2003ApJ...593..352P


Query : 2003ApJ...593..352P

2003ApJ...593..352P - Astrophys. J., 593, 352-357 (2003/August-2)

The origin of IRS 16: dynamically driven in-spiral of a dense star cluster to the Galactic Center.

PORTEGIES ZWART S.F., McMILLAN S.L.W. and GERHARD O.

Abstract (from CDS):

We use direct N-body simulations to study the in-spiral and internal evolution of dense star clusters near the Galactic center. These clusters sink toward the center owing to dynamical friction with the stellar background and may go into core collapse before being disrupted by the Galactic tidal field. If a cluster reaches core collapse before disruption, its dense core, which has become rich in massive stars, survives to reach close to the Galactic center. When it eventually dissolves, the cluster deposits a disproportionate number of massive stars in the innermost parsec of the Galactic nucleus. Comparing the spatial distribution and kinematics of the massive stars with observations of IRS 16, a group of young He I stars near the Galactic center, we argue that this association may have formed in this way.

Abstract Copyright: ∼

Journal keyword(s): Black Hole Physics - Galaxy: Center - Galaxy: Nucleus - globular clusters: individual (Arches, Quintuplet) - methods: {em N}-body simulations - Stellar Dynamics

Simbad objects: 4

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Number of rows : 4
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 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
2 GCIRS 16 Cl* 17 45 40.0 -29 00 28           ~ 387 0
3 NAME Arches Cluster Cl* 17 45 50.5 -28 49 28           ~ 792 0
4 NAME Quintuplet Cluster OpC 17 46 13.9 -28 49 48           ~ 561 0

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