  We present RCSED, the value-added Reference Catalog of Spectral Energy
Distributions of galaxies, which contains homogenized spectrophotometric data
for 800,299 low and intermediate redshift galaxies (0.007<z<0.6) selected from
the Sloan Digital Sky Survey spectroscopic sample. Accessible from the Virtual
Observatory (VO) and complemented with detailed information on galaxy
properties obtained with the state-of-the-art data analysis, RCSED enables
direct studies of galaxy formation and evolution during the last 5Gyr. We
provide tabulated color transformations for galaxies of different morphologies
and luminosities and analytic expressions for the red sequence shape in
different colors. RCSED comprises integrated k-corrected photometry in up-to 11
ultraviolet, optical, and near-infrared bands published by the GALEX, SDSS, and
UKIDSS wide-field imaging surveys; results of the stellar population fitting of
SDSS spectra including best-fitting templates, velocity dispersions,
parameterized star formation histories, and stellar metallicities computed for
instantaneous starburst and exponentially declining star formation models;
parametric and non-parametric emission line fluxes and profiles; and gas phase
metallicities. We link RCSED to the Galaxy Zoo morphological classification and
galaxy bulge+disk decomposition results by Simard et al. We construct the
color-magnitude, Faber-Jackson, mass-metallicity relations, compare them with
the literature and discuss systematic errors of galaxy properties presented in
our catalog. RCSED is accessible from the project web-site and via VO simple
spectrum access and table access services using VO compliant applications. We
describe several SQL query examples against the database. Finally, we briefly
discuss existing and future scientific applications of RCSED and prospectives
for the catalog extension to higher redshifts and different wavelengths.
