Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...211.5828w&link_type=abstract
American Astronomical Society, AAS Meeting #211, #58.28; Bulletin of the American Astronomical Society, Vol. 39, p.838
Astronomy and Astrophysics
Astronomy
Scientific paper
The disruption of globular clusters by dynamical evolution leaves a clear signature on the cluster luminosity function, as the lowest mass clusters lose a larger fraction of their mass per unit time than higher mass clusters. This effect has been described by theoretical models, but observations have not been able to fully constrain the form of this mass loss. We present results from a study of the globular cluster system of M87, based on a 50 orbit HST/ACS program, which provides complete data down to V 27, allowing us to measure the very faintest clusters. We present the constraints these faint clusters place on models of the cluster evolution. The high signal this data offers also allows the structure of the clusters to be fit with PSF convolved King model templates. We have done so for the brightest clusters in the sample, and compare these fits to trends observed in the Milky Way globular cluster system.
Waters Christopher Z.
Zepf Stephen
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