Variable Stars in the Fornax Dwarf Galaxy

2001/10/25 by D. Bersier, P. R. Wood · 10 citations
Engineering · Physics and Astronomy · #Astronomy and Astrophysical Research #Space Technology and Applications #Stellar, planetary, and galactic studies #astro-ph

paper · pdf · doi:10.1086/338315

To appear in AJ, full resolution figures avilable at http://cfa-www.harvard.edu/~dbersier/

arxiv created 2001/10/25 · openalex publication_date 2002/02/01 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/31

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.

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• Optical Spectropolarimetry of the GRB 020813 Afterglow
• The Progenitors of Dwarf Spheroidal Galaxies
• RR Lyrae and Short-Period Variable Stars in the Dwarf Irregular Galaxy NGC 6822
• Cool carbon stars in the halo: A new survey based on 2MASS
• Near-infrared observations of the Fornax dwarf galaxy
• The DART imaging and CaT survey of the Fornax dwarf spheroidal galaxy
• Synthetic properties of bright metal-poor variables
• Updated pulsation models for anomalous Cepheids
• The Araucaria Project: The Distance to the Fornax Dwarf Galaxy from Near-infrared Photometry of RR Lyrae Stars*
• RR Lyrae stars in four globular clusters in the Fornax dwarf galaxy