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

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; Varghese, A


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-

CollectionsANU Research Publications
Date published: 2010
Type: Journal article
Source: Astrophysical Journal Letters
DOI: 10.1088/0004-637X/699/2/L169


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