The Closest View of a Dwarf Galaxy: New Evidence on the Nature of the Canis Major over-density

David Martinez-Delgado, David J. Butler, Hans-Walter Rix +4

We present a first deep colour-magnitude diagram of the putative central region (0.5 deg x 0.5 deg) of the Canis Major stellar over-density (l,b)=(240,-8) found by Martin et al. (2…