The clustering of massive halos

被引:88
作者
Wetzel, Andrew R.
Cohn, J. D.
White, Martin
Holz, Daniel E.
Warren, Michael S.
机构
[1] Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA
[2] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM USA
[3] Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA
[4] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA
[5] Univ Chicago, Dept Astron & Astrophys, Chicago, IL 60637 USA
关键词
cosmology : theory; dark matter; galaxies : clusters : general; methods : numerical;
D O I
10.1086/510444
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
The clustering properties of dark matter halos are a firm prediction of modern theories of structure formation. We use two large-volume, high-resolution N-body simulations to study how the correlation function of massive dark matter halos depends on their mass, assembly history, and recent merger activity. We find that halos with the lowest concentrations are currently more clustered than those of higher concentration, the size of the effect increasing with halo mass; this agrees with trends found in studies of lower mass halos. The clustering dependence on other characterizations of the full mass accretion history appears weaker than the effect with concentration. Using the integrated correlation function, marked correlation functions, and a power-law fit to the correlation function, we find evidence that halos that have recently undergone a major merger or a large mass gain have slightly enhanced clustering relative to a randomly chosen population with the same mass distribution.
引用
收藏
页码:139 / 147
页数:9
相关论文
共 56 条
[1]  
Beisbart C, 2002, LECT NOTES PHYS, V600, P358
[2]   Luminosity- and morphology-dependent clustering of galaxies [J].
Beisbart, C ;
Kerscher, M .
ASTROPHYSICAL JOURNAL, 2000, 545 (01) :6-25
[3]   Self-consistent theory of halo mergers [J].
Benson, AJ ;
Kamionkowski, M ;
Hassani, SH .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2005, 357 (03) :847-858
[4]   EXCURSION SET MASS FUNCTIONS FOR HIERARCHICAL GAUSSIAN FLUCTUATIONS [J].
BOND, JR ;
COLE, S ;
EFSTATHIOU, G ;
KAISER, N .
ASTROPHYSICAL JOURNAL, 1991, 379 (02) :440-460
[5]   THE EVOLUTION OF GROUPS OF GALAXIES IN THE PRESS-SCHECHTER FORMALISM [J].
BOWER, RG .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1991, 248 (02) :332-352
[6]   Profiles of dark haloes: evolution, scatter and environment [J].
Bullock, JS ;
Kolatt, TS ;
Sigad, Y ;
Somerville, RS ;
Kravtsov, AV ;
Klypin, AA ;
Primack, JR ;
Dekel, A .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2001, 321 (03) :559-575
[7]   The formation histories of galaxy clusters [J].
Cohn, JD ;
White, M .
ASTROPARTICLE PHYSICS, 2005, 24 (4-5) :316-333
[8]   Clustering of galaxy clusters in cold dark matter universes [J].
Colberg, JM ;
White, SDM ;
Yoshida, N ;
MacFarland, TJ ;
Jenkins, A ;
Frenk, CS ;
Pearce, FR ;
Evrard, AE ;
Couchman, HMP ;
Efstathiou, G ;
Peacock, JA ;
Thomas, PA .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2000, 319 (01) :209-214
[9]   BIASED CLUSTERING IN THE COLD DARK MATTER COSMOGONY [J].
COLE, S ;
KAISER, N .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1989, 237 (04) :1127-1146
[10]   Halo models of large scale structure [J].
Cooray, A ;
Sheth, R .
PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 2002, 372 (01) :1-129