Major Dry-Merger Rate and Extremely Massive Dry-Mergers of BCGs

被引：0

作者：

Liu, F. S. ^{[1
]}

Deng, Z. G. ^{[3
]}

Xia, X. Y. ^{[2
]}

机构：

[1] Shenyang Normal Univ, Coll Phys Sci & Technol, Shenyang 110034, Peoples R China

[2] Tianjin Normal Univ, Dept Phys, Tianjin, Peoples R China

[3] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China

来源：

RELATIVISTIC ASTROPHYSICS | 2008年 / 1059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：

Possible ongoing dry merger pairs of the early type Brightest Cluster Galaxies (BCGs) have been searched from a sample of 515 BCGs with redshifts between 0.03 to 0.12 selected from the C4 cluster catalogue. The results are compared with those of GEMS (Galaxy Evolution from Morphology and SEDs Survey) [1]. We find that BCGs have much higher ongoing merger fraction than that of luminous early-type galaxies from GEMS. This may infer that BCGs have higher dry-merger rate. We also found the trendence that the BCGs in richer clusters tend to have higher merger fraction than that in poorer clusters. With careful inspection, we find that extremely massive major dry mergers do exist in the BCGs sample which shows that they are not rare locally and may have important implication on the evolution of BCGs.

引用

页码：113 / +

页数：2

共 11 条

[1] Dry mergers in gems:: The dynamical evolution of massive early-type galaxies [J].

Bell, EF ;

Naab, T ;

McIntosh, DH ;

Somerville, RS ;

Caldwell, JAR ;

Barden, M ;

Wolf, C ;

Rix, HW ;

Beckwith, SV ;

Borch, A ;

Häussler, B ;

Heymans, C ;

Jahnke, K ;

Jogee, S ;

Koposov, S ;

Meisenheimer, K ;

Peng, CY ;

Sanchez, SF ;

Wisotzki, L .

ASTROPHYSICAL JOURNAL, 2006, 640 (01) :241-251

[2] The hierarchical formation of the brightest cluster galaxies [J].

De Lucia, Gabriella ;

Blaizot, Jeremy .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2007, 375 (01) :2-14

[3] Early formation and late merging of the giant galaxies [J].

Gao, L ;

Loeb, A ;

Peebles, PJE ;

White, SDM ;

Jenkins, A .

ASTROPHYSICAL JOURNAL, 2004, 614 (01) :17-25

[4]

KITZBICHLER MG, 2008, ARXIV08041965

[5] Photometric properties and scaling relations of early-type Brightest Cluster Galaxies [J].

Liu, F. S. ;

Xia, X. Y. ;

Mao, Shude ;

Wul, Hong ;

Deng, Z. G. .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2008, 385 (01) :23-39

[6] Merger rate of equal-mass spherical galaxies [J].

Makino, J ;

Hut, P .

ASTROPHYSICAL JOURNAL, 1997, 481 (01) :83-94

[7] The C4 clustering algorithm: clusters of galaxies in the Sloan Digital Sky Survey [J].

Miller, CJ ;

Nichol, RC ;

Reichart, D ;

Wechsler, RH ;

Evrard, AE ;

Annis, J ;

McKay, TA ;

Bahcall, NA ;

Bernardi, M ;

Boehringer, H ;

Connolly, AJ ;

Goto, T ;

Kniazev, A ;

Lamb, D ;

Postman, M ;

Schneider, DP ;

Sheth, RK ;

Voges, W .

ASTRONOMICAL JOURNAL, 2005, 130 (03) :968-1001

[8] An extremely massive dry galaxy merger in a moderate redshift cluster [J].

Rines, Kenneth ;

Finn, Rose ;

Vikhlinin, Alexey .

ASTROPHYSICAL JOURNAL, 2007, 665 (01) :L9-L13

[9] Spectroscopic confirmation of multiple red galaxy-galaxy mergers in MS 1054-03 (z = 0.83) [J].

Tran, KVH ;

van Dokkum, P ;

Franx, M ;

Illingworth, GD ;

Kelson, DD ;

Schreiber, NMF .

ASTROPHYSICAL JOURNAL, 2005, 627 (01) :L25-L28

[10] The recent and continuing assembly of field elliptical galaxies by red mergers [J].

van Dokkum, PG .

ASTRONOMICAL JOURNAL, 2005, 130 (06) :2647-2665

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