Evolution of the galaxy correlation function at redshifts 0.2 < z < 3

被引：0
作者：
Sultan, Andrzej M. [1 ]
机构：
[1] Nicolaus Copernicus Astron Ctr, Bartycka 18, PL-00716 Warsaw, Poland
来源：
ZELDOVICH UNIVERSE: GENESIS AND GROWTH OF THE COSMIC WEB | 2016年 / 11卷 / S308期
关键词：
galaxies: distances and redshifts; galaxies: statistics; large-scale structure of universe; COSMOS;
D O I：
10.1017/S1743921316010000
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We determine the auto-correlation function (ACF) of galaxies using massive deep galaxy surveys for which distances to individual objects are assessed using photometric redshifts. The method is applied to the 2deg COSMOS survey of similar to 300000 galaxies with i+ < 25 and z(ph) less than or similar to 3. The distance estimates based on photometric redshifts are not sufficiently accurate to be directly used to determine the ACF. Nevertheless, the photometric redshifts carry statistical information on the data distribution on (very) large scales. The investigation of the surface distribution of galaxies in several redshift (=distance) bins allows us to determine the spatial (3D) ACF over the redshift range of 0.2 - 3.2 or look back time of 2.4 - 11.5 Gy.
引用
收藏
页码：291 / 292
页数：2
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