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Dwarf galaxy populations in present-day galaxy clusters - I. Abundances and red fractions
Weinmann, Simone M.1; Lisker, Thorsten2; Guo, Qi3,4; Meyer, Hagen T.2; Janz, Joachim2,5
2011-09-01
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume416Issue:2Pages:1197-1214
AbstractWe compare the galaxy population in the Virgo, Fornax, Coma and Perseus cluster to a state-of-the-art semi-analytic model, focusing on the regime of dwarf galaxies with luminosities from approximately 10(8) to 10(9) L-circle dot. We find that the number density profiles of dwarfs in observed clusters are reproduced reasonably well, and that the red fractions of model clusters provide a good match to Coma and Perseus. On the other hand, the red fraction among dwarf galaxies in Virgo is clearly lower than in model clusters. We argue that this is mainly caused by the treatment of environmental effects in the model. This explanation is supported by our finding that the colours of central ('field') dwarf galaxies are reproduced well, in contrast to previous claims. Finally, we find that the dwarf-to-giant ratio in model clusters is too high. This may indicate that the current model prescription for tidal disruption of faint galaxies is still not efficient enough.
KeywordGalaxies: Abundances Galaxies: Clusters: General Galaxies: Dwarf Galaxies: Evolution Galaxies: Statistics
DOI10.1111/j.1365-2966.2011.19118.x
Indexed BySCI
Language英语
WOS IDWOS:000295119900031
Citation statistics
Cited Times:53[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/7934
Collection星系宇宙学研究部
Affiliation1.Leiden Univ, Leiden Observ, NL-2300 RA Leiden, Netherlands
2.Univ Heidelberg, Astron Rechen Inst, Zentrum Astron, D-69120 Heidelberg, Germany
3.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
4.Univ Durham, Inst Computat Cosmol, Dept Phys, Durham DH1 3LE, England
5.Univ Oulu, Div Astron, Dept Phys Sci, FIN-90014 Oulu, Finland
Recommended Citation
GB/T 7714
Weinmann, Simone M.,Lisker, Thorsten,Guo, Qi,et al. Dwarf galaxy populations in present-day galaxy clusters - I. Abundances and red fractions[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2011,416(2):1197-1214.
APA Weinmann, Simone M.,Lisker, Thorsten,Guo, Qi,Meyer, Hagen T.,&Janz, Joachim.(2011).Dwarf galaxy populations in present-day galaxy clusters - I. Abundances and red fractions.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,416(2),1197-1214.
MLA Weinmann, Simone M.,et al."Dwarf galaxy populations in present-day galaxy clusters - I. Abundances and red fractions".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 416.2(2011):1197-1214.
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