DECaPS Stellar Inference

DECaPS Stellar Inference Constraints on the distances, extinctions, and stellar types for 709 million stars used in the construction of the DECaPS 3D dust map from Zucker, Saydjari, and Speagle et al. 2025. For those not needing the full stellar sample, this catalog is also available to query via NOIRLab’s AstroDataLab and accessible via TAP-accessible clients, including the astroquery Python package (see decaps dr2.stellar inference). Identifiers decaps_id: Unique DECaPS2 object ID from Saydjari et al. 2023 gaia_id: Gaia DR3 ID Astrometric Data parallax: Gaia DR3 parallax in mas parallax_error: Gaia DR3 parallax error in mas ra: Right Ascension from DECaPS2 in deg dec: Declination from DECaPS2 in deg Photometric Data decaps_fracflux (x5): Fraction of flux in this object's PSF that comes from this object in each DECaPS band mag (x13): Magnitudes from DECaPS2 (grizY), VVV (JHK), 2MASS (JHK), and unWISE (W1, W2) in mag magerr (x13): Magnitude errors from DECaPS2, VVV, 2MASS, and unWISE in mag Samples and χ² chi2: Best-fit χ² value from models used in the fit samps_dist (x5): Five random samples of distance in kpc samps_extinction (x5): Five random samples of AV in mag samps_rv (x5): Five random samples of RV samps_models (x5): Five random samples of the model index for accessing the input parameter grid (grid_mist_v10.h5) Percentile Data dist (x5): 2.5th, 16th, 50th, 84th, 97.5th percentiles of the samples distance in kpc rv (x5): 2.5th, 16th, 50th, 84th, 97.5th percentiles of the samples in RV eep (x5): 2.5th, 16th, 50th, 84th, 97.5th percentiles of the samples in MIST EEP feh (x5): 2.5th, 16th, 50th, 84th, 97.5th percentiles of the samples FeH loga (x5): 2.5th, 16th, 50th, 84th, 97.5th percentiles of the samples log age in years logg (x5): 2.5th, 16th, 50th, 84th, 97.5th percentiles of the samples in surface gravity logl (x5): 2.5th, 16th, 50th, 84th, 97.5th percentiles of the samples in log Lbol in L⊙ logt (x5): 2.5th, 16th, 50th, 84th, 97.5th percentiles of the samples in log Teff in K mini (x5): 2.5th, 16th, 50th, 84th, 97.5th percentiles of the samples in initial mass in M⊙ extinction (x5): 2.5th, 16th, 50th, 84th, 97.5th percentiles of the samples in AV in mag