Other
Scientific paper
Jun 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...355..410p&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 355, June 1, 1990, p. 410-415.
Other
26
Galactic Evolution, Globular Clusters, Radio Galaxies, Charge Coupled Devices, Dwarf Galaxies, Galactic Structure, Interacting Galaxies, Stellar Luminosity
Scientific paper
Deep, subarcsecond CCD imaging with the Canada-France-Hawaii Telescope has revealed the existence of a globular cluster population around the cD galaxy NGC 6166 (the central supergiant in Abell 2199, redshift about 9000 km/s). The brightest globulars appear at B about 25.2, and increase in number toward fainter magnitudes exactly as would be expected if they were intrinsically similar to those in the Virgo cluster ellipticals. The estimated specific frequency of the system is S not greater than 4, i.e., at the 'normal' level for giant ellipticals rather than at the S about 15 level characteristic of M87 and other central supergiant ellipticals studied to date. This result is consistent with the view that cD galaxies form from mergers, but argues against the formation of populous globular cluster systems from cooling flows. A population of dwarf galaxies is also identified around NGC 6166; the number density of these dwarfs is roughly consistent with that of dwarfs around the central Virgo elliptical M87.
Harris William E.
Pritchet Chris J.
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