623 citations · 4.2k across the 54 of their papers we have counts for
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Deep Gemini/GMOS imaging of an extremely isolated globular cluster in the Local Group
A. D. Mackey, A. M. N. Ferguson, M. J. Irwin +7
We report on deep imaging of a remote M31 globular cluster, MGC1, obtained with Gemini/GMOS. Our colour-magnitude diagram for this object extends ~5 magnitudes below the tip of the…
The remnants of galaxy formation from a panoramic survey of the region around M31
Alan W. McConnachie, Michael J. Irwin, Rodrigo A. Ibata +26
In hierarchical cosmological models, galaxies grow in mass through the continual accretion of smaller ones. The tidal disruption of these systems is expected to result in loosely b…
A spectroscopic survey of EC4, an Extended Cluster in Andromeda's halo
M. L. M. Collins, S. C. Chapman, M. Irwin +8
We present a spectroscopic survey of candidate red giant branch stars in the extended star cluster, EC4, discovered in the halo of M31 from our CFHT/MegaCam survey, overlapping the…
An HST/ACS View of the Inhomogeneous Outer Halo of M31
J. C. Richardson, A. M. N. Ferguson, A. D. Mackey +6
We present a high precision photometric view of the stellar populations in the outer halo of M31, using data taken with the Hubble Space Telescope Advanced Camera for Surveys (HST/…