Tanvir, N. R., A. D. Mackey, A. M. N. Ferguson, A. P. Huxor, et al. 2012. "The structure of star clusters in the outer halo of M31." Monthly Notices of the Royal Astronomical Society 422:162.
We present a structural analysis of halo star clusters in M31 based on deep Hubble Space Telescope (HST) Advanced Camera for Surveys (ACS) imaging. The clusters in our sample span a range in galactocentric projected distance ...