The distribution of ejected subhaloes and its implication for halo assembly bias
The distribution of ejected subhaloes and its implication for halo assembly bias
复制标题
喷射子晕的分布及其对晕组装偏差的影响
DOI：
10.1111/j.1365-2966.2009.14884.x
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发表时间：
2008-11
影响因子：
4.8
通讯作者：
Jing, Y. P.
中科院分区：
文献类型：
--
作者：
Wang, Huiyuan;Mo, H. J.;Jing, Y. P.
利用高分辨率的宇宙学N体模拟，我们识别出了被弹出的子晕群体，它们在红移z = 0时是晕，但曾经在高红移时包含在更 massive（此处可能是“巨大的”，原词可能有误，也许是massive）的“宿主”晕中。被弹出的子晕在……中的比例
Using a high-resolution cosmological N-body simulation, we identify the ejected population of subhaloes, which are haloes at redshift z = 0 but were once contained in more massive 'host' haloes at high redshifts. The fraction of the ejected subhaloes in the total halo population of the same mass ranges from 9 to 4 per cent for halo masses from ∼10 11 to ∼10 12 h ―1 M ⊙ . Most of the ejected subhaloes are distributed within four times the virial radius of their hosts. These ejected subhaloes have distinct velocity distribution around their hosts in comparison to normal haloes. The number of subhaloes ejected from a host of given mass increases with the assembly redshift of the host. Ejected subhaloes in general reside in high-density regions, and have a much higher bias parameter than normal haloes of the same mass. They also have earlier assembly times, so that they contribute to the assembly bias of dark matter haloes seen in cosmological simulations. However, the assembly bias is not dominated by the ejected population, indicating that large-scale environmental effects on normal haloes are the main source for the assembly bias.
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DOI：
10.1086/305209
发表时间：
1997-07
期刊：
The Astrophysical Journal
影响因子：
--
作者：
Y. Jing;Y. Jing;H. Mo;G. Börner
通讯作者：
Y. Jing;Y. Jing;H. Mo;G. Börner
DOI：
10.1111/j.1745-3933.2005.00084.x
发表时间：
2005-06
影响因子：
--
作者：
Liang Gao;V. Springel;S. White
通讯作者：
Liang Gao;V. Springel;S. White
DOI：
10.1086/511130
发表时间：
2006-10
期刊：
The Astrophysical Journal
影响因子：
--
作者：
Yipeng Jing;Y. Suto;H. Mo
通讯作者：
Yipeng Jing;Y. Suto;H. Mo
DOI：
10.1086/591512
发表时间：
2008-03
期刊：
The Astrophysical Journal
影响因子：
--
作者：
N. Dalal;M. White;J. Bond;A. Shirokov
通讯作者：
N. Dalal;M. White;J. Bond;A. Shirokov
DOI：
10.1111/j.1365-2966.2004.08360.x
发表时间：
2004-04
影响因子：
4.8
作者：
Liang Gao;S. White;A. Jenkins;F. Stoehr;V. Springel
通讯作者：
Liang Gao;S. White;A. Jenkins;F. Stoehr;V. Springel