The Overdensities of Galaxy Environments as a Function of Luminosity and Color

By David W. Hogg, M. Blanton, Daniel J. Eisenstein, James E. Gunn, David Schlegel, Idit Zehavi, N. Bahcall, J. Brinkmann, István Csabai, D. Schneider and 2 more. 2002

259 citations recorded by the source corpus.

We study the mean environments of galaxies in the Sloan Digital Sky Survey (SDSS) as a function of rest-frame luminosity and color. Overdensities in galaxy number are estimated in 8 and 1 h-1 Mpc spheres centered on 115,000 galaxies taken from the SDSS spectroscopic sample. We find that, at constant color, overdensity is independent of luminosity for galaxies with the blue colors of spirals. This suggests that at fixed star formation history, spiral-galaxy mass is a very weak function of environment. 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.

Subfields: Astronomy and Astrophysics, Instrumentation

View Paper: https://www.semanticscholar.org/paper/841dbd1bda349be3181e962f77f687eef5ce2d48

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Astronomy and Astrophysics

  1. L. Hernquist
  2. P. Hopkins
  3. C. Conroy
  4. Simon D. M. White
  5. F. V. D. Bosch
  6. Volker Springel
  7. R. Dav'e
  8. R. Somerville

In Instrumentation

  1. C. Conroy
  2. L. Hernquist
  3. P. Hopkins
  4. Simon D. M. White
  5. F. V. D. Bosch
  6. Risa Wechsler
  7. M. Blanton
  8. Volker Springel

Citations in the corpus