Title:  Viewing the Outskirts of Nearby Galaxies with Subaru and Gemini

Authors: Annette Ferguson, Mike Barker & Dougal Mackey (IfA, Edinburgh)

Abstract: The properties of resolved stellar populations (field stars,
star clusters) in galaxy halos and outer disks hold key clues to the
nature of the galaxy assembly process. Over the last few years, we
have been using Subaru/Suprime-Cam and Gemini/GMOS to study the remote
parts of spiral galaxies within and beyond the Local Group.  I will
present results from our deep wide-field imagery of M81 and NGC4244
with Suprime-Cam which has probed these systems to very faint flux
levels (V? 28 magnitudes per square arcsec) and resulted in the
detection of previously-unknown structural components. I will also
present the first results from a GMOS imaging study of star clusters
in the far outer halo of M31, including the most remote globular
cluster currently known in the Local Group.
ains
nearly isotropic, although the material is not optically thin at these
wavelengths.  We find some luminosity dependence in the X-ray/MIR
correlation, which may be a consequence of contamination by dust
emission associated with star formation, even on these small scales.

Ns ranges 10^10-12