2005ApJ...632.1042G

Query : 2005ApJ...632.1042G

2005ApJ...632.1042G - Astrophys. J., 632, 1042-1047 (2005/October-3)

A possible detection of M31* with Chandra.

GARCIA M.R., WILLIAMS B.F., YUAN F., KONG A.K.H., PRIMINI F.A., BARMBY P., KAARET P. and MURRAY S.S.

Abstract (from CDS):

Two independent sets of Chandra and HST images of the nuclear region of M31 allow registration of X-ray and optical images to ∼0".1. This registration shows that none of the bright (∼1037 ergs/s) X-ray sources near the nucleus is coincident with the central supermassive black hole, M31*. A 50 ks Chandra HRC image shows 2.5 σ evidence for a faint (∼1036 ergs/s) discrete source that is consistent with the position of M31*. The Bondi radius of M31* is 0".9, making it one of the few supermassive black holes with a resolvable accretion flow. This large radius and the previous detections of diffuse X-ray-emitting gas in the nuclear region make M31* one of the most secure cases for a radiatively inefficient accretion flow and place some of the most severe constraints on the radiative processes in such a flow.

Abstract Copyright: ∼

Journal keyword(s): Accretion, Accretion Disks - Black Hole Physics - Galaxies: Individual: Messier Number: M31 - Galaxies: Nuclei

CDS comments: Fig.1, 2: mita 213 = [KGP2002] r1-32, N1 = [KGP2002] r1-10, SSS = [KGP2002] r1-9

Simbad objects: 27

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Number of rows : 27
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 Bol 124 GlC 00 42 41.43 +41 15 23.9 16.153 15.589 14.73 14.060 13.74 ~ 68 0
2 M 32 GiG 00 42 41.82480 +40 51 54.6120 9.51 9.03 8.08     ~ 2236 2
3 2XMM J004242.1+411607 XB* 00 42 42.17 +41 16 08.3           ~ 17 0
4 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 13622 1
5 NAME M31* Rad 00 42 44.33 +41 16 08.4           ~ 49 0
6 NAME P2B Cluster PoG 00 42 44.34 +41 16 08.5           ~ 42 0
7 [K2002] J004244.35+411608.9 X 00 42 44.351 +41 16 08.90           ~ 9 0
8 [O2006] QSS 8 X 00 42 44.365 +41 16 07.65           ~ 9 0
9 [LFG93] P1 PoG 00 42 44.37 +41 16 08.9           ~ 40 0
10 NAME PB-in7 GlC 00 42 46.0811940504 +41 17 36.209244228 20.30 18.975 18.093 17.560 17.48 ~ 29 0
11 NGC 821 AG? 02 08 21.1358498040 +10 59 41.832436704   12.210 11.310 10.739 9.744 ~ 592 0
12 NGC 1269 EmG 03 17 18.5785534752 -41 06 28.628735184 9.85 9.83 8.81 8.72   ~ 445 1
13 NGC 1316 rG 03 22 41.789 -37 12 29.52 9.81 9.15 8.53 7.66   ~ 1491 1
14 NGC 1399 rG 03 38 29.083 -35 27 02.67 11.05 9.74 9.59 8.12   ~ 1636 1
15 NGC 1553 GiP 04 16 10.4697802536 -55 46 48.072797400 10.76 10.10 9.40 8.74   ~ 395 2
16 NGC 4261 LIN 12 19 23.2160630 +05 49 29.700024   13.92 12.87     ~ 1290 0
17 NGC 4438 LIN 12 27 45.6705493536 +13 00 31.708096380 11.37 11.02 10.17     ~ 668 2
18 M 49 Sy2 12 29 46.8 +08 00 01   13.21 12.17     ~ 2174 2
19 M 87 AGN 12 30 49.42338414 +12 23 28.0436859 10.16 9.59 8.63   7.49 ~ 7815 3
20 M 104 LIN 12 39 59.43185902 -11 37 22.9961800 9.51 9.55 8.00 8.05   ~ 1465 2
21 NGC 4636 LIN 12 42 49.8333280080 +02 41 15.951929028   12.62 11.84     ~ 1156 1
22 M 60 GiC 12 43 39.9708251934 +11 33 09.688174067   10.3       ~ 1395 1
23 NGC 4697 GiG 12 48 35.8981498824 -05 48 02.482374564   10.97   9.83   ~ 895 0
24 NAME Centaurus A BLL 13 25 27.61521044 -43 01 08.8050291   8.18 6.84 6.66   ~ 4774 3
25 IC 4296 rG 13 36 39.03253319 -33 57 57.0730368   11.52 12.99 10.00 10.79 ~ 520 2
26 NAME Sgr A* X 17 45 40.03599 -29 00 28.1699           ~ 4970 3
27 IC 1459 rG 22 57 10.60682195 -36 27 43.9966421   10.96 11.85 9.34 10.3 ~ 652 2

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