In addition to the primary SDSS photometry and spectroscopy, there are a few extra catalogs created by our collaborators that are distributed through the SAS. These Value-Added Catalogs (VACs) are listed below, and include catalogs that were released in earlier data releases.
StarHorse stellar parameters, distances, and extinctions for APOGEE DR19 Red Giants
Distances, extinctions, and stellar parameters for APOGEE DR19 giant stars, derived using the StarHorse code and input from Gaia, Pan-STARRS1, 2MASS, and AllWISE
Catalog Data
Abstract
This VAC contains spectro-photo-astrometric distances, extinctions, and stellar parameters such as temperature, masses and metallicity for giant stars with SDSS-V DR19 APOGEE spectroscopy using the StarHorse code (Queiroz et al. 2018, Queiroz et al. 2023). Parameters are estimated for each unique sdss_id in the data release, provided the StarHorse code successfully converges. If a star has multiple sdss_ids, the ASPCAP results with the highest signal-to-noise ratio (snr) are used. For each star, StarHorse computes the joint posterior probability distribution function (PDF) over a grid of PARSEC 1.2S stellar models, using input values including ASPCAP-derived effective temperature, surface gravity, metallicity, and alpha-element abundance, as well as Gaia DR3 parallaxes (when available), and multi-band photometry from Pan-STARRS1, 2MASS, and AllWISE. ASPCAP effective temperature and surface gravity are calibrated before input to StarHorse. Calibration details are described in the SDSS DR19 main publication. The VAC includes median values of marginalized PDFs for mass, temperature, surface gravity, metallicity, distance, and extinction. The StarHorse_INPUTFLAGS column indicates the input data used, while StarHorse_OUTFLAGS flags possibly uncertain outputs. Calibrated temperature and surface gravity are also included. This VAC contains stars observed with SDSS-V MWM, as well as a subset of stars observed with SDSS-IV APOGEE-2. Previous StarHorse VACs based on DR17 and DR16 are still available, and can be found here.
Catalog last modified: 2025-07-10 11:47:15