Structure of the globular clusters in the Fornax dwarf elliptical galaxy

Details Structure of the globular clusters in the Fornax dwarf elliptical galaxy Structure of the globular clusters in the Fornax dwarf elliptical galaxy

May 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994aj....107.1737r&link_type=abstract

The Astronomical Journal, vol. 107, no. 5, p. 1737-1744

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15

Astronomical Photometry, Dwarf Galaxies, Elliptical Galaxies, Galactic Structure, Globular Clusters, Radial Distribution, Stellar Luminosity, Charge Coupled Devices, Data Reduction, Optical Filters, Telescopes

Scientific paper

We have measured the radial light profiles of the five brighter clusters in the Fornax dwarf elliptical galaxy. We find that the clusters fall into two structural groups. Hodge clusters Nos. 1 and 2 have similar core radii which are twice the core radii of clusters Nos. 3, 4, and 5. Clusters Nos. 1 and 2 appear to fit truncated King models. Clusters Nos. 3, 4, and 5 do not fit the King models but show an extended halo structure with no evidence of tidal truncation. We conjecture that clusters Nos. 1 and 2 have interacted dynamically with each other while the other clusters have had no such interaction over their lifetime.

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