2006PASJ...58..931H

Query : 2006PASJ...58..931H

2006PASJ...58..931H - Publ. Astron. Soc. Jap., 58, 931-943 (2006/December-0)

Overdensity of X-ray sources in the field of two nearby clusters of galaxies: XMM-Newton view of A 194 and A 1060.

HUDAVERDI M., KUNIEDA H., TANAKA T., HABA Y., FURUZAWA A., TAWARA Y. and ERCAN E.N.

Abstract (from CDS):

Two nearby clusters of galaxies, A194 (z=0.018) and A1060 (z=0.0114), have been analyzed for their X-ray point-source properties with XMM-Newton EPIC-PN data. A multi-band source detection technique was applied to both of the clusters, resulting in 46 sources from the A194 field and 32 sources from the A1060 field, respectively. The cumulative log(N)-log(S) for a flux limit of FX >= 1 x 10–14erg cm–2 s–1 was calculated and compared with that of the Lockman Hole. A ∼ 3s excess of X-ray sources was found for the cluster regions. Considering the higher fraction observed in optical studies from the clusters, we estimate that the cluster source density is 6-times higher than the blank-field source density, and 15-times higher than the local group. Our X-ray selected sources have luminosity values of 1039.6 <= LX <= 1041.4 erg s–1, in which X-ray emission from LMXBs, hot halos and starburst galaxies becomes noticeable. The significance of the source-density excess gradually vanishes for sources with LX >= 1040.5erg s–1, at which point the source density becomes comparable to that of the blank-field level. Considering this confined low-luminosity range and the X-ray to optical luminosity ratios (LX/LB), the observed overdensity is ascribed to AGN fueling by its infall into cluster environment for LX <= 1040.5 erg s–1 in the X-ray luminosity function. However, the quenching of AGN activity by the deep cluster potential explains why the excess of the source density vanishes for brighter sources.

Abstract Copyright: ∼

Journal keyword(s): galaxies: clusters: individual (Abell 194, Abell 1060)

VizieR on-line data: <Available at CDS (J/PASJ/58/931): table6.dat table7.dat>

Nomenclature: Table 6: [HKT2006] A 194 NN (Nos 1-56). Table 7: [HKT2006] A 1060 NN (Nos 1-32).

Status at CDS : All or part of tables of objects could be ingested in SIMBAD with priority 2.

Simbad objects: 97

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Number of rows : 97
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 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 13622 1
2 XMMU J012503.2-012244 X 01 25 03.2 -01 22 44           ~ 1 0
3 XMMU J012508.2-011815 X 01 25 08.2 -01 18 15           ~ 1 0
4 XMMU J012510.7-011542 X 01 25 10.7 -01 15 42           ~ 1 0
5 NVSS J012513-012800 rG 01 25 13.16809 -01 28 01.7498           ~ 3 0
6 XMMU J012528.6-012430 X 01 25 28.6 -01 24 30           ~ 1 0
7 XMMU J012529.6-011455 X 01 25 29.6 -01 14 55           ~ 1 0
8 XMMU J012531.9-012232 X 01 25 31.9 -01 22 32           ~ 1 0
9 XMMU J012533.1-013333 X 01 25 33.1 -01 33 33           ~ 1 0
10 XMMU J012534.3-011640 X 01 25 34.3 -01 16 40           ~ 1 0
11 XMMU J012535.9-012546 X 01 25 35.9 -01 25 46           ~ 1 0
12 XMMU J012538.7-013107 X 01 25 38.7 -01 31 07           ~ 1 0
13 XMMU J012539.1-012126 X 01 25 39.1 -01 21 26           ~ 1 0
14 SDSS J012539.42-011308.5 QSO 01 25 39.429 -01 13 08.54           ~ 9 0
15 XMMU J012540.1-011945 X 01 25 40.1 -01 19 45           ~ 1 0
16 XMMU J012541.3-012836 X 01 25 41.3 -01 28 36           ~ 1 0
17 XMMU J012544.0-011728 X 01 25 44.0 -01 17 28           ~ 1 0
18 XMMU J012544.0-012732 X 01 25 44.0 -01 27 32           ~ 1 0
19 NGC 541 AGN 01 25 44.3069825040 -01 22 46.086331044 13.42 13.03 12.08     ~ 219 2
20 XMMU J012549.3-012412 X 01 25 49.3 -01 24 12           ~ 1 0
21 NGC 543 GiG 01 25 50.0052127008 -01 17 34.002691872   15.0       ~ 52 0
22 XMMU J012551.7-012919 X 01 25 51.7 -01 29 19           ~ 1 0
23 XMMU J012554.5-012517 X 01 25 54.5 -01 25 17           ~ 1 0
24 XMMU J012554.5-012343 X 01 25 54.5 -01 23 43           ~ 1 0
25 3XMM J012555.0-012925 Q? 01 25 54.9 -01 29 27           ~ 2 0
26 SDSS J012555.40-011117.9 QSO 01 25 55.4105326584 -01 11 17.946699360           ~ 12 0
27 XMMU J012556.3-012515 X 01 25 56.3 -01 25 15           ~ 1 0
28 SDSS J012556.54-012731.8 QSO 01 25 56.5496350704 -01 27 31.904493912           ~ 11 0
29 XMMU J012556.6-012610 X 01 25 56.6 -01 26 10           ~ 1 0
30 XMMU J012557.9-011717 X 01 25 57.9 -01 17 17           ~ 1 0
31 NGC 545 BiC 01 25 59.12 -01 20 24.8   13.21 13.34     ~ 142 2
32 XMMU J012600.5-012747 X 01 26 00.5 -01 27 47           ~ 1 0
33 NGC 547 rG 01 26 00.6208982520 -01 20 42.432452268   13.16 13.34     ~ 363 4
34 ACO 194 ClG 01 26 01.3 -01 22 02           ~ 363 2
35 XMMU J012601.9-012808 X 01 26 01.9 -01 28 08           ~ 1 0
36 XMMU J012602.8-012701 X 01 26 02.8 -01 27 01           ~ 1 0
37 XMMU J012606.1-011744 X 01 26 06.1 -01 17 44           ~ 1 0
38 XMMU J012610.6-012349 X 01 26 10.6 -01 23 49           ~ 1 0
39 XMMU J012611.0-012510 X 01 26 11.0 -01 25 10           ~ 1 0
40 XMMU J012611.1-011155 X 01 26 11.1 -01 11 55           ~ 1 0
41 XMMU J012611.2-012802 X 01 26 11.2 -01 28 02           ~ 1 0
42 SDSS J012612.12-012903.9 QSO 01 26 12.1259070648 -01 29 04.038150912           ~ 11 0
43 XMMU J012612.2-012953 X 01 26 12.2 -01 29 53           ~ 1 0
44 XMMU J012614.9-012240 X 01 26 14.9 -01 22 40           ~ 1 0
45 LEDA 73961 GiC 01 26 21.80 -01 16 30.9   16       ~ 12 0
46 XMMU J012622.5-012654 X 01 26 22.5 -01 26 54           ~ 1 0
47 XMMU J012623.7-011733 X 01 26 23.7 -01 17 33           ~ 1 0
48 SDSS J012624.64-012413.2 QSO 01 26 24.6424732512 -01 24 13.335829272           ~ 9 0
49 XMMU J012627.9-011808 X 01 26 27.9 -01 18 08           ~ 1 0
50 XMMU J012635.5-012349 X 01 26 35.5 -01 23 49           ~ 1 0
51 NGC 1269 EmG 03 17 18.5785534752 -41 06 28.628735184 9.85 9.83 8.81 8.72   ~ 445 1
52 NGC 1553 GiP 04 16 10.4697802536 -55 46 48.072797400 10.76 10.10 9.40 8.74   ~ 395 2
53 ClG 0451-03 ClG 04 54 10.9 -03 01 07     20.0     ~ 368 0
54 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
55 M 81 Sy2 09 55 33.1726556496 +69 03 55.062505368   7.89 6.94     ~ 4725 3
56 XMMU J103558.0-273002 X 10 35 58.0 -27 30 02           ~ 1 0
57 XMMU J103603.5-272958 X 10 36 03.5 -27 29 58           ~ 1 0
58 XMMU J103610.4-272850 X 10 36 10.4 -27 28 50           ~ 1 0
59 XMMU J103616.2-273945 X 10 36 16.2 -27 39 45           ~ 1 0
60 XMMU J103620.0-273927 X 10 36 20.0 -27 39 27           ~ 1 0
61 NGC 3308 GiG 10 36 22.3394738568 -27 26 17.314025100   13.29 12.36 11.73 11.11 ~ 84 0
62 XMMU J103625.9-273729 X 10 36 25.9 -27 37 29           ~ 1 0
63 XMMU J103626.9-273819 X 10 36 26.9 -27 38 19           ~ 1 0
64 2MASX J10362853-2722362 GiC 10 36 28.5333071352 -27 22 36.014251440   19.08   17.30   ~ 10 0
65 XMMU J103629.9-272133 X 10 36 29.9 -27 21 33           ~ 1 0
66 XMMU J103634.8-274159 X 10 36 34.8 -27 41 59           ~ 1 0
67 NGC 3309 rG 10 36 35.6607096792 -27 31 05.732321664   11.98 11.78 10.34 10.51 ~ 167 0
68 NAME Hydra I Cluster ClG 10 36 36.0 -27 31 04           ~ 905 1
69 XMMU J103638.6-271843 X 10 36 38.6 -27 18 43           ~ 1 0
70 XMMU J103638.7-274250 X 10 36 38.7 -27 42 50           ~ 1 0
71 NGC 3311 EmG 10 36 42.821 -27 31 42.02   11.93 10.93 10.00 9.67 ~ 310 2
72 XMMU J103643.3-271927 X 10 36 43.3 -27 19 27           ~ 1 0
73 XMMU J103645.4-274157 X 10 36 45.4 -27 41 57           ~ 1 0
74 XMMU J103645.6-272559 X 10 36 45.6 -27 25 59           ~ 1 0
75 XMMU J103650.7-273549 X 10 36 50.7 -27 35 49           ~ 1 0
76 XMMU J103658.4-272057 X 10 36 58.4 -27 20 57           ~ 1 0
77 XMMU J103659.8-273028 X 10 36 59.8 -27 30 28           ~ 1 0
78 NGC 3312 LIN 10 37 02.5165552728 -27 33 53.924090760   12.63 13.96     ~ 122 0
79 6dFGS gJ103704.9-272400 GiC 10 37 04.87560 -27 23 59.3736   15.6       ~ 21 0
80 XMMU J103709.3-273513 X 10 37 09.3 -27 35 13           ~ 1 0
81 NGC 3314 Sy1 10 37 12.9225121752 -27 41 02.360891472   13.57 13.11 12.42   ~ 52 0
82 XMMU J103714.2-273306 X 10 37 14.2 -27 33 06           ~ 1 0
83 XMMU J103715.0-272532 X 10 37 15.0 -27 25 32           ~ 1 0
84 MCG-04-25-043 GiC 10 37 17.00 -27 28 09.0   14.64 13.49 13.17   ~ 32 0
85 XMMU J103729.1-274234 X 10 37 29.1 -27 42 34           ~ 1 0
86 XMMU J103737.1-273601 X 10 37 37.1 -27 36 01           ~ 1 0
87 XMMU J103737.5-272900 X 10 37 37.5 -27 29 00           ~ 1 0
88 XMMU J103748.7-272959 X 10 37 48.7 -27 29 59           ~ 1 0
89 NAME Lockman Hole reg 10 45 00.0 +58 00 00           ~ 910 0
90 ClG 1054-03 ClG 10 57 00.2 -03 37 27     22     ~ 458 0
91 ACO 1367 ClG 11 44 44.6 +19 41 59           ~ 1127 1
92 M 87 AGN 12 30 49.42338414 +12 23 28.0436859 10.16 9.59 8.63   7.49 ~ 7815 3
93 NGC 4697 GiG 12 48 35.8981498824 -05 48 02.482374564   10.97   9.83   ~ 895 0
94 NGC 5044 BiC 13 15 23.9607836592 -16 23 07.547751744   11.9   10.74   ~ 531 0
95 3C 295 Sy1 14 11 20.6 +52 12 09   22.34 20.80 18.54   ~ 1021 4
96 ACO 1995 ClG 14 52 55.0 +58 02 59           ~ 140 0
97 ACO 2256 ClG 17 03 37.5 +78 37 23           ~ 928 1

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