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NGC 6822: SFH of its Intermediate-Age Population

Published online by Cambridge University Press:  11 July 2011

M. Koleva ,
Ph. Prugniel ,
I. Vauglin ,
S. Demers  and
P. Battinelli
S. Demers
Affiliation:
Université de Montréal
P. Battinelli
Affiliation:
INAF, OAR
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Abstract

We have monitored, during four years, a 32′× 32′ area of the Local Group dwarf galaxy NGC 6822. Observations lead to the discovery of 30 Miras and 24 semi-regular and irregular variables. When relating the periods of Miras to their age, we find a continuous star formation during the last 3 Gyr. This result is basically consistent with the hypothesis that the intermediate-age population of NGC 6822 was born following the “polar ring” formation.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 48: CRAL-2010 A Universe of Dwarf Galaxies , 2011 , pp. 63 - 64
Copyright
© EAS, EDP Sciences, 2011

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