The Galaxy Color-Magnitude Diagram in the Local Universe from GALEX and SDSS Data

Details The Galaxy Color-Magnitude Diagram in the Local Universe from GALEX and SDSS Data The Galaxy Color-Magnitude Diagram in the Local Universe from GALEX and SDSS Data

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aas...207.5203w&link_type=abstract

American Astronomical Society Meeting 207, #52.03; Bulletin of the American Astronomical Society, Vol. 37, p.1235

Astronomy and Astrophysics

Astronomy

1

Scientific paper

We present the relative density of galaxies in the local universe as a function of their r-band absolute magnitudes and ultraviolet minus r-band colors. The Sloan Digital Sky Survey (SDSS) main galaxy sample selected in the r-band was matched with a sample of galaxies from the Galaxy Evolution Explorer (GALEX) Medium Imaging Survey in both the far-UV (FUV) and near-UV (NUV) bands. Simlar to previous optical studies, the distribution of galaxies in (FUV-r) and (NUV-r) is bimodal with well-defined blue and red sequences. We compare the distribution of galaxies in these colors with both the D4000 index measured from the SDSS spectra as well as the SDSS (u-r) color.

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