期刊
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷 413, 期 1, 页码 301-312出版社
OXFORD UNIV PRESS
DOI: 10.1111/j.1365-2966.2010.18137.x
关键词
galaxies: clusters: general; cosmology: theory; large-scale structure of Universe
资金
- Direct For Mathematical & Physical Scien [905801] Funding Source: National Science Foundation
- Division Of Astronomical Sciences [905801] Funding Source: National Science Foundation
We construct a filament catalogue using an extension of the halo-based filament finder of Zhang et al. (2009), in a 250 Mpc h-1 side N-body simulation, and study the properties of filaments ending upon or in the proximity of galaxy clusters (within 10 Mpc h-1). In this region, the majority of filamentary mass, halo mass and galaxy richness centred upon the cluster tends to lie in sheets, which are not always coincident. Fixing a sheet width of 3 Mpc h-1 for definiteness, we find the sheet orientations and (connected) filamentary mass, halo mass and richness fractions relative to the surrounding sphere. Filaments usually have one or more end points outside the sheet determined by filament or halo mass or richness, with at least one having a large probability to be aligned with the perpendicular of the plane. Scatter in mock cluster mass measurements, for several observables, is often correlated with the observational direction relative to these local sheets, most often for richness and weak lensing, somewhat less for Compton decrement and least often for velocity dispersions. The long axis of the cluster also tends to lie in the sheets and its orientation relative to the line of sight also correlates with mass scatter.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据