Density and kinematic cusps in M54 at the heart of the sagittarius dwarf galaxy: Evidence for A 104 M BLACK HOLE?

Date

2010

Authors

Ibata, Rodrigo A
Bellazzini, M
Chapman, S. C.
Dalessandro, E
Ferraro, F. R
Irwin, M. J.
Lanzoni, B
Lewis, Geraint Francis
Mackey, Alasdair
Miocchi, P

Journal Title

Journal ISSN

Volume Title

Publisher

Institute of Physics Publishing Ltd.

Abstract

We report the detection of a stellar density cusp and a velocity dispersion increase in the center of the globular cluster M54, located at the center of the Sagittarius dwarf galaxy (Sgr). The central line-of-sight velocity dispersion is 20.2 ± 0.7 km s-

Description

Keywords

Keywords: Black hole physics; Globular clusters: individual (M54); Stellar dynamics

Citation

Source

Astrophysical Journal Letters

Type

Journal article

Book Title

Entity type

Access Statement

License Rights

Restricted until

2037-12-31