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The Dwarf Spheroidal Companions to M31: Variable Stars in Andromeda II
Barton J. Pritzl, Taft E. Armandroff, George H. Jacoby +1
(abridged) We present the results of a variable star search in Andromeda II, a dwarf spheroidal galaxy companion to M31, using HST/WFPC2 observations. Seventy-three variables were…
Properties of three gas-rich dwarfs in the Centaurus A group
M. Grossi, M. J. Disney, B. J. Pritzl +5
We present HST/WFPC2 observations (F555W, F814W) and ATCA high resolution HI maps of three gas-rich dwarf galaxies in the Centaurus A group discovered in two blind 21-cm surveys (H…
Anomalous Evolution of the Dwarf Galaxy HIPASS J1321-31
Barton J. Pritzl, Patricia M. Knezek, John S. Gallagher +6
We present HST/WFPC2 observations of the dwarf galaxy HIPASS J1321-31. This unusual galaxy lies in the direction of the Centaurus A group of galaxies, and has a color-magnitude dia…
HST Snaphot Study of Variable Stars in Globular Clusters: Inner Region of NGC 6441
Barton J. Pritzl, Horace A. Smith, Peter B. Stetson +4
[Abridged] We present the results of a Hubble Space Telescope snapshot program to survey the inner region of the globular cluster NGC 6441 for its variable stars. A total of 57 var…