2011ApJ...737...87J

Query : 2011ApJ...737...87J

2011ApJ...737...87J - Astrophys. J., 737, 87 (2011/August-3)

XMM-Newton observations of NGC 247: X-ray population and a supersoft ultraluminous X-ray source.

JIN J., FENG H., KAARET P. and ZHANG S.-N.

Abstract (from CDS):

We report on a new XMM-Newton observation of NGC 247 from 2009 December. The galaxy contains a supersoft, ultraluminous X-ray source whose spectrum consists of a thermal component with a temperature about 0.1 keV and a power-law tail with a photon index around 2.5. The thermal emission is absolutely the dominant component, contributing 96% of the total luminosity in the 0.3-10 keV band. Variability is detected at timescales of 102 s and longer with a ν–1 power spectrum. These properties are consistent with black hole binaries in the thermal state and suggest the presence of an intermediate-mass black hole of at least 600 solar masses. However, the integrated root-mean-square power is much higher than typically found in the thermal state. An alternative explanation of the emission could be a photosphere with a radius about 109 cm. A possible absorption feature around 1 keV is detected, which may be due to absorption of highly ionized winds. X-ray sources within the disk of NGC 247 have a luminosity function consistent with that found in low-mass X-ray binaries. We confirm previous results that X-rays from the quasar PHL 6625 may be absorbed by gas in NGC 247, mainly at energies below 0.3 keV.

Abstract Copyright: ∼

Journal keyword(s): accretion, accretion disks - black hole physics - galaxies: individual: NGC 247 - X-rays: binaries - X-rays: galaxies

Simbad objects: 91

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Number of rows : 91
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 XMMU J004609.2-204504 X 00 46 09.29 -20 45 04.9           ~ 1 0
2 XMMU J004617.0-204151 X 00 46 17.00 -20 41 51.8           ~ 1 0
3 XMMU J004623.0-204740 X 00 46 23.02 -20 47 40.3           ~ 1 0
4 2XMM J004628.6-205005 AGN 00 46 28.68 -20 50 04.5   22.04   20.81   ~ 2 0
5 XMMU J004631.1-203959 X 00 46 31.14 -20 39 59.1           ~ 1 0
6 XMMU J004632.1-205044 X 00 46 32.11 -20 50 44.2           ~ 1 0
7 XMMU J004633.1-205457 X 00 46 33.16 -20 54 57.3           ~ 1 0
8 2XMM J004633.8-205410 EmG 00 46 33.9649106688 -20 54 10.836423216   20.55   19.01   ~ 2 0
9 XMMU J004635.1-203529 X 00 46 35.17 -20 35 29.2           ~ 1 0
10 2XMM J004635.2-203651 AGN 00 46 35.2773260856 -20 36 51.152865912   20.61   18.82   ~ 2 0
11 XMMU J004636.2-210018 X 00 46 36.29 -21 00 18.7           ~ 1 0
12 XMMU J004638.0-203609 X 00 46 38.04 -20 36 09.6           ~ 1 0
13 XMMU J004639.6-204533 X 00 46 39.67 -20 45 33.6           ~ 1 0
14 XMMU J004642.6-204507 X 00 46 42.64 -20 45 07.5           ~ 1 0
15 XMMU J004645.8-210030 X 00 46 45.85 -21 00 30.6           ~ 1 0
16 XMMU J004646.3-204742 X 00 46 46.39 -20 47 42.7           ~ 1 0
17 XMMU J004646.9-203658 X 00 46 46.92 -20 36 58.0           ~ 1 0
18 XMMU J004647.2-203628 X 00 46 47.23 -20 36 28.1           ~ 1 0
19 2XMM J004647.6-203839 AGN 00 46 47.7441451920 -20 38 38.370304644   22.00   20.79   ~ 3 0
20 XMMU J004648.8-205247 X 00 46 48.85 -20 52 47.0           ~ 1 0
21 XMMU J004650.4-203854 X 00 46 50.47 -20 38 54.0           ~ 1 0
22 QSO B0044-2059 QSO 00 46 51.8262708456 -20 43 28.522745040   18.7 19.00     ~ 19 0
23 XMMU J004654.6-204129 X 00 46 54.63 -20 41 29.4           ~ 1 0
24 XMMU J004654.8-204100 X 00 46 54.87 -20 41 00.9           ~ 1 0
25 XMMU J004655.7-203407 X 00 46 55.74 -20 34 07.6           ~ 1 0
26 XMMU J004655.9-205248 X 00 46 55.92 -20 52 48.4           ~ 1 0
27 XMMU J004656.4-205611 X 00 46 56.43 -20 56 11.9           ~ 1 0
28 XMMU J004659.3-204538 X 00 46 59.3 -20 45 38           ~ 2 0
29 XMMU J004659.7-204227 X 00 46 59.70 -20 42 27.3           ~ 1 0
30 XMMU J004700.5-203359 X 00 47 00.55 -20 33 59.7           ~ 1 0
31 XMMU J004701.9-205450 X 00 47 01.98 -20 54 50.8           ~ 1 0
32 XMMU J004702.7-205302 X 00 47 02.79 -20 53 02.9           ~ 1 0
33 XMMU J004703.2-204545 X 00 47 03.23 -20 45 45.9           ~ 1 0
34 [LB2005] NGC 247 X7 X 00 47 03.31 -20 36 57.1           ~ 2 0
35 XMMU J004703.4-204321 X 00 47 03.4 -20 43 21           ~ 2 0
36 [LB2005] NGC 247 X5 X 00 47 03.69 -20 40 15.5           ~ 2 0
37 [LB2005] NGC 247 X2 X 00 47 04.00 -20 47 45.7           ~ 43 0
38 XMMU J004704.5-205812 X 00 47 04.57 -20 58 12.0           ~ 1 0
39 XMMU J004705.9-205239 X 00 47 05.92 -20 52 39.4           ~ 1 0
40 XMMU J004705.9-204152 X 00 47 05.94 -20 41 52.4           ~ 1 0
41 XMMU J004707.3-205749 X 00 47 07.38 -20 57 49.3           ~ 1 0
42 XMMU J004708.0-204346 X 00 47 08.01 -20 43 46.8           ~ 1 0
43 NGC 247 LSB 00 47 08.554 -20 45 37.44 10.11 9.61 9.10 8.87   ~ 480 2
44 XMMU J004709.0-205214 X 00 47 09.03 -20 52 14.7           ~ 1 0
45 XMMU J004709.1-204622 X 00 47 09.16 -20 46 22.8           ~ 1 0
46 [LB2005] NGC 247 X1 X 00 47 10.30 -20 47 10.7           ~ 4 0
47 XMMU J004710.3-204343 X 00 47 10.32 -20 43 43.9           ~ 1 0
48 XMMU J004712.4-204219 X 00 47 12.48 -20 42 19.1           ~ 1 0
49 XMMU J004712.7-203837 X 00 47 12.74 -20 38 37.0           ~ 1 0
50 XMMU J004713.7-205113 X 00 47 13.70 -20 51 13.4           ~ 1 0
51 XMMU J004715.1-204717 X 00 47 15.17 -20 47 17.3           ~ 1 0
52 XMMU J004715.9-205502 X 00 47 15.94 -20 55 02.5           ~ 1 0
53 XMMU J004716.5-204814 X 00 47 16.59 -20 48 14.4           ~ 1 0
54 XMMU J004716.6-203346 X 00 47 16.63 -20 33 46.4           ~ 1 0
55 XMMU J004717.9-205508 X 00 47 17.93 -20 55 08.6           ~ 1 0
56 XMMU J004718.5-204739 X 00 47 18.56 -20 47 39.8           ~ 1 0
57 XMMU J004719.7-205601 X 00 47 19.77 -20 56 01.3           ~ 1 0
58 XMMU J004720.3-205248 X 00 47 20.32 -20 52 48.7           ~ 1 0
59 XMMU J004721.0-204932 X 00 47 21.05 -20 49 32.3           ~ 1 0
60 XMMU J004721.4-205104 X 00 47 21.48 -20 51 04.1           ~ 1 0
61 2XMM J004725.1-205443 AGN 00 47 25.3049358696 -20 54 42.369046380       21.09   ~ 2 0
62 2XMM J004727.2-204722 AGN 00 47 27.3273445752 -20 47 23.059730256   19.66   18.06   ~ 3 0
63 XMMU J004728.7-204301 X 00 47 28.76 -20 43 01.7           ~ 1 0
64 XMMU J004730.6-205434 X 00 47 30.64 -20 54 34.0           ~ 1 0
65 RX J004732.9-251748 ULX 00 47 32.97 -25 17 50.2           ~ 35 0
66 XMMU J004733.5-204557 X 00 47 33.57 -20 45 57.5           ~ 1 0
67 XMMU J004737.4-203648 X 00 47 37.49 -20 36 48.3           ~ 1 0
68 XMMU J004740.7-204442 X 00 47 40.77 -20 44 42.5           ~ 1 0
69 XMMU J004741.8-205231 X 00 47 41.84 -20 52 31.5           ~ 1 0
70 XMMU J004743.4-204941 X 00 47 43.49 -20 49 41.4           ~ 1 0
71 XMMU J004744.5-205321 X 00 47 44.53 -20 53 21.2           ~ 1 0
72 XMMU J004752.1-204053 X 00 47 52.19 -20 40 53.9           ~ 1 0
73 XMMU J004753.5-205435 X 00 47 53.55 -20 54 35.3           ~ 1 0
74 XMMU J004759.1-205201 X 00 47 59.19 -20 52 01.2           ~ 1 0
75 XMMU J004808.3-204553 X 00 48 08.39 -20 45 53.3           ~ 1 0
76 XMMU J004810.7-204818 X 00 48 10.75 -20 48 18.5           ~ 1 0
77 XMMU J004812.3-204755 X 00 48 12.30 -20 47 55.6           ~ 1 0
78 NAME Scl Group GrG 01 00 06 -33 44.2           ~ 526 0
79 RX J031820.3-662911 UX? 03 18 20.00 -66 29 10.9           ~ 229 1
80 RX J0333.5-3609 ULX 03 33 34.60 -36 09 35.0           ~ 20 0
81 [SST2011] J034555.61+680455.3 ULX 03 45 55.612 +68 04 55.29           ~ 176 1
82 NAME M81-ULS1 ULX 09 55 42.146 +69 03 36.51     21.67     ~ 33 0
83 CXOU J095546.5+694040 HXB 09 55 46.45 +69 40 40.3           ~ 17 1
84 2CXO J095550.1+694046 HXB 09 55 50.12 +69 40 46.4           ~ 294 1
85 [ZFR2002] 13 HXB 12 01 51.62 -18 52 31.9           ~ 14 0
86 [CHP2004] J124216.0+323250 X 12 42 16.0 +32 32 50           ~ 14 0
87 Suzaku J1305-4931 X 13 05.0 -49 31           ~ 6 0
88 [FK2005] 23 ULX 13 29 38.62 +58 25 05.6           ~ 134 2
89 [JRW2005b] 122 UX? 14 03 32.38 +54 21 03.0   21.13       ~ 120 0
90 QSO B1725-142 QSO 17 28 19.7893499760 -14 15 55.854918288   14.69 14.03 13.7   ~ 362 0
91 NAME NGC 6946 SNR SNR 20 35 00.74 +60 11 30.6           ~ 117 0

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