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A Blue Tilt in the Globular Cluster System of the Milky Way-like Galaxy NGC 5170
Duncan Forbes, Lee Spitler, William Harris +4
Here we present HST/ACS imaging, in the B and I bands, of the edge-on Sb/Sc galaxy NGC 5170. Excluding the central disk region region, we detect a 142 objects with colours and size…
Diamonds on the Hat: Globular Clusters in The Sombrero Galaxy (M104)
W. E. Harris, L. R. Spitler, D. A. Forbes +1
Images from the HST ACS are used to carry out a new photometric study of the globular clusters (GCs) in M104, the Sombrero galaxy. The primary focus of our study is the characteris…
Quantifying the Coexistence of Massive Black Holes and Dense Nuclear Star Clusters
Alister W. Graham, Lee Spitler
In large spheroidal stellar systems, such as elliptical galaxies, one invariably finds a 10^6-10^9 M_Sun supermassive black hole at their centre. In contrast, within dwarf elliptic…
Globular Clusters and Satellite Galaxies: Companions to the Milky Way
Duncan A. Forbes, Pavel Kroupa, Manuel Metz +1
Our Milky Way galaxy is host to a number of companions. These companions are gravitationally bound to the Milky Way and are stellar systems in their own right. They include a popul…
Probing the 2-D kinematic structure of early-type galaxies out to 3 effective radii
Robert N. Proctor, Duncan A. Forbes, Aaron J. Romanowsky +5
We detail an innovative new technique for measuring the 2-D velocity moments (rotation velocity, velocity dispersion and Gauss-Hermite coefficients h and h) of the stellar…
An Ultra Compact Dwarf around the Sombrero galaxy (M104): the Nearest Massive UCD
George K. T. Hau, Lee R. Spitler, Duncan A. Forbes +5
We report the discovery of an Ultra Compact Dwarf (UCD) associated with the Sombrero galaxy (M104). This is the closest massive UCD known and the first spectroscopically verified m…