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Global Properties of M31's Stellar Halo from the SPLASH Survey. I. Surface Brightness Profile
Karoline M. Gilbert, Puragra Guhathakurta, Rachael L. Beaton +10
We present the surface brightness profile of M31's stellar halo out to a projected radius of 175 kpc. The surface brightness estimates are based on confirmed samples of M31 red gia…
The Space Motion of Leo I: Hubble Space Telescope Proper Motion and Implied Orbit
Sangmo Tony Sohn, Gurtina Besla, Roeland P. van der Marel +3
We present the first absolute proper motion measurement of Leo I, based on two epochs of HST ACS/WFC images separated by ~5 years. The average shift of Leo I stars with respect to…
Vertical density waves in the Milky Way disc induced by the Sagittarius Dwarf Galaxy
Facundo A. Gómez, Ivan Minchev, Brian W. O'Shea +3
Recently, Widrow and collaborators announced the discovery of vertical density waves in the Milky Way disk. Here we investigate a scenario where these waves were induced by the Sag…
The SPLASH Survey: Kinematics of Andromeda's Inner Spheroid
Claire E. Dorman, Puragra Guhathakurta, Mark A. Fardal +12
The combination of large size, high stellar density, high metallicity, and Sersic surface brightness profile of the spheroidal component of the Andromeda galaxy (M31) within R_proj…
Signatures of minor mergers in the Milky Way disc I: The SEGUE stellar sample
Facundo A. Gómez, Ivan Minchev, Brian W. O'Shea +6
It is now known that minor mergers are capable of creating structure in the phase-space distribution of their host galaxy's disc. In order to search for such imprints in the Milky…