2008MNRAS.389..379M

Query : 2008MNRAS.389..379M

2008MNRAS.389..379M - Mon. Not. R. Astron. Soc., 389, 379-384 (2008/September-1)

Radio observations of NGC 2808 and other globular clusters: constraints on intermediate-mass black holes.

MACCARONE T.J. and SERVILLAT M.

Abstract (from CDS):

We present the results of a deep radio observation of the globular cluster NGC 2808. We show that there are no sources detected within the core of the cluster, placing constraints on both the pulsar population of the cluster and the mass of a possible intermediate-mass black hole in NGC 2808. We compare the results for this cluster with other constraints on intermediate-mass black holes derived from accretion measures. With the exception of G1 in M 31 which has previously shown radio emission, even with considerably more conservative assumptions, only the clusters with the poorest of observational constraints are consistent with falling on the MBH-σ relation. This result is interpreted in terms of the fundamental differences between galaxies and globular clusters.

Abstract Copyright: © 2008 The Authors. Journal compilation © 2008 RAS

Journal keyword(s): accretion, accretion discs - stellar dynamics - globular clusters: general - globular clusters: individual: NGC 2808 - radio continuum: general

Errata: erratum vol. 408, p. 2511 (2010)

Simbad objects: 19

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Number of rows : 19
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 NGC 104 GlC 00 24 05.359 -72 04 53.20     4.09     ~ 3917 0
2 NAME Mayall II GlC 00 32 46.5323801712 +39 34 40.504803060   14.564 13.807 13.208 12.684 ~ 389 1
3 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 12651 1
4 Cl Pal 2 GlC 04 46 05.91 +31 22 53.4   15       ~ 180 0
5 NGC 1851 GlC 05 14 06.76 -40 02 47.6           ~ 1430 0
6 ICRF J082526.8-501038 QSO 08 25 26.8673494560 -50 10 38.484054768   20.94       ~ 133 1
7 NGC 2808 GlC 09 12 03.10 -64 51 48.6           ~ 1420 0
8 NAME RZ01 2109 GlC 12 29 39.689 +07 53 32.99   21.67 20.99 20.61   ~ 26 2
9 M 60 GiP 12 43 39.9680 +11 33 09.696   10.3       ~ 1348 1
10 NGC 5139 GlC 13 26 47.28 -47 28 46.1           ~ 3427 0
11 M 80 GlC 16 17 02.41 -22 58 33.9           ~ 716 0
12 M 62 GlC 17 01 12.60 -30 06 44.5           ~ 620 0
13 NGC 6397 GlC 17 40 42.09 -53 40 27.6     5.17     ~ 1976 0
14 NGC 6440 GlC 17 48 52.67 -20 21 34.5           ~ 551 0
15 NGC 6624 GlC 18 23 40.51 -30 21 39.7           ~ 886 1
16 X Sgr X-4 LXB 18 23 40.57 -30 21 40.6   19.06 18.81     ~ 992 1
17 ICRF J193925.0-634245 Sy2 19 39 25.0245304992 -63 42 45.640373400   18.87 18.37 17.64   ~ 1228 1
18 M 15 GlC 21 29 58.33 +12 10 01.2           ~ 3140 0
19 M 30 GlC 21 40 22.12 -23 10 47.5     7.10     ~ 1049 0

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