Variable Stars in the Fornax Dwarf Galaxy
Abstract
We present a search for variable stars in the Fornax dwarf galaxy covering an area of half a square degree. We have ~30 epochs of VI data. We found and determined periods for more than 500 RR Lyrae, 17 anomalous Cepheids, and six Population II Cepheids. In addition we have 85 candidate long-period variables, the majority of which were previously unknown. We estimate that the average metal abundance of RR Lyrae stars is [Fe/H]~=-1.6 dex.
- Publication:
-
The Astronomical Journal
- Pub Date:
- February 2002
- DOI:
- 10.1086/338315
- arXiv:
- arXiv:astro-ph/0110555
- Bibcode:
- 2002AJ....123..840B
- Keywords:
-
- Cosmology: Distance Scale;
- Galaxies: Individual: Name: Fornax;
- Stars: Variables: RR Lyrae Variable;
- Stars: Variables: General;
- Astrophysics
- E-Print:
- To appear in AJ, full resolution figures avilable at http://cfa-www.harvard.edu/~dbersier/
