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For refcode 1992AJ....103.1828B:
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Copyright by American Astronomical Society. Reproduced by permission
1992AJ....103.1828B A GLOBULAR CLUSTER SYSTEM AROUND THE SUPERGIANT ELLIPTICAL NGC 3842 STEVEN T. BUTTERWORTH AND WILLIAM E. HARRIS Department of Physics and Astronomy, McMaster University, Hamilton, Ontario L85 4MI, Canada Received 4 December 1991; revised 5 February 1992 ABSTRACT NGC 3842 is a dominantly large and structurally normal supergiant elliptical galaxy within the Virgo-like cluster Abell 367. We have carried out deep B-magnitude CCD imaging in the envelope of this galaxy in a search for its globular cluster system. Our photometry shows a significant population of clusters beginning to appear for B > 24.5 and continuing to rise in numbers to the faint limit of our data at B ~26.0. The estimated total cluster population (specific frequency) is S_N_~=7-8,i.e., near the normal for Virgo-like giant ellipticals and almost a factor of two less populous than the prototypical "high-S_N_" cluster system around M87. These results suggest that galaxy size (luminosity) or morphology are not enough by themselves to produce a high-S_N_ globular cluster system. In addition, because NGC 3842 is not situated at the dynamical center of A1367, our results are consistent with the idea that central location within a rich environment is the most important single factor causing high-S_N_ systems to form.
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