Little Bear’s pulsating stars: Variable star census of UMi dSph Galaxy
1 Apache Point Observatory, P.O. Box 59, Sunspot, NM 88349, USA
2 New Mexico State University, Department of Astronomy, Las Cruces, NM 88001, USA
3 Brigham Young University, Provo, UT, USA
4 University of Northern Colorado, Greeley, CO, USA
5 Camosun College, Victoria, B.C., Canada
Published online: 8 September 2017
Recent observations and a photometric search for variable stars in the Ursa Minor dwarf spheroidal galaxy (UMi dSph) are presented. Our observations were taken at Apache Point Observatory in 2014 and 2016 using the 0.5m ARCSAT telescope and the West Mountain Observatory (WMO) 0.9m telescope of Brigham Young University in 2016. Previously known RR Lyrae stars in our field of view of the UMi dSph are identified, and we also catalog new variable star candidates. Tentative classifications are given for some of the new variable stars. We have conducted period searches with the data collected with the WMO telescope. Our ultimate goal is to create an updated catalog of variable stars in the UMi dSph and to compare the RR Lyrae stellar characteristics to other RR Lyrae stars found in the Local Group dSph galaxies.
© The Authors, published by EDP Sciences, 2017
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.