Superclusters of galaxies in the 2dF redshift survey -: III.: The properties of galaxies in superclusters

被引:41
作者
Einasto, M. [1 ]
Einasto, J.
Tago, E.
Saar, E.
Liivamagi, L. J.
Joeveer, M.
Hutsi, G.
Heinamaki, P.
Mueller, V.
Tucker, D.
机构
[1] Tartu Observ, EE-61602 Toravere, Estonia
[2] Tuorla Observ, Piikkio, Finland
[3] Astrophys Inst Potsdam, D-14482 Potsdam, Germany
[4] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA
关键词
cosmology : large; scale structure of Universe; galaxies : clusters : general;
D O I
10.1051/0004-6361:20066456
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Context. Superclusters are the largest systems in the Universe to give us information about the very early Universe. Our present series of papers is devoted to the study of the properties of superclusters of galaxies from the 2dF Galaxy Redshift survey. Aims. We use catalogues of superclusters of galaxies from the 2dF Galaxy Redshift Survey to compare the properties of rich and poor superclusters. In particular, we study the properties of galaxies ( spectral types, colours, and luminosities) in superclusters. Methods. We compare the distribution of densities in rich and poor superclusters, and the properties of galaxies in high and low-density regions of rich superclusters, in poor superclusters, and in the field. In superclusters and in the field, we also compare the properties of galaxies in groups, and the properties of those galaxies which do not belong to any group. Results. We show that in rich superclusters the values of the luminosity density smoothed on a scale of 8 h(-1) Mpc are higher than in poor superclusters: the median density in rich superclusters is delta approximate to 7.5 and in poor superclusters delta approximate to 6.0. Rich superclusters contain high-density cores with densities delta > 10, while in poor superclusters such high-density cores are absent. The properties of galaxies in rich and poor superclusters and in the field are different: the fraction of early type, passive galaxies in rich superclusters is slightly higher than in poor superclusters, and is the lowest among the field galaxies. Most importantly, in high-density cores of rich superclusters ( d > 10), there is an excess of early type, passive galaxies in groups and clusters, as well as among those which do not belong to any group. The main galaxies of superclusters have a rather limited range of absolute magnitudes. The main galaxies of rich superclusters have higher luminosities than those of poor superclusters and of groups in the field. Conclusions. Our results show that both the local (group/cluster) environments and global (supercluster) environments influence galaxy morphologies and their star formation activity.
引用
收藏
页码:815 / 826
页数:12
相关论文
共 77 条
[1]  
Abell G. O., 1958, The Astrophysical Journal Supplement Series, V3, P211, DOI [DOI 10.1086/190036, 10.1086/190036]
[2]   A CATALOG OF RICH CLUSTERS OF GALAXIES [J].
ABELL, GO ;
CORWIN, HG ;
OLOWIN, RP .
ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 1989, 70 (01) :1-138
[3]   A merged catalog of clusters of galaxies from early Sloan digital sky survey data [J].
Bahcall, NA ;
McKay, TA ;
Annis, J ;
Kim, RSJ ;
Dong, F ;
Hansen, S ;
Goto, T ;
Gunn, JE ;
Miller, C ;
Nichol, RC ;
Postman, M ;
Schneider, D ;
Schroeder, J ;
Voges, W ;
Brinkmann, J ;
Fukugita, M .
ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 2003, 148 (02) :243-274
[4]   Galaxy ecology: groups and low-density environments in the SDSS and 2dFGRS [J].
Balogh, M ;
Eke, V ;
Miller, C ;
Lewis, I ;
Bower, R ;
Couch, W ;
Nichol, R ;
Bland-Hawthorn, J ;
Baldry, IK ;
Baugh, C ;
Bridges, T ;
Cannon, R ;
Cole, S ;
Colless, M ;
Collins, C ;
Cross, N ;
Dalton, G ;
De Propris, R ;
Driver, SP ;
Efstathiou, G ;
Ellis, RS ;
Frenk, CS ;
Glazebrook, K ;
Gomez, P ;
Gray, A ;
Hawkins, E ;
Jackson, C ;
Lahav, O ;
Lumsden, S ;
Maddox, S ;
Madgwick, D ;
Norberg, P ;
Peacock, JA ;
Percival, W ;
Peterson, BA ;
Sutherland, W ;
Taylor, K .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2004, 348 (04) :1355-1372
[5]   The bimodal galaxy color distribution: Dependence on luminosity and environment [J].
Balogh, ML ;
Baldry, IK ;
Nichol, R ;
Miller, C ;
Bower, R ;
Glazebrook, K .
ASTROPHYSICAL JOURNAL, 2004, 615 (02) :L101-L104
[6]   Shape statistics of Sloan Digital Sky Survey superclusters [J].
Basilakos, S .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2003, 344 (02) :602-606
[7]   An XMM-Newton observation of the dynamically active binary cluster A1750 [J].
Belsole, E ;
Pratt, GW ;
Sauvageot, JL ;
Bourdin, H .
ASTRONOMY & ASTROPHYSICS, 2004, 415 (03) :821-838
[8]   The scale dependence of relative galaxy bias: Encouragement for the "halo model'' description [J].
Blanton, Michael R. ;
Eisenstein, Daniel ;
Hogg, David W. ;
Zehavi, Idit .
ASTROPHYSICAL JOURNAL, 2006, 645 (02) :977-985
[9]  
BLANTON MR, 2004, APJ, V629, P143
[10]   LARGE-SCALE DISTRIBUTION OF GALAXIES AT THE GALACTIC POLES [J].
BROADHURST, TJ ;
ELLIS, RS ;
KOO, DC ;
SZALAY, AS .
NATURE, 1990, 343 (6260) :726-728