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.

Wisconsin PCA-based Stellar Masses and Velocity Dispersions

Scientific Analysis Catalog

Galaxy properties based on principal component analysis from the Wisconsin group for BOSS galaxies.

Yan-Mei Chen, Guinevere Kauffmann, Christy A. Tremonti, Simon White, Timothy M. Heckman, Katarina Kovač, Kevin Bundy, John Chisholm, Claudia Maraston, Donald P. Schneider, Adam S. Bolton, Benjamin A. Weaver, Jon Brinkmann

Catalog Data

This dataset appears in DR12 SkyServer and CasJobs in the following tables:


Wisconsin stellar masses and velocity dispersions are derived from the optical rest-frame spectral region (3700-5500 Ångstroms) using a principal component analysis (PCA) method (Chen et al. 2012). The estimation is based on a library of model spectra generated using the single stellar population models of Bruzal & Charlot (2003) and Maraston & Strömbäck (2011), and with a broad range of star-formation histories, metallicities, dust extinctions, and stellar velocity dispersions.

Catalog last modified: 2021-12-06 07:36:54

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