2013MNRAS.430L..30S

Query : 2013MNRAS.430L..30S

2013MNRAS.430L..30S - Mon. Not. R. Astron. Soc., 430, L30-L34 (2013/March-3)

Multiple stellar-mass black holes in globular clusters: theoretical confirmation.

SIPPEL A.C. and HURLEY J.R.

Abstract (from CDS):

While tens or hundreds of stellar-remnant black holes (BHs) are expected to form in globular star clusters, it is still unclear how many of those will be retained upon formation, and how many will be ejected through subsequent dynamical interactions. No such BHs have been found in any Milky Way globular cluster until the recent discovery of stellar-mass BHs in the globular cluster M22 (NGC 6656) with now an estimated population of 5-100 BHs. We present a direct N-body model of a star cluster of the same absolute and dynamical age as M22. Imposing an initial retention fraction of ~10 per cent for BHs, 16 stellar-remnant BHs are retained at a cluster age of 12 Gyr, in agreement with the estimate for M22. Of those 16 BHs, two are in a binary system with a main-sequence star each while also one pure BH binary is present. We argue that multiple BHs can be present in any Milky Way cluster with an extended core radius, such as M22 or the model presented here.

Journal keyword(s): methods: numerical - stars: kinematics and dynamics - stars: mass-loss - globular clusters: general - globular clusters: individual: M22

Simbad objects: 1

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Number of rows : 1

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	M 22	GlC	18 36 23.94	-23 54 17.1						~	1459	0

Query : 2013MNRAS.430L..30S

Basic data :

M 22 -- Globular Cluster

* (CD,GCRV,...), GlC (2013A&A,GCl), Cl* (C,[KPS2012]), X (1E)

18 36 23.94 -23 54 17.1 (Optical) [ ] D 2010AJ....140.1830G

18 33 20.82 -23 56 48.7 [ ]

009.89226 -07.55164 [ ]

9.82 -5.54 [0.01 0.01 90] C 2019MNRAS.482.5138B

V(km/s) -147.8 [0.3] / z(spectroscopic) -0.000493 [0.000001] / cz -147.76 [0.30] (Opt) A 2018MNRAS.478.1520B

0.306 [0.010] C 2021MNRAS.505.5978V

24.0 24.0 90 (Opt) D 1989Sci...246.1066D

K 1.71 [~] D 2008MNRAS.389.1924F

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`M 22`	`1E 1833.3-2357`	`GCRV 6244 E`	`[KPS2012] MWSC 2961`
`C 1833-239`	`GCl 99`	`HD 171560`
`CD-24 14516`	`GCRV 11055`	`NGC 6656`

References (1459 between 1850 and 2026) (Total 1459)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).

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Archive data at HEASARC - High-Energy Astrophysics Science Archive Research Center

Data at NED - NASA/IPAC Extragalactic Database : M 22

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CD-24 14516 HD 171560 NGC 6656

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