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Published December 10, 2006 | Published
Journal Article Open

The not so extraordinary globular cluster 037-B327 in M31


A velocity dispersion has been measured for the luminous globular cluster M31 037-B327, claimed to be the most massive star cluster in the Local Group and to be a young "super star cluster" that has survived to an old age. M31 037-B327 has a mass comparable to that of M31 G1 but not significantly larger. Although near the upper end for the mass distribution of globular clusters, it is not an unprecedented extraordinary object.

Additional Information

© 2006 The American Astronomical Society. Received 2006 September 25; accepted 2006 October 24; published 2006 November 21. The entire Keck HIRES user community owes a huge debt to Jerry Nelson, Gerry Smith, Steve Vogt, and many other people who have worked to make the Keck Telescope and HIRES a reality and to operate and maintain the Keck Observatory. We are grateful to the W.M. Keck Foundation for the vision to fund the construction of the W.M. Keck Observatory. The authors wish to extend special thanks to those of Hawaiian ancestry on whose sacred mountain we are privileged to be guests. Without their generous hospitality, none of the observations presented herein would have been possible. This publication makes use of data from the Two Micron All Sky Survey, which is a joint project of the University of Massachusetts and the Infrared Processing and Analysis Center, funded by the National Aeronautics and Space Administration and the National Science Foundation. J.G.C. is grateful to NSF grant AST 05-07219 for partial support.

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