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Three newly discovered globular clusters in NGC 6822
Avon Huxor, Annette Ferguson, Jovan Veljanoski +2
We present three newly discovered globular clusters (GCs) in the Local Group dwarf irregular NGC 6822. Two are luminous and compact, while the third is a very low luminosity diffus…
Young accreted globular clusters in the outer halo of M31
A. D. Mackey, A. P. Huxor, A. M. N. Ferguson +6
We report on Gemini/GMOS observations of two newly discovered globular clusters in the outskirts of M31. These objects, PAndAS-7 and PAndAS-8, lie at a galactocentric radius of ~87…
The structure of star clusters in the outer halo of M31
N. R. Tanvir, A. D. Mackey, A. M. N. Ferguson +11
We present a structural analysis of halo star clusters in M31 based on deep Hubble Space Telescope (HST) Advanced Camera for Surveys (ACS) imaging. The clusters in our sample span…
Identifying Blue Horizontal Branch Stars Using the z Filter
John J. Vickers, Eva K. Grebel, Avon P. Huxor
In this paper we present a new method for selecting blue horizontal branch (BHB) candidates based on color-color photometry. We make use of the Sloan Digital Sky Survey z band as a…