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The Dwarf Spheroidal Companions to M31: Variable Stars in Andromeda II

Pritzl, Barton J; Armandroff, Taft E; Jacoby, George H; Da Costa, Gary


We present the results of a variable star search in Andromeda II, a dwarf spheroidal galaxy companion to M31, using Hubble Space Telescope Wide Field Planetary Camera 2 observations. Seventy-three variables were found, one of which is an anomalous Cepheid while the others are RR Lyrae stars. The anomalous Cepheid has properties consistent with those found in other dwarf spheroidal galaxies. For the RR Lyrae stars, the mean periods are 0.571 and 0.363 days for the fundamental mode and...[Show more]

CollectionsANU Research Publications
Date published: 2004
Type: Journal article
Source: Astronomical Journal


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