S316p.04 — Forming Centaurus A's High M/L Globular Clusters

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Aug 10th at 6:00 PM until 7:30 PM

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Author(s): Mia Sauda Bovill1, Thomas Hyazinth Puzia1, Massimo Ricotti2, Matthew Alan Taylor1

Institution(s): 1. PUC, 2. University of Maryland

Using a set of high resolution N-body simulations, we develop a formation model for the high M/L globular clusters recently found around Centaurus A. In our model, the high M/L clusters are not true globular clusters, but rather the stripped cores of dwarf galaxies which underwent an epoch of efficient, concentrated star formation, possibly before or during the epoch of reionization. Given the known stellar masses of these objects, their halos virialized with relatively high masses and high redshift, falling into the Centaurus A with > 109 Msolar. These criteria give us a distribution of surviving subhalos which is consistent with the number and three dimensional distribution of the high M/L clusters within 100 pc of Centaurus A.