Brightest cluster galaxies and dry mergers

被引：0
|
作者：
Deng, Z. G. [1 ]
Liu, F. S. [2 ]
Xia, X. Y. [3 ]
Mao, S. [4 ]
机构：
[1] Grad Univ, CAS, A19 Yu Quan Lu, Beijing 100049, Peoples R China
[2] Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
[3] Tianjin Normal Univ, Dept Phys, Tianjin 300074, Peoples R China
[4] Univ Manchester, Jodrell Bank Observ, Macclesfield, Cheshire SKI 1 9DL, England
来源：
RELATIVISTIC ASTROPHYSICS | 2008年 / 966卷
关键词：
galaxies : cD; galaxies : cluster of galaxies; galaxies : merger; galaxies : photometry;
D O I：
暂无
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Photometric properties of the early type Brightest Cluster Galaxies (BCGs) has been investigated for a sample of 85 BCGs with redshifts less than 0.1 selected from the C4 cluster catalogue. The results are compared to those obtained from a sample of elliptical galaxies chosen with similar apparent magnitude and redshift ranges. We find that BCGs have steeper size-luminosity (R proportional to L-alpha) and Faber-Jackson (L proportional to sigma(beta)) relations than the bulk of early type galaxies. The differences in the scaling relations suggest that the dynamical structure and formation route of BCGs may be different from the bulk of early type galaxies, in particular dry (dissipationless) mergers may play a more important role in their formation.
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页码：62 / +
页数：2
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