Previous abstract Next abstract

Session 64 - Globular Clusters.
Oral session, Tuesday, January 14
Piers 2/3,

[64.06] Globular cluster populations of Hickson compact groups

W. A. Barkhouse (U. Toronto), M. J. West (Saint Mary's U.), G. Bothun (U.Oregon)

We present deep V and R band CCD photometry of the globular cluster systems of Hickson compact group galaxy 22a (NGC 1199) and 90c (NGC 7173), taken with the European Southern Observatory's New Technology Telescope (NTT). Globular cluster populations were detected in both galaxies, with HCG 22a having a specific frequency of S_N\sim 2 and HCG 90c having a value of S_N\sim 4. Both values of specific frequency are consistent with the average value found for field ellipticals. These results give rise to two possible scenrios for globular cluster formation in these galaxies; a) globular clusters formed during the time when their parent galaxy was simply a 'field` galaxy, or b) mergers are not important in the formation of globular clusters in Hickson compact groups (Hickson compact groups are expected to have high merger rates due to their large densities and low velocity dispersions).


If you would like more information about this abstract, please follow the link to www.astro.utoronto.ca/~barkhous. This link was provided by the author. When you follow it, you will leave the the Web space for this meeting; to return, you should use the Back button on your browser.

The author(s) of this abstract have provided an email address for comments about the abstract: barkhous@astro.utoronto.ca

Program listing for Tuesday