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Asymptotic Giant Branch Variables in NGC 6822

Published online by Cambridge University Press:  05 December 2011

Patricia A. Whitelock
Patricia A. Whitelock*
Affiliation:
South African Astronomical Observatory, PO Box 9, Observatory, 7935, South Africa and Astrophysics, Cosmology and Gravity Centre, Astronomy Department, University of Cape Town, South Africa. email: paw@saao.ac.za
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Abstract

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Multi-epoch JHKS photometry is used to identify large amplitude variables and to study the AGB population of NGC 6822. 50 Mira variables, ranging in period from 128 to 998 days, have been identified. The majority of these are around 1 to 4 Gyr old, but a significantly younger component is also identified.

Keywords

stars: AGB and post-AGBstars: carbonstars: variables: othergalaxies: individual: NGC 6822galaxies: stellar content(galaxies:) Local Group
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 6 , Symposium S277: Tracing the Ancestry of Galaxies (on the land of our ancestors) , December 2010 , pp. 337 - 340
Copyright
Copyright © International Astronomical Union 2011

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