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The Haunted Halos of Andromeda and Triangulum: A panorama of galaxy formation in action
(2007-12-20)
We present a deep photometric survey of M31, conducted with the CFHT and INT, covering the inner 50 kpc of the galaxy, the Southern quadrant out to 150 kpc, and extending to M33. This is the first systematic panoramic study ...
Taking measure of the Andromeda halo: a kinematic analysis of the giant stream surrounding M31
(2004-06)
We present a spectroscopic survey of the giant stellar stream found in the halo of the Andromeda galaxy. Taken with the DEIMOS multi-object spectrograph on the Keck2 telescope, these data display a narrow velocity dispersion ...
On the accretion origin of a vast extended stellar disk around the Andromeda galaxy
(2005-11-20)
We present the discovery of an inhomogenous, low-surface brightness, extended disk-like structure around the Andromeda galaxy (M31) based on a large kinematic survey of more than 2800 stars with the Keck/DEIMOS spectrograph. ...
The tidal trail of NGC205?
(2004-07)
Using data taken as part of the Isaac Newton Telescope Wide Field Camera (INT WFC) survey of M31, we have identified an arc-like overdensity of blue, presumably metal-poor, red giant branch stars in the north-west quadrant ...