2012ApJ...749..129G


Query : 2012ApJ...749..129G

2012ApJ...749..129G - Astrophys. J., 749, 129 (2012/April-3)

A Chandra survey of supermassive black holes with dynamical mass measurements.

GULTEKIN K., CACKETT E.M., MILLER J.M., DI MATTEO T., MARKOFF S. and RICHSTONE D.O.

Abstract (from CDS):

We present Chandra observations of 12 galaxies that contain supermassive black holes (SMBHs) with dynamical mass measurements. Each galaxy was observed for 30 ks and resulted in a total of 68 point-source detections in the target galaxies including SMBH sources, ultraluminous X-ray sources (ULXs), and extragalactic X-ray binaries. Based on our fits of the X-ray spectra, we report fluxes, luminosities, Eddington ratios, and slope of the power-law spectrum. Normalized to the Eddington luminosity, the 2-10 keV band X-ray luminosities of the SMBH sources range from 10–8 to 10–6, and the power-law slopes are centered at ∼2 with a slight trend toward steeper (softer) slopes at smaller Eddington fractions, implying a change in the physical processes responsible for their emission at low accretion rates. We find 20 ULX candidates, of which 6 are likely (>90% chance) to be true ULXs. The most promising ULX candidate has an isotropic luminosity in the 0.3-10 keV band of 1.0+0.6 _- 0.3_x1040 erg/s.

Abstract Copyright:

Journal keyword(s): accretion, accretion disks - black hole physics - galaxies: general - galaxies: nuclei - X-rays: galaxies - X-rays: general

Simbad objects: 35

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Number of rows : 35
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 [FWB2009] HLX-1 ULX 01 10 28.30 -46 04 22.3     24.5 23.80   ~ 176 1
2 CXOU J031937.9-192441 UX? 03 19 37.95 -19 24 41.4           ~ 1 0
3 CXOU J031938.5-192452 UX? 03 19 38.58 -19 24 52.4           ~ 1 0
4 CXOU J031939.9-192550 UX? 03 19 39.93 -19 25 50.4           ~ 1 0
5 NGC 1300 GiP 03 19 41.0462219928 -19 24 40.187565432   11.16 10.42 9.90 10.7 ~ 490 0
6 CXOU J091222.4+350135 UX? 09 12 22.45 +35 01 35.2           ~ 1 0
7 NGC 2778 GiP 09 12 24.3741783168 +35 01 39.140496840   13.1       ~ 273 0
8 CXOU J091337.4+762811 UX? 09 13 37.45 +76 28 11.4           ~ 1 0
9 NGC 2748 GiG 09 13 43.03707 +76 28 31.2310   11.7       ~ 191 0
10 CXOU J091343.8+762835 UX? 09 13 43.80 +76 28 35.9           ~ 1 0
11 CXOU J091344.4+762829 UX? 09 13 44.42 +76 28 29.3           ~ 1 0
12 CXOU J091348.5+762902 UX? 09 13 48.52 +76 29 02.2           ~ 1 0
13 CXOU J091348.9+762828 UX? 09 13 48.99 +76 28 28.5           ~ 1 0
14 CXOU J104816.1+123658 UX? 10 48 16.15 +12 36 58.7           ~ 1 0
15 NGC 3384 GiG 10 48 16.8855574392 +12 37 45.371165844   10.0       ~ 575 1
16 CXOU J104819.4+123646 UX? 10 48 19.41 +12 36 46.0           ~ 1 0
17 CXOU J104820.8+123839 UX? 10 48 20.81 +12 38 39.4           ~ 1 0
18 2XMM J122012.5+752204 UX? 12 20 12.5 +75 22 04           ~ 1 0
19 CXOU J122016.1+752218 UX? 12 20 16.12 +75 22 18.0           ~ 1 0
20 NGC 4291 GiG 12 20 17.699 +75 22 15.47   17.0       ~ 290 1
21 CXOU J122019.8+752216 UX? 12 20 19.83 +75 22 16.2           ~ 1 0
22 NGC 4459 H2G 12 29 00.0329905416 +13 58 42.826603332   11.6       ~ 518 0
23 CXOU J122900.5+135825 UX? 12 29 00.56 +13 58 25.9           ~ 1 0
24 UGC 7658 GiG 12 30 57.7095721176 +12 16 13.316512872   11.2 11.59 12.02   ~ 220 1
25 NGC 4596 GiP 12 39 55.9544722920 +10 10 34.185047628   12.4       ~ 352 0
26 CXOU J123956.8+101053 UX? 12 39 56.83 +10 10 53.1           ~ 1 0
27 CXOU J125147.9-102719 UX? 12 51 47.92 -10 27 19.7           ~ 1 0
28 NGC 4742 GiG 12 51 48.0416784480 -10 27 17.196625800   12   11.55   ~ 216 1
29 CXOU J125148.2-102710 UX? 12 51 48.27 -10 27 10.8           ~ 1 0
30 NGC 5077 GiP 13 19 31.6697719944 -12 39 25.086455856   13.87 12.85 11.30   ~ 281 0
31 NAME Centaurus A Sy2 13 25 27.6039817176 -43 01 09.493008456   8.18 6.84 6.66   ~ 4284 3
32 CXOU J142102.7+031611 UX? 14 21 02.76 +03 16 11.6           ~ 1 0
33 NGC 5576 GiP 14 21 03.691 +03 16 15.78 12.25 11.85 10.96     ~ 315 1
34 CXOU J142105.1+031615 UX? 14 21 05.18 +03 16 15.9           ~ 1 0
35 NGC 7457 G 23 00 59.9263288440 +30 08 41.764398792   11.04 11.87     ~ 422 0

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2022.10.01-04:48:16

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