2012ApJ...758...47A

Query : 2012ApJ...758...47A

2012ApJ...758...47A - Astrophys. J., 758, 47 (2012/October-2)

Occupation of x-ray-selected galaxy groups by X-ray active galactic nuclei.

ALLEVATO V., FINOGUENOV A., HASINGER G., MIYAJI T., CAPPELLUTI N., SALVATO M., ZAMORANI G., GILLI R., GEORGE M.R., TANAKA M., BRUSA M., SILVERMAN J., CIVANO F., ELVIS M. and SHANKAR F.

Abstract (from CDS):

We present the first direct measurement of the mean halo occupation distribution (HOD) of X-ray-selected active galactic nuclei (AGNs) in the COSMOS field at z ≤ 1, based on the association of 41 XMM and 17 C-COSMOS AGNs with member galaxies of 189 X-ray-detected galaxy groups from XMM-Newton and Chandra data. We model the mean AGN occupation in the halo mass range log M200[M☉] = 13-14.5 with a rolling-off power law with the best-fit index α = 0.06(- 0.22; 0.36) and normalization parameter fa = 0.05(0.04; 0.06). We find the mean HOD of AGNs among central galaxies to be modeled by a softened step function at log Mh> log Mmin= 12.75(12.10, 12.95) M☉ while for the satellite AGN HOD we find a preference for an increasing AGN fraction with Mh, suggesting that the average number of AGNs in satellite galaxies grows slower (αs< 0.6) than the linear proportion (αs= 1) observed for the satellite HOD of samples of galaxies. We present an estimate of the projected autocorrelation function (ACF) of galaxy groups over the range of rp= 0.1-40 h–1 Mpc at < z > = 0.5. We use the large-scale clustering signal to verify the agreement between the group bias estimated by using the observed galaxy groups ACF and the value derived from the group mass estimates. We perform a measurement of the projected AGN-galaxy-group cross-correlation function, excluding from the analysis AGNs that are within galaxy groups and we model the two-halo term of the clustering signal with the mean AGN HOD based on our results.

Abstract Copyright: ∼

Journal keyword(s): dark matter - galaxies: active - large-scale structure of universe - quasars: general - surveys - X-rays: general

Nomenclature: Table 2: [AFH2012] NNN N=58 among (Nos 11-333), [AFH2012] XMM NNNNN N=41 among (Nos 6-60270), [AFH2012] Chandra NNNNN N=52 among (Nos 24-12390)

Simbad objects: 112

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Number of rows : 112
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 [AFH2012] 138 GrG 09 58 01.29 +02 15 49.0           ~ 3 0
2 ACS-GC 20103640 rG 09 58 02.102 +02 15 41.00   24.987 23.825   20.888 ~ 28 0
3 [AFH2012] 296 GrG 09 58 13.24 +02 00 07.2           ~ 2 0
4 COSMOS2015 468246 AGN 09 58 14.70 +02 00 33.1   25.671 24.826   22.563 ~ 17 0
5 XCLASS 1888 GrG 09 58 23.94 +02 49 11.7           ~ 16 0
6 SDSS J095831.64+024901.5 AGN 09 58 31.649 +02 49 01.59   21.345 21.060   19.91 ~ 22 0
7 [AFH2012] 118 GrG 09 58 32.31 +02 08 08.5           ~ 3 0
8 ACS-GC 20102891 AGN 09 58 33.17 +02 08 58.6   24.611 24.329   22.536 ~ 24 0
9 ACS-GC 20130933 AGN 09 58 34.58 +02 21 33.3   25.420 24.812   22.186 ~ 18 0
10 [AFH2012] 174 GrG 09 58 34.99 +02 20 50.0           ~ 4 0
11 [AFH2012] 259 GrG 09 58 38.27 +02 49 29.9           ~ 3 0
12 ACS-GC 20198502 AGN 09 58 38.38 +02 49 35.0   23.251 22.728   20.857 ~ 6 0
13 SDSS J095839.00+021610.5 AGN 09 58 39.005 +02 16 10.60   23.772 22.506   20.14 ~ 29 0
14 [AFH2012] 171 GrG 09 58 39.6 +02 16 14           ~ 4 0
15 [AFH2012] 93 GrG 09 58 40.6 +02 04 26           ~ 2 0
16 SDSS J095840.60+020426.6 AGN 09 58 40.6090163180 +02 04 26.555992862 21.79 21.08 20.40   19.06 ~ 37 0
17 [AFH2012] 194 GrG 09 58 47.90 +02 24 10.1           ~ 3 0
18 SDSS J095848.21+022409.1 rG 09 58 48.210 +02 24 09.10   23.316 22.291   20.61 ~ 29 0
19 [AFH2012] 300 GrG 09 58 54.94 +02 14 14.3           ~ 3 0
20 COSMOS2015 628037 AGN 09 58 59.52 +02 15 11.2         19.240 ~ 14 0
21 COSMOS2015 553512 AGN 09 59 05.70 +02 08 29.6 23.515 23.38 22.52 22.28 22.077 ~ 15 0
22 SDSS J095907.65+020820.6 Sy1 09 59 07.656 +02 08 20.67   20.8608 19.8155   18.92 ~ 53 0
23 [AFH2012] 298 GrG 09 59 07.66 +02 08 20.4           ~ 2 0
24 [AFH2012] XMM 392 AGN 09 59 10.4856 +02 07 32.317           ~ 1 0
25 ACS-GC 20045278 AGN 09 59 15.059 +01 49 26.29 23.91 23.10 22.34 21.654 20.926 ~ 31 0
26 [AFH2012] 39 GrG 09 59 16.91 +01 49 29.8           ~ 7 0
27 COSMOS J095921.30+024030.4 Sy1 09 59 21.2950971696 +02 40 30.342553392 20.32 19.74 19.30   17.320 ~ 47 0
28 [AFH2012] 275 GrG 09 59 21.3072 +02 40 30.288           ~ 4 0
29 SDSS J095939.76+023117.1 rG 09 59 39.769 +02 31 16.84 25.60 24.75 22.85 22.060 20.742 ~ 35 0
30 CDGS 47 GrG 09 59 40.70 +02 31 06.1           ~ 24 0
31 ACS-GC 20153793 AGN 09 59 40.858 +02 30 51.21 25.02 24.86 23.4773 22.82 21.753 ~ 28 0
32 [AFH2012] 161 GrG 09 59 49 +02 20.5           ~ 8 0
33 [FGH2007] 101 GrG 09 59 49.1 +02 12 22           ~ 6 0
34 ACS-GC 20124229 AGN 09 59 50.21 +02 21 23.0 24.47 23.99 22.9062 22.86 22.117 ~ 27 0
35 SDSS J095951.04+021236.8 AGN 09 59 51.050 +02 12 36.87 23.95 22.49 20.972 20.114 19.408 ~ 21 0
36 2MASS J09595137+0140489 rG 09 59 51.374 +01 40 48.95   21.485 20.248   17.426 ~ 20 0
37 XCLASS 2163 GrG 09 59 51.54 +01 40 46.5           ~ 19 0
38 [AFH2012] 303 GrG 09 59 58.4736 +02 15 30.744           ~ 6 0
39 SDSS J095958.47+021530.8 AGN 09 59 58.474 +02 15 30.84   21.2843 20.9745   19.973 ~ 42 0
40 COSMOS2015 766661 rG 10 00 00.46 +02 27 39.3 25.86 25.19 23.71 22.97 21.799 ~ 18 0
41 [AFH2012] 277 GrG 10 00 01.11 +02 37 57.9           ~ 3 0
42 ACS-GC 20179964 rG 10 00 01.110 +02 37 57.91   23.065 22.428   20.307 ~ 28 0
43 [AFH2012] 217 GrG 10 00 01.18 +02 27 19.3           ~ 7 0
44 COSMOS2015 598139 AGN 10 00 05.570 +02 12 23.37 23.970 23.74 23.07 22.70 21.782 ~ 20 0
45 XCLASS 1886 GrG 10 00 05.72 +02 12 11.5           ~ 11 0
46 [AFH2012] 324 GrG 10 00 05.79 +02 21 37.8           ~ 6 0
47 ACS-GC 20151038 rG 10 00 06.42 +02 33 43.3 24.58 23.99 22.632 22.20 21.049 ~ 34 0
48 ACS-GC 20123947 AGN 10 00 07.277 +02 21 31.48 25.97 25.34 23.98 23.33 22.244 ~ 23 0
49 [AFH2012] 292 GrG 10 00 07.94 +02 33 08.6           ~ 2 0
50 [FGH2007] 89 ClG 10 00 09.60 +02 41 42.0           ~ 2 0
51 2MASS J10001014+0241412 QSO 10 00 10.1532191568 +02 41 41.387338248   20.842 19.583   17.797 ~ 30 0
52 [VV2006] J100012.9+023523 QSO 10 00 12.9097049400 +02 35 22.829192268   19.0 19.24 18.5 18.89 ~ 81 0
53 [AFH2012] 231 GrG 10 00 13.01 +02 35 19.9           ~ 4 0
54 [AFH2012] 124 GrG 10 00 13.57 +02 12 30.6           ~ 4 0
55 ACS-GC 20094653 Sy2 10 00 13.7238326496 +02 12 21.278230308   20.029 19.317   18.331 ~ 34 0
56 XCLASS 1879 GrG 10 00 13.925 +02 22 48.00           ~ 8 0
57 SDSS J100013.92+022249.5 rG 10 00 13.929 +02 22 49.58         18.553 ~ 41 0
58 ACS-GC 20177524 AGN 10 00 15.985 +02 38 33.12   25.316 24.043   22.00 ~ 21 0
59 [AFH2012] 216 GrG 10 00 15.99 +02 38 50.6           ~ 3 0
60 2MASS J10002295+0213126 Sy2 10 00 22.9436315880 +02 13 12.483919020 19.21 18.71 18.52 18.17 18.02 ~ 39 0
61 ACS-GC 20148180 rG 10 00 24.862 +02 33 02.74 23.303 23.2418 22.48 21.862 21.155 ~ 33 0
62 [AFH2012] 289 GrG 10 00 27.22 +02 33 13.7           ~ 6 0
63 XCLASS 1877 GrG 10 00 28.07 +02 41 25.1           ~ 15 0
64 SDSS J100028.28+024103.3 rG 10 00 28.280 +02 41 03.31   21.099 19.912   17.350 ~ 30 0
65 NAME COSMOS Field reg 10 00 28.60 +02 12 21.0           ~ 3639 0
66 COSMOS2015 865155 rG 10 00 37.98 +02 36 40.2 24.72 24.57 23.68 23.21 22.088 ~ 17 0
67 [AFH2012] 234 GrG 10 00 38.43 +02 36 18.0           ~ 5 0
68 [AFH2012] 136 GrG 10 00 41.98 +02 13 01.2           ~ 2 0
69 COSMOS2015 605061 AGN 10 00 42.24 +02 12 56.1 24.42 24.08 23.26 22.68 21.833 ~ 23 0
70 SDSS J100043.13+020637.2 Sy1 10 00 43.1299846800 +02 06 37.403465580 20.25 19.86 19.37   18.79 ~ 125 0
71 [AFH2012] 110 GrG 10 00 43.1496 +02 06 37.332           ~ 2 0
72 CXOU J100047.6+013940 GrG 10 00 47.43 +01 39 30.5           ~ 9 0
73 ACS-GC 20014638 rG 10 00 47.62 +01 40 18.6   20.823 20.051   18.198 ~ 15 0
74 ACS-GC 20090151 Sy2 10 00 49.51 +02 17 08.8         22.563 ~ 25 0
75 [AFH2012] 35 GrG 10 00 49.58 +01 49 23.8           ~ 1 0
76 SDSS J100049.58+014923.7 rG 10 00 49.589 +01 49 23.71 24.68 23.46 21.96 21.043 20.175 ~ 27 0
77 [FGH2007] 62 GrG 10 00 50.7 +02 16 57           ~ 4 0
78 ACS-GC 20117749 AGN 10 00 50.78 +02 24 06.8   24.548 24.012   21.460 ~ 22 0
79 [AFH2012] 186 GrG 10 00 52.20 +02 24 01.1           ~ 2 0
80 [AFH2012] 322 GrG 10 00 54.5 +02 16 03           ~ 5 0
81 ACS-GC 20089821 rG 10 00 54.751 +02 16 11.27 23.223 22.85 22.20 21.684 21.009 ~ 32 0
82 COSMOS2015 693691 AGN 10 00 57.86 +02 20 54.2         21.28 ~ 14 0
83 [KLI2009] 658 GrG 10 00 58.2 +02 20 57           ~ 2 0
84 2MASS J10010071+0216411 Sy2 10 01 00.6663762552 +02 16 41.443376088 20.32 19.46 18.94   17.518 ~ 30 0
85 [AFH2012] 219 GrG 10 01 05.1552 +02 30 48.384           ~ 2 0
86 ACS-GC 20145755 rG 10 01 05.838 +02 30 41.01         20.637 ~ 29 0
87 ACS-GC 20062797 AGN 10 01 05.90 +01 59 19.8   24.683 23.939   21.527 ~ 28 0
88 [AFH2012] 78 GrG 10 01 05.91 +01 59 19.8           ~ 2 0
89 COSMOS2015 456796 AGN 10 01 06.801 +01 59 24.50 27.15 26.27 24.75 23.81 22.54 ~ 17 0
90 [AFH2012] 196 GrG 10 01 06.96 +02 25 09.4           ~ 3 0
91 SDSS J100107.15+022519.5 rG 10 01 07.1522299656 +02 25 19.506065412         17.08 ~ 21 0
92 [AFH2012] 142 GrG 10 01 10.06 +02 16 49.0           ~ 3 0
93 [AFH2012] 20 GrG 10 01 17.99 +01 36 11.3           ~ 2 0
94 SDSS J100120.63+022601.5 AGN 10 01 20.634 +02 26 01.55   21.561 20.702   19.64 ~ 27 0
95 2XMM J100120.6+013604 Sy1 10 01 20.691 +01 36 05.30   21.088 20.232   18.686 ~ 17 0
96 2XMM J100129.3+013633 Sy2 10 01 29.4222404328 +01 36 33.785358768 19.74 18.60 17.95   16.418 ~ 38 0
97 [AFH2012] 19 GrG 10 01 29.48 +01 36 34.0           ~ 2 0
98 SDSS J100139.75+022548.7 rG 10 01 39.7582624824 +02 25 48.620442360         15.527 ~ 39 0
99 [AFH2012] 69 GrG 10 01 40.83 +01 58 14.9           ~ 2 0
100 ACS-GC 20059069 AGN 10 01 41.93 +01 58 10.0   23.847 23.428   21.661 ~ 23 0
101 CDGS 3 GrG 10 01 42.66 +02 25 49.9           ~ 16 0
102 ACS-GC 20085389 AGN 10 01 46.102 +02 09 18.35 24.52 23.67 22.24 21.546 20.816 ~ 20 0
103 [AFH2012] 79 GrG 10 01 46.78 +02 03 12.5           ~ 4 0
104 [AFH2012] 127 GrG 10 01 46.8 +02 09 38           ~ 5 0
105 SDSS J100147.27+015258.0 rG 10 01 47.309 +01 52 58.18   24.171 22.723   19.719 ~ 27 0
106 2MASS J10014735+0203141 rG 10 01 47.3509417152 +02 03 14.124069252 22.461 21.265 19.645 18.998 18.354 ~ 27 0
107 [AFH2012] 52 GrG 10 01 47.57 +01 52 58.8           ~ 7 0
108 ACS-GC 20058647 Sy2 10 02 02.561 +02 01 45.14 23.100 22.93 22.30 21.982 21.051 ~ 45 0
109 [AFH2012] 87 GrG 10 02 02.6 +02 01 57           ~ 4 0
110 ACS-GC 20081197 Sy1 10 02 18.32 +02 10 53.0   21.0899 20.4228   19.405 ~ 31 0
111 [AFH2012] 128 GrG 10 02 20.24 +02 10 52.2           ~ 3 0
112 NAME NOAO Deep Wide Field reg 14 32 05.75 +34 16 47.5           ~ 430 0

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