within 1.5 deg of the SEP (RA,Dec = 90.0,-66.56 deg).
Simplified description of selection criteria: Starting from a parent catalogue of eRASS:1/SEP point source → CatWISE2020 → Gaia DR2 associations (method: NWAY assisted by IR priors computed via a pre-trained Random Forest, building on Salvato et al., 2022), select targets which meet all of the following criteria: i) have eROSITA detection likelihood>6.0, ii) have an X-ray→IR cross-match probability of p_any>0.1, iii) have G>13.5 and RP>13.5 AB. We deprioritise targets if any of the following criteria are met: a) the X-ray detection likelihood is <8.0, b) the target is a secondary X-ray→IR association. We assign cadences (exposure time requests) based on optical brightness.
Catalogdb tables required: erosita_superset_agn (not released in DR18), tic_v8, several tables of existing SDSS spectroscopy including sdss_dr16_specobj
Target priority options: 1510,1512
Cadence options: bright_2x1, dark_1x2, dark_1x4
Implementation: bhm_spiders_agn.py
Number of targets: 697
bhm_spiders_clusters_lsdr8
target_selection plan: 0.5.0
target_selection tag: 0.3.0
Summary: This is the highest priority carton for SPIDERS Clusters wide area follow up. The carton provides a list of galaxies which are candidate members of clusters selected from early reductions of the first 6-months of eROSITA all sky survey data (eRASS:1). The X-ray clusters have been associated by the eROSITA-DE team to legacysurvey.org/dr8 optical/IR counterparts using the eROMAPPER red-sequence finder algorithm (Rykoff et al., 2014; Ider Chitham et al., 2020). All targets are located in the sky hemisphere where MPE controls the data rights (approx. 180<l<360 deg). Due to the footprint of lsdr8, nearly all targets in this carton are located at high Galactic latitudes |b|>15 deg.
Simplified description of selection criteria: Starting from a parent catalogue of eRASS:1 → legacysurvey.org/dr8 eROMAPPER cluster associations, select targets which meet all of the following criteria: i) have 13.5<fibertotmag_r<21.0 or 13.5<fibertotmag_z<20.0, ii) if detected by Gaia DR2 then have G>13.5 and RP>13.5 Vega, iii) do not have existing good quality SDSS spectroscopy. We assign a range of priorities to targets in this carton, with BCGs top ranked, followed by candidate member galaxies according their probability of membership. We assign cadences (exposure time requests) based on optical brightness.
Catalogdb tables required: erosita_superset_clusters, legacy_survey_dr8, several tables of existing SDSS spectroscopy including sdss_dr16_specobj, bhm_efeds_veto
Target priority options: 1501,1630-1659
Cadence options: bright_2x1, dark_1x2, dark_1x4
Implementation: bhm_spiders_clusters.py
Number of targets: 87490
bhm_spiders_clusters_ps1dr2
target_selection plan: 0.5.0
target_selection tag: 0.3.0
Summary: This is the second highest priority carton for SPIDERS Clusters wide area follow up, it is designed to expand the survey area beyond the legacysurvey/dr8 footprint. The carton provides a list of galaxies which are candidate members of clusters selected from early reductions of the first 6-months of eROSITA all sky survey data (eRASS:1). The X-ray clusters have been associated by the eROSITA-DE team to the PanSTARRS1 dr2 catalogue using the eROMAPPER red-sequence finder algorithm (Rykoff et al., 2014; Ider Chitham et al., 2020). All targets are located in the sky hemisphere where MPE controls the data rights (approx. 180<l<360 deg). Nearly all targets in this carton are located at high Galactic latitudes |b|>15 deg.
Simplified description of selection criteria: Starting from a parent catalogue of eRASS:1 → Pan-STARRS1-dr2 eROMAPPER cluster associations, select targets which meet all of the following criteria: i) have psfmag_r, psfmag_i, psfmag_z>13.5 AB and at least one of psfmag_r<21.5, psfmag_i<21.0 or psfmag_z<20.5, ii) do not have existing good quality SDSS spectroscopy. We assign a range of priorities to targets in this carton, with BCGs top ranked, followed by candidate member galaxies according their probability of membership. We assign cadences (exposure time requests) based on optical brightness.
Catalogdb tables required: erosita_superset_clusters, panstarrs1, several tables of existing SDSS spectroscopy including sdss_dr16_specobj, bhm_efeds_veto
Target priority options: 1502,1660-1689
Cadence options: bright_2x1,dark_1x2,dark_1x4
Implementation: bhm_spiders_clusters.py
Number of targets: 86179
bhm_spiders_clusters_efeds_stragglers
target_selection plan: 0.5.0
target_selection tag: 0.3.0
Summary: This is an opportunistic supplementary carton for SPIDERS Clusters follow up, aiming, where fiber resources allow, to gather a small additional number of spectra for targets in the eFEDS field (which has been repeatedly surveyed in earlier iterations of SDSS). The carton provides a list of galaxies which are candidate members of clusters selected from early reductions of the eROSITA performance verification survey in the eFEDS field. The X-ray clusters have been associated by the eROSITA-DE team to legacysurvey.org/dr8 optical/IR counterparts. All targets in this carton are located within the eFEDS field (approx 126<RA<146, -3<Dec<+6 deg).
Simplified description of selection criteria: Starting from a parent catalogue of eFEDS → legacysurvey.org/dr8 cluster associations (eROMAPPER, Rykoff et al., 2014; Ider Chitham et al., 2020; Liu et al., 2022), select targets which meet all of the following criteria: i) have 13.5<fibertotmag_r<21.0 or 13.5<fibertotmag_z<20.0, ii) if detected by Gaia DR2 then have G>13.5 and RP>13.5 Vega, iii) do not have existing good quality SDSS spectroscopy. We assign a range of priorities to targets in this carton, with BCGs top ranked, followed by candidate member galaxies according their probability of membership. We assign cadences (exposure time requests) based on optical brightness.
Catalogdb tables required: erosita_superset_clusters, legacy_survey_dr8, several tables of existing SDSS spectroscopy including sdss_dr16_specobj, bhm_efeds_veto
Target priority options: 1500,1600-1629
Cadence options: dark_1x2,dark_1x4
Implementation: bhm_spiders_clusters.py
Number of targets: 3060
bhm_spiders_agn-efeds
target_selection plan: 0.1.0
target_selection tag: 0.1.0
Summary: A carton used during SDSS-V plate-mode observations, that contains candidate AGN targets found in the eROSITA/eFEDS X-ray survey field. This carton provides optical counterparts to point-like (unresolved) X-ray sources detected in early reductions (‘c940/V2T’) of the eROSITA/eFEDS performance validation field. The sample is expected to contain a mixture of QSOs, AGN, stars and compact objects. The X-ray sources have been cross-matched by the eROSITA-DE team to legacysurvey.org/dr8 optical/IR counterparts. All targets in this carton are located within the eFEDS field (approx 126<RA<146, -3<Dec<+6 deg).
Simplified description of selection criteria: Starting from a parent catalogue of eFEDS point source → legacysurvey.org/dr8 associations (primarily via NWAY assisted by optical/IR priors computed via a pre-trained Random Forest, see Salvato et al., 2022, supplemented by counterparts selected via a Likelihood Ratio using r-band magnitudes), select targets which meet all of the following criteria: i) have eROSITA detection likelihood>6.0, ii) have an X-ray → optical/IR cross-match probability of either p_any>0.1 (NWAY associations) or LR>0.2 (Likelihood Ratio associations), iii) have fibermag_r>16.5 and fibermag_r<22.0 or fibermag_z<21.0, and iv) did not receive high quality spectroscopy during the SDSS-IV= observations of the eFEDS field (Abdurro’uf et al., 2022). We deprioritise targets if any of the following criteria are met: a) the target already has existing good quality SDSS spectroscopy in SDSS DR16, b) the X-ray detection likelihood is <8.0, c) the target is a secondary X-ray→optical/IR association, or d) if the optical/IR counterpart was only chosen by the LR method. All targets were assigned a nominal cadence of: bhm_spiders_1x8 (8x15mins dark time).
Catalogdb tables required: bhm_spiders_agn_superset (not released in DR18), legacy_survey_dr8, sdss_dr16_specobj and bhm_efeds_veto
Target priority options: 1510-1519
Cadence options: bhm_spiders_1x8
Implementation: bhm_spiders_agn.py
Number of targets: 12459
bhm_spiders_clusters-efeds-ls-redmapper
target_selection plan: 0.1.0
target_selection tag: 0.1.0
Summary: A carton used during SDSS-V plate-mode observations, that contains galaxy cluster targets found in the eROSITA/eFEDS X-ray survey field. The carton provides a list of galaxies which are candidate members of clusters selected from early reductions (‘c940’) of the eROSITA performance verification survey in the eFEDS field. The parent sample of galaxy clusters and their member galaxies have been selected via a joint analysis of X-ray and (several) optical/IR datasets using the eROMAPPER red-sequence finder algorithm (Rykoff et al., 2014; Ider Chitham et al., 2020). This particular carton relies on optical/IR data from legacysurvey.org/dr8. All targets in this carton are located within the eFEDS field (approx 126<RA<146, -3<Dec<+6 deg).
Simplified description of selection criteria: Starting from a parent catalogue of eFEDS → optical/IR cluster associations, select targets which meet all of the following criteria: i) are selected by eROMAPPER applied to legacysurvey.org/dr8 photometric data, ii) have eROSITA X-ray detection likelihood > 8.0, iii) have fibermag_r>16.5 and fibermag_r<21.0 or fibermag_z<20.0, iv) do not have existing good quality (SDSS or external) spectroscopy. We assign a range of priorities to targets in this carton, with BCGs top ranked, followed by candidate member galaxies according their probability of membership. All targets were assigned a nominal cadence of: bhm_spiders_1x8 (8x15mins dark time).
Catalogdb tables required: bhm_spiders_clusters_superset, legacy_survey_dr8, several tables of existing SDSS spectroscopy including sdss_dr16_specobj, bhm_efeds_veto
Target priority options: 1500, 1511–1610
Cadence options: dark_1x8
Implementation: bhm_spiders_clusters.py
Number of targets: 4432
bhm_spiders_clusters-efeds-sdss-redmapper
target_selection plan: 0.1.0
target_selection tag: 0.1.0
Summary: A carton used during SDSS-V plate-mode observations, that contains galaxy cluster targets found in the eROSITA/eFEDS X-ray survey field. The carton provides a list of galaxies which are candidate members of clusters selected from early reductions (‘c940’) of the eROSITA performance verification survey in the eFEDS field. The parent sample of galaxy clusters and their member galaxies have been selected via a joint analysis of X-ray and (several) optical/IR datasets using the eROMAPPER red-sequence finder algorithm (Rykoff et al., 2014; Ider Chitham et al., 2020). This particular carton relies on optical/IR data from SDSS/dr13. All targets in this carton are located within the eFEDS field (approx 126<RA<146, -3<Dec<+6 deg).
Simplified description of selection criteria: Starting from a parent catalogue of eFEDS → optical/IR cluster associations, select targets which meet all of the following criteria: i) are selected by eROMAPPER applied to SDSS/dr13 photometric data, ii) have eROSITA X-ray detection likelihood > 8.0, iii) have fibermag_r>16.5 and fibermag_r<21.0 or fibermag_z<20.0, iv) do not have existing good quality (SDSS or external) spectroscopy. We assign a range of priorities to targets in this carton, with BCGs top ranked, followed by candidate member galaxies according their probability of membership. All targets were assigned a nominal cadence of: bhm_spiders_1x8 (8x15mins dark time).
Catalogdb tables required: bhm_spiders_clusters_superset, legacy_survey_dr8, several tables of existing SDSS spectroscopy including sdss_dr16_specobj, bhm_efeds_veto
Target priority options: 1500, 1511-1610
Cadence options: dark_1x8
Implementation: bhm_spiders_clusters.py
Number of targets: 4304
bhm_spiders_clusters-efeds-hsc-redmapper
target_selection plan: 0.1.0
target_selection tag: 0.1.0
Summary: A carton used during SDSS-V plate-mode observations, that contains galaxy cluster targets found in the eROSITA/eFEDS X-ray survey field. The carton provides a list of galaxies which are candidate members of clusters selected from early reductions (‘c940’) of the eROSITA performance verification survey in the eFEDS field. The parent sample of galaxy clusters and their member galaxies have been selected via a joint analysis of X-ray and (several) optical/IR datasets using the eROMAPPER red-sequence finder algorithm (Rykoff et al., 2014; Ider Chitham et al., 2020). This particular carton relies on optical/IR data from the Hyper Suprime-Cam Subaru Strategic Program (HSC-SSP). All targets in this carton are located within the eFEDS field (approx 126<RA<146, -3<Dec<+6 deg).
Simplified description of selection criteria: Starting from a parent catalogue of eFEDS → optical/IR cluster associations, select targets which meet all of the following criteria: i) are selected by eROMAPPER applied to HSC-SSP photometric data, ii) have eROSITA X-ray detection likelihood > 8.0, iii) have fibermag_r>16.5 and fibermag_r<21.0 or fibermag_z<20.0, iv) do not have existing good quality (SDSS or external) spectroscopy. We assign a range of priorities to targets in this carton, with BCGs top ranked, followed by candidate member galaxies according their probability of membership. All targets were assigned a nominal cadence of: bhm_spiders_1x8 (8x15mins dark time).
Catalogdb tables required: bhm_spiders_clusters_superset, legacy_survey_dr8, several tables of existing SDSS spectroscopy including sdss_dr16_specobj, bhm_efeds_veto
Target priority options: 1500, 1511-1610
Cadence options: dark_1x8
Implementation: bhm_spiders_clusters.py
Number of targets: 924
bhm_spiders_clusters-efeds-erosita
target_selection plan: 0.1.0
target_selection tag: 0.1.0
Summary: A carton used during SDSS-V plate-mode observations, that contains galaxy cluster targets found in the eROSITA/eFEDS X-ray survey field. The carton provides a list of galaxies which are candidate members of clusters selected from early reductions (‘c940’) of the eROSITA performance verification survey in the eFEDS field. The parent sample of galaxy clusters and their member galaxies have been selected via a joint analysis of X-ray and (several) optical/IR datasets. This particular carton includes counterparts to X-ray extended sources that were not selected by the eROMAPPER red seuence finder algorithm when applied to any of the legacysurvey/dr8, SDSS/dr13 or HSC-SSP datasets (i.e. complementary to the cartons: bhm_spiders_clusters-efeds-ls-redmapper, bhm_spiders_clusters-efeds-sdss-redmapper and bhm_spiders_clusters-efeds-hsc-redmapper). All targets in this carton are located within the eFEDS field (approx 126<RA<146, -3<Dec<+6 deg).
Simplified description of selection criteria: Starting from a parent catalogue of eFEDS → optical/IR cluster associations, select targets which meet all of the following criteria: i) are identified as being X-ray extended but not selected via the eROMAPPER algorithm, ii) have eROSITA X-ray detection likelihood > 8.0, iii) have fibermag_r>16.5 and fibermag_r<21.0 or fibermag_z<20.0, iv) do not have existing good quality (SDSS or external) spectroscopy. We assign a range of priorities to targets in this carton, with BCGs top ranked, followed by candidate member galaxies according their probability of membership. All targets were assigned a nominal cadence of: bhm_spiders_1x8 (8x15mins dark time).
Catalogdb tables required: bhm_spiders_clusters_superset, legacy_survey_dr8, several tables of existing SDSS spectroscopy including sdss_dr16_specobj, bhm_efeds_veto
Target priority options: 1500, 1511-1535
Cadence options: dark_1x8
Implementation: bhm_spiders_clusters.py
Number of targets: 15
bhm_aqmes_med
target_selection plan: 0.1.0
target_selection tag: 0.1.0
Summary: Spectroscopically confirmed optically bright SDSS QSOs, selected from the SDSS QSO catalogue (DR16Q, Lyke et al., 2020). Located in 36 mostly disjoint fields within the SDSS QSO footprint that were pre-selected to contain higher than average numbers of bright QSOs and CSC targets. The list of field centres can be found within the target_selection repository.
Simplified description of selection criteria: Select all objects from SDSS DR16 QSO catalogue that have 16.0<sdss_psfmag_i<19.1 AB, that lie within 1.49 degrees of at least one AQMES-medium field location.
Catalogdb tables required: sdss_dr16_qso, sdss_dr16_specobj
Target priority options: 1100
Cadence options: bhm_aqmes_medium_10x4
Implementation: bhm_aqmes.py
Number of targets: 2663
bhm_aqmes_med-faint
target_selection plan: 0.1.0
target_selection tag: 0.1.0
Summary: Spectroscopically confirmed optically faint SDSS QSOs, selected from the SDSS QSO catalogue (DR16Q, Lyke et al., 2020). Located in 36 mostly disjoint fields within the SDSS QSO footprint that were pre-selected to contain higher than average numbers of bright QSOs and CSC targets. The list of field centres can be found within the target_selection repository.
Simplified description of selection criteria: Select all objects from SDSS DR16 QSO catalogue that have 19.1<sdss_psfmag_i<21.0 AB, that lie within 1.49 degrees of at least one AQMES-medium field location.
Catalogdb tables required: sdss_dr16_qso, sdss_dr16_specobj
Target priority options: 3100
Cadence options: bhm_aqmes_medium_10x4
Implementation: bhm_aqmes.py
Number of targets: 16853
bhm_aqmes_wide2
target_selection plan: 0.1.0
target_selection tag: 0.1.0
Summary: Spectroscopically confirmed optically bright SDSS QSOs, selected from the SDSS QSO catalogue (DR16Q, Lyke et al., 2020). Located in 330 fields within the SDSS QSO footprint, where the choice of survey area prioritized fields that overlapped with the SPIDERS footprint (approx 180<b<360 deg), and/or had higher than average numbers of bright QSOs and CSC targets. The list of field centres can be found within the target_selection repository.
Simplified description of selection criteria: Select all objects from SDSS DR16 QSO catalogue that have 16.0<sdss_psfmag_i<19.1 AB, and that lie within 1.49 degrees of at least one AQMES-wide2 field location.
Catalogdb tables required: sdss_dr16_qso, sdss_dr16_specobj
Target priority options: 1210
Cadence options: bhm_aqmes_wide_2x4
Implementation: bhm_aqmes.py
Number of targets: 18376
bhm_aqmes_wide2-faint
target_selection plan: 0.1.0
target_selection tag: 0.1.0
Summary: Spectroscopically confirmed optically faint SDSS QSOs, selected from the SDSS QSO catalogue (DR16Q, Lyke et al., 2020). Located in 330 fields within the SDSS QSO footprint, where the choice of survey area prioritized field that overlapped with the SPIDERS footprint (approx 180<b<360 deg), and/or had higher than average numbers of bright QSOs and CSC targets. The list of field centres can be found within the target_selection repository.
Simplified description of selection criteria: Select all objects from SDSS DR16 QSO catalogue that have 19.1<sdss_psfmag_i<21.0 AB, and that lie within 1.49 degrees of at least one AQMES-wide2 field location.
Catalogdb tables required: sdss_dr16_qso, sdss_dr16_specobj
Target priority options: 3210
Cadence options: bhm_aqmes_wide_2x4
Implementation: bhm_aqmes.py
Number of targets:
bhm_aqmes_wide3
target_selection plan: 0.1.0
target_selection tag: 0.1.0
Summary: Spectroscopically confirmed optically bright SDSS QSOs, selected from the SDSS QSO catalogue (DR16Q, Lyke et al., 2020). Located in 95 fields within the SDSS QSO footprint, where the choice of survey area prioritized fields having higher than average numbers of bright QSOs and CSC targets. The list of field centres can be found within the target_selection repository.
Simplified description of selection criteria: Select all objects from SDSS DR16 QSO catalogue that have 16.0<sdss_psfmag_i<19.1 AB, and that lie within 1.49 degrees of at least one AQMES-wide3 field location.
Catalogdb tables required: sdss_dr16_qso, sdss_dr16_specobj
Target priority options: 1210
Cadence options: bhm_aqmes_wide_3x4
Implementation: bhm_aqmes.py
Number of targets: 5785
bhm_aqmes_wide3-faint
target_selection plan: 0.1.0
target_selection tag: 0.1.0
Summary: Spectroscopically confirmed optically faint SDSS QSOs, selected from the SDSS QSO catalogue (DR16Q, Lyke et al., 2020). Located in 95 fields within the SDSS QSO footprint, where the choice of survey area prioritized fields having higher than average numbers of bright QSOs and CSC targets. The list of field centres can be found within the target_selection repository.
Simplified description of selection criteria: Select all objects from SDSS DR16 QSO catalogue that have 19.1<sdss_psfmag_i<21.0 AB, and that lie within 1.49 degrees of at least one AQMES-wide2 field location.
Catalogdb tables required: sdss_dr16_qso, sdss_dr16_specobj
Target priority options: 3210
Cadence options: dark_2x4
Implementation: bhm_aqmes.py
Number of targets: 35803
bhm_aqmes_bonus-dark
target_selection plan: 0.1.0
target_selection tag: 0.1.0
Summary: Spectroscopically confirmed SDSS QSOs, with magnitudes in the range appropriate for observations in dark time, selected from the SDSS QSO catalogue (DR16Q, Lyke et al., 2020). Located anywhere within the SDSS DR16Q footprint.
Simplified description of selection criteria: Select all objects from SDSS DR16 QSO catalogue that have 16.5<sdss_psfmag_i<21.5 AB
Catalogdb tables required: sdss_dr16_qso, sdss_dr16_specobj
Target priority options: 3300
Cadence options: dark_spiders_1x4
Implementation: bhm_aqmes.py
Number of targets: 579590
bhm_aqmes_bonus-bright
target_selection plan: 0.1.0
target_selection tag: 0.1.0
Summary: Spectroscopically confirmed SDSS QSOs, with magnitudes in the range appropriate for observations in bright time, selected from the SDSS QSO catalogue (DR16Q, Lyke et al., 2020). Located anywhere within the SDSS DR16Q footprint.
Simplified description of selection criteria: Select all objects from SDSS DR16 QSO catalogue that have 14.0<sdss_psfmag_i<18.0 AB
Catalogdb tables required: sdss_dr16_qso, sdss_dr16_specobj
Target priority options: 4040
Cadence options: bhm_boss_bright_3x1
Implementation: bhm_aqmes.py
Number of targets: 10848
bhm_rm_ancillary
target_selection plan: 0.1.0
target_selection tag: 0.1.0
Summary: A supporting sample of candidate QSOs which have been selected by the Gaia-unWISE AGN catalog (Shu et al., 2019) and/or the SDSS XDQSO catalog (Bovy et al., 2011). These targets are located within five (+1 backup) well known survey fields (SDSS-RM, COSMOS, XMM-LSS, ECDFS, CVZ-S/SEP, and ELIAS-S1).
Simplified description of selection criteria: Starting from a parent catalogue of optically selected objects in the RM fields (as presented by Yang and Shen, 2023), select candidate QSOs that satisfy all of the following: i) are identified via external ancillary methods (photo_bitmask & 3 != 0); ii) have 15<psfmag_i<21.5 AB; iii) do not have significant detections (>3σ) of parallax and/or proper motion in Gaia DR2; iv) are not classified as a STAR in SDSS DR16 spectroscopy; and v) do not lie in the SDSS-RM field
Catalogdb tables required: bhm_rm_v0_2, sdss_dr16_specobj
Target priority options: 1004-1050
Cadence options: bhm_rm_174x8
Implementation: bhm_rm.py
Number of targets: 948
bhm_rm_core
target_selection plan: 0.1.0
target_selection tag: 0.1.0
Summary: A sample of candidate QSOs selected via the methods presented by Yang and Shen (2023). These targets are located within five (+1 backup) well known survey fields (SDSS-RM, COSMOS, XMM-LSS, ECDFS, CVZ-S/SEP, and ELIAS-S1).
Simplified description of selection criteria: Starting from a parent catalogue of optically selected objects in the RM fields (as presented by Yang and Shen, 2023), select candidate QSOs that satisfy all of the following: i) are identified via the Skew-T algorithm (skewt_qso == 1, and skewt_qso_prior == 1 for targets in the CVZ-S/SEP field); ii) have 17<psfmag_i<21.5 AB; iii) do not have significant detections (>3σ) of parallax and/or proper motion in Gaia DR2; iv) are not classified as a STAR in SDSS DR16 spectroscopy; vi) have detections in all of the gri bands (a Gaia detection is sufficient in the CVZ-S/SEP field); and vii) do not lie in the SDSS-RM field
Catalogdb tables required: bhm_rm_v0_2, sdss_dr16_specobj
Target priority options: 1002-1050
Cadence options: bhm_rm_174x8
Implementation: bhm_rm.py
Number of targets:
bhm_rm_var
target_selection plan: 0.1.0
target_selection tag: 0.1.0
Summary: A sample of candidate QSOs selected via their optical variability properties, as presented by Yang and Shen (2023). These targets are located within five (+1 backup) well known survey fields (SDSS-RM, COSMOS, XMM-LSS, ECDFS, CVZ-S/SEP, and ELIAS-S1).
Simplified description of selection criteria: Starting from a parent catalogue of optically selected objects in the RM fields (as presented by Yang and Shen, 2023), select candidate QSOs that satisfy all of the following: i) have significant variability in the DES or PanSTARRS1 multi-epoch photometry (var_sn[g]>3 and var_rms[g]>0.05); ii) have 17<psfmag_i<20.5 AB; iii) do not have significant detections (>3σ) of parallax and/or proper motion in Gaia DR2; iv) are not classified as a STAR in SDSS DR16 spectroscopy; and vi) do not lie in the SDSS-RM field
Catalogdb tables required: bhm_rm_v0_2, sdss_dr16_specobj
Target priority options: 1003-1050
Cadence options: bhm_rm_174x8
Implementation: bhm_rm.py
Number of targets: 992
bhm_rm_known-spec
target_selection plan: 0.1.0
target_selection tag: 0.1.0
Summary: A sample of known QSOs identified through optical spectroscopy from various projects, as collated by Yang and Shen (2023). These targets are located within five (+1 backup) well known survey fields (SDSS-RM, COSMOS, XMM-LSS, ECDFS, CVZ-S/SEP, and ELIAS-S1).
Simplified description of selection criteria: Starting from a parent catalogue of optically selected objects in the RM fields (as presented by Yang and Shen, 2023), select targets which satisfy all of the following: i) are flagged as having a spectroscopic identification in the parent catalogue; ii) have 15<psfmag_i<21.7 AB (SDSS-RM, CDFS, ELIAS-S1, CVZ-S/SEP fields), or 15<psfmag_i<21.5 AB (COSMOS and XMM-LSS fields); iii) have a spectroscopic redshift in the range 0.005<z<7; iv) are not classified as a STAR in SDSS DR16 spectroscopy;
Catalogdb tables required: bhm_rm_v0_2, sdss_dr16_specobj
Target priority options: 1001-1050
Cadence options: bhm_rm_174x8
Implementation: bhm_rm.py
Number of targets: 2992
bhm_csc_apogee
target_selection plan: 0.1.0
target_selection tag: 0.1.0
Summary: X-ray sources from the CSC2.0 source catalogue with NIR counterparts in 2MASS PSC
Simplified description of selection criteria: Starting from the parent catalogue of CSC2.0 sources with optical/IR counterparts (bhm_csc). Select entries satisfying the following criteria: i) counterpart is from the 2MASS catalogue, ii) 2MASS H-band magnitude measurement is in the accepted range for SDSS-V: 10.0<H<15.0.
Catalogdb tables required: bhm_csc
Target priority options: 4000
Cadence options: bhm_csc_apogee_3x1
Implementation: bhm_csc.py
Number of targets: 10633
bhm_csc_boss-dark
target_selection plan: 0.1.0
target_selection tag: 0.1.0
Summary: X-ray sources from the CSC2.0 source catalogue with counterparts in PanSTARRS1-DR1
Simplified description of selection criteria: Starting from the parent catalogue of CSC sources with optical/IR counterparts (bhm_csc). Select entries satisfying the following criteria: i) counterpart is from the PanSTARRS1 catalogue, ii) optical flux/magnitude is in a range suited to SDSS-V dark time observations: 16.0>psfmag_i>22.0 AB .
Catalogdb tables required: bhm_csc
Target priority options: 3000
Cadence options: bhm_csc_boss_1x4
Implementation: bhm_csc.py
Number of targets: 65350
bhm_csc_boss-bright
target_selection plan: 0.1.0
target_selection tag: 0.1.0
Summary: X-ray sources from the CSC2.0 source catalogue with counterparts in PanSTARRS1-DR1
Simplified description of selection criteria: Starting from the parent catalogue of CSC sources with optical/IR counterparts (bhm_csc). Select entries satisfying the following criteria: i) counterpart is from the PanSTARRS1 catalogue, ii) optical flux/magnitude is in a range suited to SDSS-V bright time observations: 13.0>psfmag_i>18.0 AB .
Catalogdb tables required: bhm_csc
Target priority options: 4000
Cadence options: bhm_csc_boss_1x1
Implementation: bhm_csc.py
Number of targets: 22173
bhm_gua_dark
target_selection plan: 0.1.0
target_selection tag: 0.1.0
Summary: A sample of optically faint candidate AGN lacking spectroscopic confirmations, derived from the parent sample presented by Shu et al., (2019), who applied a machine-learning approach to select QSO candidates from a combination of the Gaia DR2 and unWISE catalogues.
Simplified description of selection criteria: Starting with the Shu et al., (2019) catalogue, select targets which satisfy the following criteria: i) have a Random Forest probability of being a QSO of>0.8, ii) are in the (dereddened) magnitude range suitable for BOSS spectroscopy in dark time (Gdered>16.5 and RPdered>16.5, as well as Gdered<21.2 or RPdered<21.0, Vega mag), iii) do not have good quality optical spectroscopic measurements in SDSS DR16
Catalogdb tables required: gaia_unwise_agn, tic_v8, gaia_dr2_source, sdss_dr16_specobj
Target priority options: 3400
Cadence options: bhm_spiders_1x4
Implementation: bhm_gua.py
Number of targets: 2085729
bhm_gua_bright
target_selection plan: 0.1.0
target_selection tag: 0.1.0
Summary: A sample of optically bright candidate AGN lacking spectroscopic confirmations, derived from the parent sample presented by Shu et al., (2019), who applied a machine-learning approach to select QSO candidates from a combination of the Gaia DR2 and unWISE catalogues.
Simplified description of selection criteria: Starting with the Shu et al., (2019) catalogue, select targets which satisfy the following criteria: i) have a Random Forest probability of being a QSO of>0.8, ii) are in the (dereddened) magnitude range suitable for BOSS spectroscopy in bright time (Gdered>13.0 and RPdered>13.5, as well as Gdered<18.5 or RPdered<18.5, Vega mags), iii) do not have good quality optical spectroscopic measurements in SDSS DR16.
Catalogdb tables required: gaia_unwise_agn, tic_v8, gaia_dr2_source, sdss_dr16_specobj
Target priority options: 4040
Cadence options: bhm_boss_bright_3x1
Implementation: bhm_gua.py
Number of targets: 237236
bhm_csc_apogee
target_selection plan: 0.5.0
target_selection tag: 0.3.0
Summary: X-ray sources from the CSC2.0 source catalogue with NIR counterparts in 2MASS PSC
Simplified description of selection criteria: Starting from the parent catalogue of CSC2.0 sources with optical/IR counterparts (bhm_csc). Select entries satisfying the following criteria: i) counterpart is from the 2MASS catalogue, ii) 2MASS H-band magnitude measurement is in the accepted range for SDSS-V: 10.0<H<15.0.
Catalogdb tables required: bhm_csc
Target priority options: 4000
Cadence options: bhm_csc_apogee_3x1
Implementation: bhm_csc.py
Number of targets: 13437
bhm_csc_boss_dark
target_selection plan: 0.5.0
target_selection tag: 0.3.0
Summary: X-ray sources from the CSC2.0 source catalogue with counterparts in PanSTARRS1-DR1
Simplified description of selection criteria: Starting from the parent catalogue of CSC sources with optical/IR counterparts (bhm_csc). Select entries satisfying the following criteria: i) counterpart is from the PanSTARRS1 catalogue, ii) optical flux/magnitude is in a range suited to SDSS-V dark time observations: 16.0>psfmag_i>22.0 AB .
Catalogdb tables required: bhm_csc
Target priority options: 3000
Cadence options: bhm_csc_boss_1x4
Implementation: bhm_csc.py
Number of targets: 65296
bhm_csc_boss_bright
target_selection plan: 0.5.0
target_selection tag: 0.3.0
Summary: X-ray sources from the CSC2.0 source catalogue with counterparts in PanSTARRS1-DR1
Simplified description of selection criteria: Starting from the parent catalogue of CSC sources with optical/IR counterparts (bhm_csc). Select entries satisfying the following criteria: i) counterpart is from the PanSTARRS1 catalogue, ii) optical flux/magnitude is in a range suited to SDSS-V bright time observations: 13.0>psfmag_i>18.0 AB .
Catalogdb tables required: bhm_csc
Target priority options: 4000
Cadence options: bhm_csc_boss_1x1
Implementation: bhm_csc.py
Number of targets: 22146
openfibertargets_nov2020_11
target_selection plan: 0.5.3
target_selection tag: 0.3.3
Summary: Again with the Quasars: Second Epochs for SDSS-I/II Quasars observed only once
Simplified description of selection criteria: Spectroscopically confirmed optically bright SDSS QSOs, selected from the SDSS QSO catalogue (DR16Q, Lyke et al., 2020). The sample is limited to QSOs that have only a single spectrum available in DR16 (NSPEC=0), and that fall inside the magnitude range bounded by Gaia G<19.15 OR sdss_psfmag_i<19.0 and Gaia G>12.5;. Only QSOs with a Gaia counterpart are included.
Catalogdb tables required: manual
Target priority options: 6080
Cadence options: bright_1x1 or dark_1x1 depending on target brightness
Implementation: n/a
Number of targets: 39684
openfibertargets_nov2020_18
target_selection plan: 0.5.3
target_selection tag: 0.3.3
Summary: Hard X-ray sources: hard-band selected X-ray sources (in contrast to soft-band selected eROSITA sources)
Simplified description of selection criteria: The basis for our sample is the publicly available 4XMM-DR9 and Swift 2SXPS source catalogs (Webb et al., 2020; Evans et al., 2020). From both catalogs, we select sources with robust, point-like detections in the relevant energy band (4.5-12 keV or 2-10 keV) and exclude sources lying within the Galactic plane (|b|<20deg) or the area corresponding to the LMC, SMC and M31. Details of the construction of a robust, extragalactic serendipitous X-ray sample are given by Delaney et al. (in prep). We further restrict our sample to sources lying within the footprint of the LegacySurvey8 imaging and identify robust optical counterparts using Nway (Salvato et al., 2018). For our final sample, we apply X-ray flux limits of fx>5e-14 erg/cm2/s for sources in the eROSITA-DE (West Galactic) hemisphere, and a higher limit of fxgt;1e-13 erg/cm2/s in the East Galactic hemisphere. These X-ray limits provide well-defined samples with a high fraction of optically bright counterparts (see Figure 2). Finally, we apply magnitude limits of 15.5<sdss_mag_r<21.5 for our dark-time targets (in the eROSITA-DE sky) and 14.5<sdss_mag_r<20.5 for our bright-time targets.
Catalogdb tables required: manual
Target priority options: 6080
Cadence options: bright_1x1 or dark_1x1 depending on target brightness
Implementation: n/a
Number of targets: 10012
openfibertargets_nov2020_26
target_selection plan: 0.5.3
target_selection tag: 0.3.3
Summary: Quasar Winds: continued monitoring of BAL quasars, already observed in past SDSS surveys.
Simplified description of selection criteria: Our main sample of representative BAL quasars has been drawn from the SDSS Data Release 5 BAL-quasar catalog of Gibson et al. (2009), which contains 5039 BAL quasars spectroscopically identified during SDSS-I/II. From this catalog, we have objectively selected a sample of 2005 BAL quasars that: 1.) Are bright with sdss_mag_i<19.3. We also require i>15 to avoid the possibility of saturation effects (practically, this has minimal effects). Most targets have sdss_mag_i= 17-19.3. 2.) Have high signal-to-noise ratio SDSS-I/II spectra. Specifically, we require the SN1700 parameter from Gibson et al. (2009) to be SN1700>6 when available. 3.) Have clearly detected BAL absorption. Specifically, we require the “balnicity index” from Gibson et al. (2009) to be BI0>100 km/s for at least one BAL trough. This effectively cuts out possible BAL misclassifications owing to, e.g., underlying continuum placement uncertainties. 4.) Have excellent spectral coverage of the CIV, SiIV, MgII, and/or AlIII BAL regions of interest (covering at least outflow velocities of 0 to 25,000 km/s).To accomplish this, we require redshifts of 1.68-4.93 for C IV BALs, 1.96-5.55 for Si IV BALs, 0.48-2.28 for Mg II BALs, and 1.23-3.93 for AlI BALs. If a BAL quasar with troughs from multiple ions satisfies one of these required redshift conditions, then it is accepted.
Catalogdb tables required: manual
Target priority options: 6080
Cadence options: dark_1x1
Implementation: n/a
Number of targets: 2105
openfibertargets_nov2020_27
target_selection plan: 0.5.3
target_selection tag: 0.3.3
Summary: ASQOSS: All Bright Quasars: all QSO candidates with WISE-colors & optical information.
Simplified description of selection criteria: ASQOSS is based on a sophisticated target selection approach designed to yield the largest possible sample of quasars, across the entire sky, primarily based on optical-IR photometry (Yang et al., 2017, Shu et al., 2019, Yang et al., 2023). It includes many (c.122k or 29%, at Gaia G<19.5) previously known quasars (i.e., with optical spectroscopy) but is dominated by quasar candidates – targets for which our selection algorithm has yielded a high probability of being quasars. The selection procedure includes the following considerations and criteria: i) Quasar-like colors, All sky: Optical+MIR photometry using Gaia and unWISE (W1+W2); Southern hemisphere: additional selection based on optical (DES grizy), and NIR (VISTA VHS+Viking, 2MASS-JHK) colors, ii) Additional variability-based selection (from multi-epoch DES imaging), iii) All targets are robustly detected by Gaia with no proper motion is measured. In addition, the high-extinction regions near the Galactic plane, with E(B-V)>2, as well as the Magellanic clouds and M31 are excluded.
Catalogdb tables required: manual
Target priority options: 6085
Cadence options: bright_1x1 or dark_1x1 depending on target brightness
Implementation: n/a
Number of targets: 814963
openfibertargets_nov2020_30
target_selection plan: 0.5.3
target_selection tag: 0.3.3
Summary: JWST North Ecliptic Pole time-domain field: Spectra of all bright objects in a field that will also be observed by Chandra and many other facilities.
Simplified description of selection criteria: This sample covers all Pan-STARRS1 objects with 13<g<20 and a maximum separation of 12 arcmin from (RA,Dec)=(17:22:44.35, +65:49:18.05)
Catalogdb tables required: manual
Target priority options: 6080
Cadence options: dark_1x1
Implementation: n/a
Number of targets: 237
openfibertargets_nov2020_33
target_selection plan: 0.5.3
target_selection tag: 0.3.3
Summary: Variability-Selected AGN and Blazars: Confirmation and Characterization of Variability-Selected AGN, QSOs, and Blazars (objects without previous spectra)
Simplified description of selection criteria: Our parent sample comprises all ZTF objects with an AGN, QSO or blazar predicted label, that do not have a previous spectrum or AGN/QSO classification in a public catalog. We further restrict the sample with a magnitude limit in g < 19.5 for sources in the Eastern Galactic hemisphere and g < 20.5 for sources in the eROSITA-DE (Western Galactic hemisphere) to comply with a minimum S/N ratio of 3 on the continuum, for the respective bright and dark time conditions. We note that the majority of our ‘eROSITA-DE’ candidates have g<19.5 and thus could also be observed in bright time.
Catalogdb tables required: manual
Target priority options: 6080
Cadence options: bright_1x1 or dark_1x1 depending on target brightness
Implementation: n/a
Number of targets: 22250