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Tidally-induced Super Star Clusters in M82

Published online by Cambridge University Press:  03 August 2017

R. de Grijs ,
R.W O'Connell  and
J.S. Gallagher III
R. de Grijs
Affiliation:
Institute of Astronomy, Univ. of Cambridge, Madingley Road, Cambridge CB3 0HA, UK
R.W O'Connell
Affiliation:
Astronomy Dept., Univ. of Virginia, P.O. Box 3818, Charlottesville, VA 22903, USA
J.S. Gallagher III
Affiliation:
Astronomy Dept., Univ. of Wisconsin, 475 N. Charter Str., Madison, WI 53706, USA

Abstract

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Using new HST imaging, we identify a large, evolved system of super star clusters in a disk region just outside the starburst core in the prototypical starburst galaxy M82, “M82 B.” This region has been suspected to be a fossil starburst site in which an intense episode of star formation occurred over 100 Myr ago, which is now confirmed by our derived age distribution. It suggests steady, continuing cluster formation at a modest rate at early times (> 2 Gyr ago), followed by a concentrated formation episode ∼ 600 Myr ago and more recent suppression of cluster formation. The peak episode coincides with independent dynamical estimates for the last tidal encounter with M81.

Type
Part 3. Super Star Clusters and Associations
Information
Symposium - International Astronomical Union , Volume 207: Extragalactic Star Clusters , 2002 , pp. 477 - 478
Copyright
Copyright © Astronomical Society of the Pacific 2002 

References

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