CLUSTERING OF INTERMEDIATE LUMINOSITY X-RAY SELECTED AGN AT Z ∼ 3

被引：0
|
作者：
Francke, H. [1 ,2 ]
Gawiser, E. [2 ,3 ,4 ,5 ]
Lira, P. [1 ]
Treister, E. [6 ]
Virani, S. [2 ]
Cardamone, C. [2 ]
Urry, C. M. [4 ,5 ]
van Dokkum, P. [2 ]
Quadri, R. [2 ]
机构：
[1] Univ Chile, Dept Astron, Casilla 36-D, Santiago, Chile
[2] Yale Univ, Dept Astron, New Haven, CT 06520 USA
[3] Rutgers State Univ, Dept Phys & Astron, Piscataway, NJ 08854 USA
[4] Yale Univ, Yale Ctr Astron & Astrophys, New Haven, CT 06520 USA
[5] Yale Univ, Dept Phys, New Haven, CT 06520 USA
[6] European Southern Observ, Santiago, Chile
来源：
XII IAU REGIONAL LATIN AMERICAN MEETING | 2009年 / 35卷
关键词：
galaxies: active; galaxies: high-redshift; large-scale structure of universe; DEEP FIELD-SOUTH; ACTIVE GALACTIC NUCLEI; POINT-SOURCE CATALOGS; LYMAN-BREAK GALAXIES; QUASARS; DEPENDENCE; EVOLUTION; MUSYC;
D O I：
暂无
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We present the first clustering results of X-ray selected AGN at z similar to 3. Using Chandra X-ray imaging and UVR optical colors from MUSYC photometry in the ECDF-S field, we selected a sample of 58 z similar to 3 AGN candidates. From the optical data we also selected 1385 LBG at 2.8 < z < 3.8 with R < 25.5. We performed auto-correlation and cross-correlation analyses, and here we present results for the clustering amplitudes and dark matter halo masses of each sample. For the LBG we find a correlation length Of r(0,LBG) = 6.7 +/- 0.5 Mpc, implying a bias value of 3.5 +/- 0.3 and dark matter (DM) halo masses of log(M-min/M-circle dot) = 11.8 +/- 0.1. The AGN-LBG cross-correlation yields r(0,AGN-LBC) = 8.7 +/- 1.9 Mpc, implying for AGN at 2.8 < z 3.8 a bias value of 5.5 +/- 2.0 and DM halo masses of log(M-min/M-circle dot) = 12.6(-0.8)(+0.5). Evolution of dark matter halos in the Lambda CDM cosmology implies that today these z - 3 AGN are found in high inass galaxies with a typical luminosity 7(-2)(+4) L*.
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页码：221 / +
页数：2
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