Two close large quasar groups of size ~ 350 Mpc at Two close large quasar groups
Two close large quasar groups of size ~ 350 Mpc at Two close large quasar groups
复制标题
两个接近的大型类星体群，尺寸约为 350 Mpc，位于 两个接近的大型类星体群
DOI：
10.1111/j.1365-2966.2011.19719.x
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发表时间：
2012
影响因子：
4.8
通讯作者：
Clowes R
中科院分区：
文献类型：
--
作者：
Clowes R
利用斯隆数字巡天的DR7QSO星表中的类星体数据，重新研究了小丑和坎普萨诺大型类星体群(LQG)。在1991年的发现中，LQG撞击了调查的北部、南部和东部边界。在DR7QSO资料中，LQG的西界、北界和南界基本相同，但向东延伸了~2°。在DR7QSO数据中，LQG有34个成员，其中。在小丑和坎普萨诺LQG附近和约2°0范围内，显示了一个新的38个成员群。这两个LQG的特征大小约为350-400Mpc，似乎与和谐宇宙学中的均匀尺度仅略有一致。除了它们本身的兴趣之外，这两个LQG还提供了研究星系早期大尺度结构和识别高z星系团的位置。提出了一种评定点连锁发现的群体的统计意义和超密度的方法。？2011英国皇家天文学会作者月报？？2011 RAS。
The Clowes and Campusano large quasar group (LQG) athas been re-examined using the quasar data from the DR7QSO catalogue of the Sloan Digital Sky Survey. In the 1991 discovery, the LQG impinged on the northern, southern and eastern limits of the survey. In the DR7QSO data, the western, northern and southern boundaries of the LQG remain essentially the same, but an extension eastwards of ~2° is indicated. In the DR7QSO data, the LQG has 34 members, with. A new group of 38 members is indicated atand within ~2°0 of the Clowes and Campusano LQG. The characteristic sizes of these two LQGs, ~350-400Mpc, appear to be only marginally consistent with the scale of homogeneity in the concordance cosmology. In addition to their intrinsic interest, these two LQGs provide locations in which to investigate early large-scale structure in galaxies and to identify high-zclusters. A method is presented for assessing the statistical significance and overdensity of groups found by linkage of points. © 2011 The Authors Monthly Notices of the Royal Astronomical Society © 2011 RAS.