|
| | | | |
| | | |
| Stat |
Members: 3645
Articles: 2'504'928
Articles rated: 2609
26 April 2024 |
|
| | | | |
|
Article overview
| |
|
|
The Alignment Effect of Brightest Cluster Galaxies in the SDSS | | Rita S. J. Kim
; Jim Annis
; Michael A. Strauss
; Robert H. Lupton
; Neta A. Bahcall
; James E. Gunn
; Jeremy V. Kepner
; Marc Postman
; for the SDSS collaboration
; | | Date: |
16 Oct 2001 | | Journal: | ASP Conf.Ser. 268 (2002) 393 | | Subject: | astro-ph | | Affiliation: | 1 and 2), Jim Annis , Michael A. Strauss , Robert H. Lupton , Neta A. Bahcall , James E. Gunn , Jeremy V. Kepner (1 and 4) and Marc Postman , for the SDSS collaboration ( Princeton, Johns Hopkins Fermilab, MIT Lincoln Lab, STSCI | | Abstract: | One of the most vital observational clues for unraveling the origin of Brightest Cluster Galaxies (BCG) is the observed alignment of the BCGs with their host cluster and its surroundings. We have examined the BCG-cluster alignment effect, using clusters of galaxies detected from the Sloan Digital Sky Survey (SDSS). We find that the BCGs are preferentially aligned with the principal axis of their hosts, to a much higher redshift (z >~ 0.3) than probed by previous studies (z <~ 0.1). The alignment effect strongly depends on the magnitude difference of the BCG and the second and third brightest cluster members: we find a strong alignment effect for the dominant BCGs, while less dominant BCGs do not show any departure from random alignment with respect to the cluster. We therefore claim that the alignment process originates from the same process that makes the BCG grow dominant, be it direct mergers in the early stage of cluster formation, or a later process that resembles the galactic cannibalism scenario. We do not find strong evidence for (or against) redshift evolution between 0 | | Source: | arXiv, astro-ph/0110383 | | 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