Globular Clusters in Mergers

Details Globular Clusters in Mergers Globular Clusters in Mergers

1995-04-13

arxiv.org/abs/astro-ph/9504044v1

Astronomy and Astrophysics

Astrophysics

uuencoded Z-compressed postscript file, 6 pages. The 6 figures can be requested from burkert@mpia-hd.mpg.de. Astron. Astrophys

Scientific paper

From spectrophotometric and chemical evolutionary modelling of interacting and merging galaxies we predict abundances of burst stars and of globular clusters (GCs) that may be formed in strong bursts. Observations of young GCs in merger remnants confirm the predicted metallicities. We investigate their formation as a result of a strong star burst with a high star formation efficiency over a large volume of the merger remnant. The evolution of GCs of various metallicities in terms of broad band colours and stellar metal indices are modeled. Comparing our results to the V-I, Mgb and Fe5270 observations of GCs in NGC 7252 largely removes the age metallicity degeneracy and allows for accurate age dating as well as for estimating the effects of self enrichment.

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