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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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References

Battinelli, P., Demers, S., & Kunkel, W.E., 2006, A&A, 451, 99
Battinelli, P., & Demers, S., 2010, A&A, in press
de Blok, W.J.G., & Walter, F., 2000, ApJ, 537, L95CrossRef
Demers, S., Battinelli, P., & Kunkel, W.E., 2006, ApJ, 636, L85CrossRef
Habing, H.J., & Olofsson, H., 2003, Asymptotic Giant Branch Stars (Springer, New York 2003) 411Google Scholar
Iodice, E., Arnaboldi, M., Bournaud, F., et al., 2003, ApJ, 585, 730CrossRef
Whitelock, P.A., Menzies, J.W., Feast, M.W., et al., 2009, MNRAS, 394, 795CrossRef
Whitmore, B.C., Lucas, R.A, McElroy, D.B., et al., 1990, AJ, 100, 1489CrossRef