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.
MPA-JHU Stellar Masses
Galaxy properties of DR8 spectra, based on Galspec by MPA-JHU.
The Max Planck for Astrophysics (MPA) and Johns Hopkins University (JHU) groups provide galaxy properties for all DR8 galaxy spectra, using the Galspec product, based on the methods of Brinchmann et al. (2004), Kauffmann et al. (2003), and Tremonti et al. (2004). The catalog includes emission lines and derived galaxy parameters, such as BPT (Baldwin, Phillips & Terlevich) properties, stellar mass, nebular oxygen abundance, and (specific) star formation rate. This catalog was deprecated in DR12 in favor of the Wisconsin, Portsmouth, and Granada team analyses of the same data, but are provided for comparison with the other galaxy property measurements listed here.
Catalog last modified: 2021-12-06 07:36:54