NAOC Open IR  > 星系宇宙学研究部
DISTRIBUTION OF SATELLITE GALAXIES IN HIGH-REDSHIFT GROUPS
Wang, Yougang1; Park, Changbom2; Hwang, Ho Seong2,3; Chen, Xuelei1,4
2010-08-01
Source PublicationASTROPHYSICAL JOURNAL
Volume718Issue:2Pages:762-767
AbstractWe use galaxy groups at redshifts between 0.4 and 1.0 selected from the Great Observatories Origins Deep Survey to study the color-morphological properties of satellite galaxies and investigate possible alignment between the distribution of the satellites and the orientation of their central galaxy. We confirm the bimodal color and morphological-type distribution for satellite galaxies at this redshift range: the red and blue classes correspond to the early and late morphological types, respectively, and the early-type satellites are on average brighter than the late-type ones. Furthermore, there is a morphological conformity between the central and satellite galaxies: the fraction of early-type satellites in groups with an early-type central is higher than those with a late-type central galaxy. This effect is stronger at smaller separations from the central galaxy. We find a marginally significant signal of alignment between the major axis of the early-type central galaxy and its satellite system, while for the late-type centrals no significant alignment signal is found. We discuss the alignment signal in the context of shape evolution of groups.
KeywordDark Matter Galaxies: Halos Galaxies: Structure Large-scale Structure Of Universe Methods: Statistical
DOI10.1088/0004-637X/718/2/762
Indexed BySCI
Language英语
WOS IDWOS:000279976200015
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/7704
Collection星系宇宙学研究部
Affiliation1.Chinese Acad Sci, Natl Astron Observ, Key Lab Opt Astron, Beijing 100012, Peoples R China
2.Korea Inst Adv Study, Sch Phys, Seoul 130722, South Korea
3.CEA Saclay, Serv Astrophys, F-91191 Gif Sur Yvette, France
4.Peking Univ, Ctr High Energy Phys, Beijing 100871, Peoples R China
Recommended Citation
GB/T 7714
Wang, Yougang,Park, Changbom,Hwang, Ho Seong,et al. DISTRIBUTION OF SATELLITE GALAXIES IN HIGH-REDSHIFT GROUPS[J]. ASTROPHYSICAL JOURNAL,2010,718(2):762-767.
APA Wang, Yougang,Park, Changbom,Hwang, Ho Seong,&Chen, Xuelei.(2010).DISTRIBUTION OF SATELLITE GALAXIES IN HIGH-REDSHIFT GROUPS.ASTROPHYSICAL JOURNAL,718(2),762-767.
MLA Wang, Yougang,et al."DISTRIBUTION OF SATELLITE GALAXIES IN HIGH-REDSHIFT GROUPS".ASTROPHYSICAL JOURNAL 718.2(2010):762-767.
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