2008ApJ...687..899R

Query : 2008ApJ...687..899R

2008ApJ...687..899R - Astrophys. J., 687, 899-918 (2008/November-2)

The regulation of cooling and star formation in luminous galaxies by active galactic nucleus feedback and the cooling-time/entropy threshold for the onset of star formation.

RAFFERTY D.A., McNAMARA B.R. and NULSEN P.E.J.

Abstract (from CDS):

Using broadband optical imaging and Chandra X-ray data for a sample of 46 cluster central dominant galaxies (CDGs), we investigate the connection between star formation, the intracluster medium (ICM), and the central active galactic nucleus (AGN). We report the discovery of a remarkably sharp threshold for the onset of star formation that occurs when the central cooling time of the hot atmosphere falls below ∼5x108 yr, or equivalently when the central entropy falls below ∼30 keV cm2. In addition to this criterion, star formation in cooling flows also appears to require that the X-ray and galaxy centroids lie within ∼20 kpc of each other and that the jet (cavity) power is smaller than the X-ray cooling luminosity. These three criteria, together with the high ratio of cooling time to AGN outburst (cavity) age across our sample, directly link the presence of star formation and AGN activity in CDGs to cooling instabilities in the intracluster plasma. Our results provide compelling evidence that AGN feedback into the hot ICM is largely responsible for regulating cooling and star formation in the cores of clusters, leading to the significant growth of supermassive black holes in CDGs at late times.

Abstract Copyright: ∼

Journal keyword(s): Galaxies: Cooling Flows - Galaxies: Clusters: General - Galaxies: Elliptical and Lenticular, cD - X-Rays: Galaxies: Clusters

Simbad objects: 88

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Number of rows : 88
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 ACO 85 ClG 00 41 36.21 -09 19 30.4           ~ 909 0
2 MCG-02-02-086 BiC 00 41 50.451 -09 18 11.46   14 13.52 12.94   ~ 139 1
3 87GB 005314.6+260945 BiC 00 55 50.583 +26 24 36.68   18.63 19.57 16.26   ~ 209 1
4 ACO 133 ClG 01 02 41.5 -21 52 53           ~ 368 1
5 ESO 541-13 BiC 01 02 42.026 -21 52 34.50   14.54 15.1 12.94   ~ 76 3
6 ACO 223 ClG 01 37 55.9 -12 49 11           ~ 122 1
7 2MASX J01375602-1249106 BiC 01 37 55.9966043088 -12 49 10.471867788           ~ 5 0
8 NGC 708 BiC 01 52 46.482 +36 09 06.53 14.85 14.27 13.29 12.67 12.09 ~ 240 3
9 ACO 262 ClG 01 52 50.4 +36 08 46           ~ 699 1
10 ACO 383 ClG 02 48 03.3915 -03 31 45.228           ~ 359 0
11 SDSS J024803.39-033145.2 BiC 02 48 03.3956603208 -03 31 45.600488256   17.89   15.76   ~ 22 1
12 NGC 1129 BiC 02 54 27.400 +41 34 46.70   14.6 13.6     ~ 120 1
13 2A 0251+413 ClG 02 54 32.2 +41 35 10           ~ 315 1
14 ACO 426 ClG 03 19 47.2 +41 30 47           ~ 2259 1
15 3C 84 Sy2 03 19 48.1599902040 +41 30 42.108850836   13.10 12.48 11.09   ~ 4008 3
16 ZwCl 0335+0956 ClG 03 38 35.3 +09 57 54           ~ 383 1
17 2MASX J03384056+0958119 LIN 03 38 40.568 +09 58 11.94   16.5       ~ 41 1
18 ACO 478 ClG 04 13 20.7 +10 28 35           ~ 502 0
19 2MASX J04132526+1027551 BiC 04 13 25.266 +10 27 55.14           ~ 23 1
20 NAME A496cD BiC 04 33 37.8465077496 -13 15 42.989961204   13.95 14.22     ~ 100 1
21 ACO 496 ClG 04 33 38.8 -13 15 59           ~ 694 2
22 LEDA 1240180 GiC 04 54 03.82 +02 53 32.4           ~ 5 0
23 ACO 520 ClG 04 54 10.1 +02 55 38           ~ 436 0
24 ZwCl 0735+7421 ClG 07 41 40.3 +74 14 58     17.70     ~ 254 0
25 4C 74.13 BiC 07 41 44.449 +74 14 39.59   20.15 18.53     ~ 25 2
26 ClG 0745-19 ClG 07 47 31.3 -19 17 40           ~ 372 0
27 2MASX J07473129-1917403 BiC 07 47 31.3247085936 -19 17 40.013334276   19.60       ~ 409 1
28 NAME Hya A LIN 09 18 05.66848602 -12 05 43.8060823   14.38 14.8     ~ 1012 1
29 ACO 780 ClG 09 18 30 -12 15.7           ~ 453 0
30 ZwCl 1021+0426 ClG 10 23 39.0 +04 11 14   15.6 17.95     ~ 283 0
31 NAME Z3146 BCG BiC 10 23 39.634 +04 11 10.66   18.6       ~ 29 0
32 2MASX J10404446+3957117 Sy2 10 40 44.4947481456 +39 57 11.198711664   18.76 18.14     ~ 38 1
33 ACO 1068 ClG 10 40 47.1 +39 57 19           ~ 214 0
34 4C 46.23 QSO 11 43 39.600 +46 21 20.44   14.9       ~ 61 1
35 ACO 1361 ClG 11 43 45.85 +46 20 51.8           ~ 92 0
36 ACO 1413 ClG 11 55 12.87 +23 23 46.9           ~ 430 0
37 MCG+04-28-097 BiC 11 55 17.985 +23 24 17.72   19.5       ~ 26 1
38 M 87 AGN 12 30 49.42338414 +12 23 28.0436859 10.16 9.59 8.63   7.49 ~ 7197 3
39 HCG 62 CGG 12 53 05.6 -09 12 21           ~ 306 0
40 NGC 4761 BiC 12 53 05.6960048016 -09 12 14.579980632   13.79   11.25   ~ 86 1
41 2dFGRS TGN256Z066 BiC 12 58 41.495 -01 45 41.02   15.93   14.14   ~ 23 0
42 ACO 1650 ClG 12 58 42.0 -01 45 45           ~ 304 0
43 NGC 4874 LIN 12 59 35.7093764280 +27 57 33.293892204 13.01 13.7 11.40 12.122 11.386 ~ 783 3
44 ACO 1656 ClG 12 59 44.40 +27 54 44.9           ~ 4804 2
45 ACO 1795 ClG 13 48 50.48 +26 35 07.4           ~ 1267 0
46 Z 162-10 LIN 13 48 52.4892734448 +26 35 34.353002688   14.0       ~ 237 2
47 ACO 1835 ClG 14 01 02.07 +02 52 43.2           ~ 689 1
48 NAME SMM J14010+0252 Sy1 14 01 02.0819944848 +02 52 42.426538140   19.3       ~ 46 2
49 NGC 5778 BiC 14 54 31.4984540808 +18 38 32.499862620   15.6       ~ 65 3
50 ACO 1991 ClG 14 54 41.53 +18 38 08.4           ~ 330 1
51 2MASX J14571507+2220341 BiC 14 57 15.0998550864 +22 20 34.320909444   18.5   16.82   ~ 25 1
52 ZwCl 1455+2232 ClG 14 57 15.2 +22 20 30     18.62 20.04   ~ 294 0
53 ClG J1504-0248 ClG 15 04 07.4 -02 48 15           ~ 175 0
54 ICRF J150407.5-024816 Sy2 15 04 07.51896914 -02 48 16.6232484   18.53 18.08     ~ 53 1
55 IC 1101 rG 15 10 56.100 +05 44 41.19   15.10       ~ 155 2
56 ACO 2029 ClG 15 10 56.2 +05 44 42           ~ 943 0
57 ACO 2052 ClG 15 16 41.64 +07 01 45.5           ~ 730 1
58 UGC 9799 Sy2 15 16 44.4893939136 +07 01 17.825410740   15.19 14.17     ~ 446 3
59 MCG+05-36-022 rG 15 22 28.9069678392 +27 42 44.737810848   17.22       ~ 17 1
60 ACO 2065 ClG 15 22 29.3 +27 42 22           ~ 374 0
61 LEDA 1900245 Bla 15 32 53.780 +30 20 59.41   19.1   15.7 17.819 ~ 145 0
62 ClG J1532+3021 ClG 15 32 53.8 +30 21 00           ~ 113 0
63 LEDA 140648 BiC 16 35 49.1 +66 12 40   17.5       ~ 24 1
64 ACO 2218 ClG 16 35 54.0 +66 13 00           ~ 809 1
65 NAME Hercules A rG 16 51 07.9886687784 +04 59 35.547131472     18.25     ~ 465 1
66 BAX 252.7839+04.9926 ClG 16 51 08.2 +04 59 34           ~ 46 0
67 ACO 2244 ClG 17 02 40.33 +34 02 58.7           ~ 281 0
68 2MASXI J1702424+340336 BiC 17 02 42.4914860544 +34 03 35.831926944   14.5       ~ 36 1
69 NGC 6338 Bla 17 15 22.9752 +57 24 40.312   14.2   8   ~ 184 2
70 ClG J1720+2638 ClG 17 20 09.6 +26 37 35           ~ 255 0
71 2MASX J17201001+2637317 BiC 17 20 10.040 +26 37 32.06   20.4       ~ 32 2
72 ClG J1720+3536 ClG 17 20 16.8 +35 36 27           ~ 141 1
73 ACO 2261 ClG 17 22 26.9 +32 07 58           ~ 342 0
74 [OOP2020] Abell 2261 BCG BiC 17 22 27.185 +32 07 57.25           ~ 43 1
75 ACO 2319 ClG 19 20 45.3 +43 57 43           ~ 461 1
76 MCG+07-40-004 BiC 19 21 10.0202476008 +43 56 44.124140724   15.3       ~ 23 1
77 NAME SMM J21536+1741 BiC 21 53 36.82670 +17 41 43.7260     19.58     ~ 44 2
78 ACO 2390 ClG 21 53 37.4 +17 41 46           ~ 688 2
79 2MASX J22005255+2058087 BiC 22 00 52.5724039680 +20 58 09.369178392           ~ 10 0
80 ACO 2409 ClG 22 00 52.7 +20 58 27           ~ 84 0
81 LEDA 71390 Sy1 23 25 19.201 -12 07 27.04   15.45 15.46     ~ 178 2
82 ACO 2597 ClG 23 25 19.70 -12 07 27.7           ~ 539 0
83 IC 5338 BiC 23 36 30.6135053136 +21 08 50.535313476   15.5       ~ 89 1
84 ACO 2626 ClG 23 36 31.0 +21 09 36           ~ 247 0
85 ACO 2657 ClG 23 44 51.0 +09 08 40           ~ 269 3
86 MCG+01-60-030 BiC 23 44 57.4174372704 +09 11 35.283893712   15.6       ~ 34 0
87 ACO 2670 ClG 23 54 10.51 -10 23 06.8           ~ 352 0
88 2MASX J23541371-1025084 LIN 23 54 13.6827414192 -10 25 08.481024912   15.32       ~ 53 2

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