High Resolution Analysis of Globular Clusters in M87

Details High Resolution Analysis of Globular Clusters in M87 High Resolution Analysis of Globular Clusters in M87

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...20924401w&link_type=abstract

2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #244.01; Bulletin of the American Astronomical Society,

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Recent space based observations have allowed globular clusters to be studied in other galaxies with high precision. I present preliminary results from a study of the globular cluster system of M87, based on data from a 50 orbit HST/ACS program. This very deep data allows for the detection of faint clusters far beyond the turnover of the globular cluster luminosity function. These faint clusters provide constraints on dynamical models of globular cluster destruction, and also test recent predictions for the changes in the color distribution of dissipating clusters. The high signal to noise this data allows the structure of the clusters to be fit using PSF-convolved King model templates. By modeling the clusters in this way, I can determine estimates for the cluster concentration and tidal radius, which constrains the M87 mass profile and the cluster orbits.

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