Are the compact star clusters in M82 evolving towards globular clusters?

Details Are the compact star clusters in M82 evolving towards globular clusters? Are the compact star clusters in M82 evolving towards globular clusters?

2007-10-11

arxiv.org/abs/0710.2145v1

Astronomy and Astrophysics

Astrophysics

To appear in proceedings of the Puerto Vallarta Conference on ``New Quests in Stellar Astrophysics II: Ultraviolet Properties

Scientific paper

Recent HST/ACS images of M82 covering the entire galaxy have been used to detect star clusters. The galaxy is known to contain a young population (age < 10 Myr) in its starburst nucleus, surrounded by a post-starburst disk of age < 1 Gyr. We detect more than 650 star clusters in this galaxy, nearly 400 of them in the post-starburst disk. These data have been used to derive the luminosity, mass and size functions separately for the young nuclear, and intermediate-age disk clusters. In this contribution, we discuss the evolutionary status of these clusters, especially, on the chances of some of these clusters surviving to become old globular clusters.

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