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| Paper: |
Globular Cluster Sizes and Metallicity |
| Volume: |
491, Fifty Years of Wide Field Studies in the Southern Hemisphere: Resolved Stellar Populations in the Galactic Bulge and the Magellanic Clouds |
| Page: |
128 |
| Authors: |
Sippel, A. C.; Hurley, J. R.; Madrid, J. P.; Harris, W. E. |
| Abstract: |
While it has been known for a long time that the sizes of globular clusters
within our galaxy correlate with their galactocentric distances, more recently
it has also been found that blue, metal-poor clusters are on average larger
than red, metal-rich clusters in nearby galaxies. This has generated a debate
on the origin of these size differences. Using direct N-body simulations of
globular clusters with different metallicities, we can distinguish between
structural and apparent (i.e., mass versus light) differences and find that
metallicity alone can reproduce the observed size differences. |
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