|
| | | | |
| | | |
| Stat |
Members: 3645
Articles: 2'504'928
Articles rated: 2609
25 April 2024 |
|
| | | | |
|
Article overview
| |
|
|
The Two-Point Correlation Function at Redshift 1/3 | | C. W. Shepherd
; R. G. Carlberg
; H. K. C. Yee
; E. Ellingson
; | | Date: |
4 Dec 1995 | | Subject: | astro-ph | | Affiliation: | University of Toronto), E. Ellingson (University of Colorado | | Abstract: | We present the results of a study of the two-point correlation function for a sample of field galaxies taken from the CNOCI cluster survey. The sample consists of 144 galaxies within a contiguous region of space subtending 225 square arcminutes. The objects have r-band magnitudes 17.0 < r < 21.7 and redshifts 0.21 < z < 0.53. The median redshift of the sample is 0.36. The real space correlation function is found to be consistent with a power law xi(r) = (r/r_0)^-1.7 with r_0 = 2.1 +0.6/-0.3 (Omega_0=1), or r_0 = 2.5 +0.7/-0.4 (Omega_0=0.2). Uncertainties are estimated using the bias-corrected bootstrap resampling method, with 300 resamplings. This low correlation length implies strong evolution since z~0.36 has occurred in either the correlation function or the luminosity function; if the observed correlation function is modeled as xi(r,z) = xi(r,0) * (1+z)^-(3+epsilon) with xi(r,0) = (r/5.1 h^-1Mpc)^-1.7, then epsilon = 0.8 +1.0/-1.3. Comparison of the redshift space and real space correlation function indicates that the one-dimensional pairwise peculiar velocity dispersion sigma at z~0.36 is weakly inconsistent with 770 km s^-1, the value predicted by the Cosmic Virial Theorem if Omega_0=1. The observed correlation function is, however, consistent with sigma=400 km s^-1, the value expected if Omega_0=0.2. | | Source: | arXiv, astro-ph/9601014 | | Services: | Forum | Review | PDF | Favorites | |
|
|
No review found.
Did you like this article?
Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.
browser Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
|
| |
|
|
|
|
News, job offers and information for researchers and scientists:
| |
REGISTER