The goal of the Planet Host program is to create a uniform catalog of stellar characteristics and elemental abundances derived from APOGEE spectra of planet hosting stars. The program was originally conceived as a follow-up program for the Transiting Exoplanet Survey Satellite (TESS) mission, targeting all stars from the TESS mission with light curves taken with the 2-minute cadence during the nominal 2-year mission, with priority given to those 2-min cadence stars that host TESS Objects of Interest (TOIs) or Community TOIs (CTOIs) are given higher priority. This dataset would thus allow robust comparisons of stellar characteristics between stars with and without TOIs.
The Planet Host program was later expanded to include all known planet hosts (excluding those discovered with microlensing or pulsar timing techniques) not already observed with the APOGEE instrument. Altogether, the program will produce for the first time in the exoplanet subfield a large, homogeneous sample of fundamental and photospheric stellar parameters and individual elemental abundances. The selection criteria of the expanded sample will be available in a future data release.
Cartons
mwm_tess_planet
Targets are drawn from a catalog of 2-min, TOI, and CTOI targets. Thus, the selected stars have a profile similar to those in the TESS Input Catalog (TIC, Stassun et al. 2019). The 2-min targets came from sectors 1 through 32 which were downloaded from https://tess.mit.edu/observations/target-lists/ on 11/24/2020. The TOI targets come from two sources. The first source was the MIT website (https://tess.mit.edu/toi-releases/) and included data from sectors 1 through 29. It was also downloaded on 11/24/2020. The second source was the Exoplanet Follow-up Observing Program (ExoFOP) website (https://exofop.ipac.caltech.edu/tess/index.php), which was also downloaded on 11/24/2020 and included sectors 1 through 21. The CTOI candidates also come from the ExoFOP website.
With the addition of 2MASS H-band magnitudes, the full selection criteria are:
- Candidate in 2-min, TOI, CTOI catalogs described above
- 7 < H < 12
mwm_planet_tess
This is the plate-era name of the mwm_tess_planet carton. Both cartons share the same program name, mwm_planet. Like the mwm_tess_planet carton, targets are drawn from a catalog of 2-min, TOI, and CTOI targets. Thus, the selected stars have a profile similar to those in the TESS Input Catalog (TIC, Stassun et al. 2019). The 2-min targets came from sectors 1 through 23 which were downloaded from https://tess.mit.edu/observations/target-lists/ on 04/02/2020. The TOI targets come from two sources. The first source was the MIT website (https://tess.mit.edu/toi-releases/) and included data from sectors 1 through 21. It was also downloaded on 04/02/2020. The second source was the Exoplanet Follow-up Observing Program (ExoFOP) website (https://exofop.ipac.caltech.edu/tess/index.php), which was also downloaded on 04/02/2020 and included sectors 1 through 21. The CTOI candidates also come from the ExoFOP website.
Cadences
During plate operations, these targets could be observed on any plate except those with the RM cadence.
In the FPS era, targets are assigned a cadence based on their H magnitude to achieve a signal-to-noise of at least 80.
![\[ N = \frac{60 min}{15 min} \times (80^2 / 100^2) \times 10^{(0.4 \times (Hmag-11)} \]](https://quicklatex.com/cache3/cb/ql_927fd0636966ad2ead230e0e588226cb_l3.png "Rendered by QuickLaTeX.com")
Number of exposures = 
rounded to the nearest integer.
Between 1 and 6 exposures is needed per epoch to achieve the requisite S/N, so the full list of cadences is:
- bright_1x1
- bright_1x2
- bright_1x3
- bright_1x4
- bright_1x5
- bright_1x6