The overdensities of galaxy environments as a function of luminosity and color

Details The overdensities of galaxy environments as a function of luminosity and color The overdensities of galaxy environments as a function of luminosity and color

Dec 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aas...20114804h&link_type=abstract

American Astronomical Society Meeting 201, #148.04; Bulletin of the American Astronomical Society, Vol. 35, p.574

Astronomy and Astrophysics

Astronomy

Scientific paper

We study the average environments of galaxies in the Sloan Digital Sky Survey as a function of rest-frame luminosity and color. Overdensities in galaxy number are estimated in 8 h-1 {Mpc} and 1 h-1 {Mpc} spheres centered on 120,000 galaxies taken from the SDSS spectroscopic sample. We find that overdensity is independent of luminosity for galaxies with the blue colors of spirals. Overdensity does depend on luminosity for galaxies with the red colors of early types; both low-luminosity and high-luminosity red galaxies are found to be in highly overdense regions. The implications for galaxy evolution are discussed.

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