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Variable star monitoring in local group dwarf irregular galaxies

Published online by Cambridge University Press:  12 April 2016

Jan Snigula ,
Claus Gössl ,
Ulrich Hopp  and
Heinz Barwig
Jan Snigula
Affiliation:
Universitäts-Sternwarte München, Scheiner Straße 1, D 81679 München, Germany
Claus Gössl
Affiliation:
Universitäts-Sternwarte München, Scheiner Straße 1, D 81679 München, Germany
Ulrich Hopp
Affiliation:
Universitäts-Sternwarte München, Scheiner Straße 1, D 81679 München, Germany
Heinz Barwig
Affiliation:
Universitäts-Sternwarte München, Scheiner Straße 1, D 81679 München, Germany

Abstract

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Dwarf galaxies in the local group provide a unique astrophysical laboratory. Despite their proximity some of these systems still lack reliable distance determinations as well as studies of their stellar content and star formation history. We present first results of our survey of variable stars in a sample of six local group dwarf irregular galaxies. Taking the Leo A dwarf galaxy as an example we describe observational strategies and data reduction. We discuss the light curves of two newly found Cepheids and place them into the context of a previously derived P-L relation. Finally we discuss the LPV content of Leo A.

Type
Part 2. What variable stars tell us about the Local Group, including the distance scale
Information
International Astronomical Union Colloquium , Volume 193: Variable Stars in the Local Group , 2004 , pp. 70 - 74
Copyright
Copyright © Astronomical Society of the Pacific 2004

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