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Young Stars in the Outer Disc of NGC 6822

Published online by Cambridge University Press:  26 May 2016

W. J. G de Blok  and
F. Walter
W. J. G de Blok
Affiliation:
Dept of Physics and Astronomy, Cardiff University, 5 The Parade, Cardiff, CF24 3YB, UK
F. Walter
Affiliation:
NRAO AOC, PO Box 0, 1003 Lopezville Road, Socorro, NM 87801-0387, USA

Abstract

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We present wide-field optical imaging covering the entire neutral hydrogen disc of the Local Group dwarf galaxy NGC 6822. These observations reveal the presence of numerous young stars at large galactocentric radii. The extended distribution of young stars implies that stars do form in the outer disks of dwarf galaxies; the HI is not necessarily much more extended than the stellar population. This finding has important consequences for the chemical enrichment of the interstellar medium throughout dwarf galaxies.

Type
Part 2. Origin
Information
Symposium - International Astronomical Union , Volume 217: Recycling Intergalactic and Interslettar Matter , 2004 , pp. 168 - 169
Copyright
Copyright © Astronomical Society of the Pacific 2004 

References

de Blok, W.J.G., Walter, F. 2000, ApJ, 537, L95.CrossRefGoogle Scholar
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Weldrake, D.T.F., de Blok, W.J.G., Walter, F. 2003, MNRAS, 340, 12.CrossRefGoogle Scholar