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
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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-
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Keywords
Keywords: Black hole physics; Globular clusters: individual (M54); Stellar dynamics
Citation
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Source
Astrophysical Journal Letters
Type
Journal article
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Restricted until
2037-12-31
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