Sizes of Galactic Globular Clusters

Details Sizes of Galactic Globular Clusters Sizes of Galactic Globular Clusters

2012-01-17

arxiv.org/abs/1201.3597v1

Astronomy and Astrophysics

Astrophysics

Galaxy Astrophysics

Accepted for publication in The Astrophysical Journal

Scientific paper

A study is made of deviations from the mean power-law relationship between the Galactocentric distances and the half-light radii of Galactic globular clusters. Surprisingly, deviations from the mean R_h versus R_gc relationship do not appear to correlate with cluster luminosity, cluster metallicity, or horizontal branch morphology. Differences in orbit shape are found to contribute to the scatter in the R_h versus R_gc relationship of Galactic globular clusters.

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