Value Added Catalogs

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.

DistMass: Distances, masses, and ages for APOGEE DR17

Scientific Analysis Catalog

Parameter based distances and masses for APOGEE DR17 stars, using simple neural networks

Alexander Stone-Martinez, Jon Holtzman


This value-added catalog presents distances and masses of stars in APOGEE DR17, derived with simple neural networks. Distances are trained from stellar parameters using GAIA EDR3 distances and literature distances for star clusters. Training data for distances comes from Gaia EDR3, supplemented by literature distances for star clusters. For masses, the network is trained using asteroseismic masses for evolved stars and isochrone masses for main sequence stars. The models are trained on effective temperature, surface gravity, metallicity and carbon and nitrogen abundances. DistMass contains distances and masses for 733,901 independent spectra, plus ages for 396,548 evolved stars. More details on this catalog can be found in Stone-Martinez et al. (2024).

Catalog last modified: 2024-02-27 12:26:38

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