The luminosity distribution of globular clusters in three giant Virgo ellipticals

Details The luminosity distribution of globular clusters in three giant Virgo ellipticals The luminosity distribution of globular clusters in three giant Virgo ellipticals

May 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apjs...76..115h&link_type=abstract

Astrophysical Journal Supplement Series (ISSN 0067-0049), vol. 76, May 1991, p. 115-151. Research supported by NSERC and Nationa

Astronomy and Astrophysics

Astrophysics

100

Elliptical Galaxies, Globular Clusters, Luminosity, Virgo Galactic Cluster, Astrometry, Astronomical Photometry, Galactic Evolution, Image Analysis

Scientific paper

The present CCD photometry in B for globular clusters around three of Virgo's 'normal' ellipticals (NGCs 4365, 4472, and 4649) defines the luminosity distribution of the clusters and indicates that the globular clusters in giant ellipticals follow similar luminosity distributions. A fitting of the composite Virgo globular cluster luminosity function to the Galaxy's cluster distribution yields a Virgo distance modulus estimate of 31.5 + or - 0.25. Evidence, in the form of a flattening of the radial density distribution, is noted in each galaxy for a core radius in the cluster system.

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