2016ApJ...833..252A

Query : 2016ApJ...833..252A

2016ApJ...833..252A - Astrophys. J., 833, 252-252 (2016/December-3)

Investigating the mass segregation process in globular clusters with blue straggler stars: the impact of dark remnants.

ALESSANDRINI E., LANZONI B., FERRARO F.R., MIOCCHI P. and VESPERINI E.

Abstract (from CDS):

We present the results of a set of N-body simulations aimed at exploring how the process of mass segregation (as traced by the spatial distribution of blue straggler stars, BSSs) is affected by the presence of a population of heavy dark remnants (as neutron stars and black holes (BHs)). To this end, clusters characterized by different initial concentrations and different fractions of dark remnants have been modeled. We find that an increasing fraction of stellar-mass BHs significantly delay the mass segregation of BSSs and the visible stellar component. In order to trace the evolution of BSS segregation, we introduce a new parameter (A⁺), which can be easily measured when the cumulative radial distribution of these stars and a reference population are available. Our simulations show that A⁺ might also be used as an approximate indicator of the time remaining to the core collapse of the visible component.

Journal keyword(s): blue stragglers - globular clusters: general - methods: numerical - stars: kinematics and dynamics - stars: kinematics and dynamics

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	NGC 6101	GlC	16 25 48.12	-72 12 07.9						~	337	0

Query : 2016ApJ...833..252A

Basic data :

NGC 6101 -- Globular Cluster

GlC (2013A&A,GCl), Cl* (C,[KPS2012])

16 25 48.12 -72 12 07.9 (Optical) [ ] D 2010AJ....140.1830G

16 20 05.18 -72 05 15.8 [ ]

317.74610 -15.82483 [ ]

1.76 -0.22 [0.01 0.01 90] C 2019MNRAS.482.5138B

V(km/s) 366.33 [0.32] / z(~) 0.001223 [0.000001] / cz 366.55 [0.32] (Opt) A 2019MNRAS.482.5138B

0.084 [0.011] C 2021MNRAS.505.5978V

10.7 10.7 90 (Opt) D 1989Sci...246.1066D

g (AB) 10.171 [0.032] C 2014MNRAS.437.1725V

r (AB) 9.736 [0.045] C 2014MNRAS.437.1725V

i (AB) 9.460 [0.044] C 2014MNRAS.437.1725V

z (AB) 9.301 [0.046] C 2014MNRAS.437.1725V

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NGC 6101 C 1620-720 GCl 40 [KPS2012] MWSC 2404

References (337 between 1850 and 2026) (Total 337)
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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