2011MNRAS.410.1655M

Query : 2011MNRAS.410.1655M

2011MNRAS.410.1655M - Mon. Not. R. Astron. Soc., 410, 1655-1659 (2011/January-3)

A new globular cluster black hole in NGC 4472.

MACCARONE T.J., KUNDU A., ZEPF S.E. and RHODE K.L.

Abstract (from CDS):

We discuss CXOU 1229410+075744, a new black hole candidate in a globular cluster in the elliptical galaxy NGC 4472. By comparing two Chandra observations of the galaxy, we find a source that varies by at least a factor of 4, and has a peak luminosity of at least 2 {x} 1039 erg/s. As such, the source varies by significantly more than the Eddington luminosity for a single neutron star, and is a strong candidate for being a globular cluster black hole. The source's X-ray spectrum also evolves in a manner consistent with what would be expected from a single accreting stellar mass black hole. We consider the properties of the host cluster of this source and the six other strong black hole X-ray binary candidates, and find that there is suggestive evidence that black hole X-ray binary formation is favoured in bright and metal-rich clusters, just as is the case for bright X-ray sources in general.

Abstract Copyright: 2010 The Authors. Journal compilation2010 RAS

Journal keyword(s): binaries: general - stars: kinematics and dynamics - globular clusters: general

CDS comments: In Table 2 : NGC 4472A = NAME RZ01 2109 ; NGC 4472B = [SGT2004] J122940.99+075744.2 ; NGC 1399A = [SGT2004] J033831.82-352603.8 ; NGC 1399B = [DRG2004] 86:53 ; NGC 3379 Cluster = [BFK2008] 42.

Simbad objects: 15

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Number of rows : 15
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 45 GlC 00 41 43.1080448904 +41 34 20.102303784 17.059 16.665 15.727 15.140 14.63 ~ 108 0
2 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 13622 1
3 Bol 144 GlC 00 42 59.8584082992 +41 16 05.750106096 18.47 17.691 16.727 16.153 15.74 ~ 62 0
4 ESO 243-49 GiC 01 10 27.7550638752 -46 04 27.356310264 16.54 14.92   13.48   ~ 187 0
5 NGC 1399 rG 03 38 29.083 -35 27 02.67 11.05 9.74 9.59 8.12   ~ 1636 1
6 [SRH2010] 86 53 GlC 03 38 31.720 -35 30 59.20       22.02   ~ 5 0
7 [SGT2004] J033831.82-352603.8 XB* 03 38 31.82 -35 26 03.8           ~ 27 1
8 M 105 LIN 10 47 49.600 +12 34 53.87   10.56 9.76 9.12 8.18 ~ 1504 0
9 [ZGV2011] 106 LXB 10 47 52.65 +12 33 38.0           ~ 5 0
10 NAME RZ01 2109 GlC 12 29 39.689 +07 53 32.99   21.67 20.99 20.61   ~ 28 2
11 [LB2005] NGC 4472 X3 BH? 12 29 39.73 +07 53 30.6           ~ 29 2
12 CXOU J122941.0+075744 BH? 12 29 41.0 +07 57 44           ~ 5 0
13 [SGT2004] J122940.99+075744.2 GlC 12 29 41.00 +07 57 44.7     21.77   20.43 ~ 5 0
14 M 49 Sy2 12 29 46.8 +08 00 01   13.21 12.17     ~ 2174 2
15 NAME Virgo Cluster ClG 12 30 47.8 +12 23 07           ~ 7107 0

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