The cross-correlation between galaxies of different luminosities and Colors

Astronomy and Astrophysics – Astrophysics

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

25 pages, 18 figures, Accepted for publication in ApJ

Scientific paper

10.1086/519245

We study the cross-correlation between galaxies of different luminosities and colors, using a sample selected from the SDSS Dr 4. Galaxies are divided into 6 samples according to luminosity, and each of these samples is divided into red and blue subsamples. Projected auto-correlation and cross-correlation is estimated for these subsample. At projected separations r_p > 1\mpch, all correlation functions are roughly parallel, although the correlation amplitude depends systematically on luminosity and color. On r_p < 1\mpch, the auto- and cross-correlation functions of red galaxies are significantly enhanced relative to the corresponding power laws obtained on larger scales. Such enhancement is absent for blue galaxies and in the cross-correlation between red and blue galaxies. We esimate the relative bias factor on scales r > 1\mpch for each subsample using its auto-correlation function and cross-correlation functions. The relative bias factors obtained from different methods are similar. For blue galaxies the luminosity-dependence of the relative bias is strong over the luminosity range probed (-23.0

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

The cross-correlation between galaxies of different luminosities and Colors does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The cross-correlation between galaxies of different luminosities and Colors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The cross-correlation between galaxies of different luminosities and Colors will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-285213

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.