Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aas...20110002l&link_type=abstract
American Astronomical Society, 201st AAS Meeting, #100.02; Bulletin of the American Astronomical Society, Vol. 34, p.1268
Astronomy and Astrophysics
Astronomy
Scientific paper
We measure the luminosity function of Luminous Red Galaxy(LRG) from SDSS Data Release One (DR1). The sample of approximately 10,000 galaxies span redshifts between 0.1 to 0.45. Using a maximum likelihood method that takes into account the LRG selection color and flux cuts, we compute a joint color-luminosity function that incorporates both luminosity and density evolution. By looking at galaxy overdensity along the color-magnitude relation of elliptical galaxies, we select a subsample of Brightest Cluster Galaxies(BCG) from the LRGs. We estimate the dominance function of the BCG by the magnitude difference between the BCG and the second brightest, and explore the function's evolution with redshift and its dependence on cluster overdensity. We comment on its implications on the various formation scenerio of Brightest Cluster Galaxies.
Blanton Michael R.
Eisenstien D. J.
Loh Yeong-Shang
Strauss Michael A.
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