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The large-scale structure of the halo of the Andromeda Galaxy Part I: global stellar density, morphology and metallicity properties
Rodrigo A. Ibata, Geraint F. Lewis, Alan W. McConnachie +14
We present an analysis of the large-scale structure of the halo of the Andromeda galaxy, based on the Pan-Andromeda Archeological Survey (PAndAS), currently the most complete map o…
Perseus I: A distant satellite dwarf galaxy of Andromeda
Nicolas F. Martin, Edward F. Schlafly, Colin T. Slater +19
We present the discovery of a new dwarf galaxy, Perseus I/Andromeda XXXIII, found in the vicinity of Andromeda (M31) in stacked imaging data from the Pan-STARRS1 3π survey. Located…
The ACS LCID project. IX. Imprints of the early Universe in the radial variation of the star formation history of dwarf galaxies
Sebastian L. Hidalgo, Matteo Monelli, Antonio Aparicio +8
Based on Hubble Space Telescope observations from the Local Cosmology from Isolated Dwarfs project, we present the star formation histories, as a function of galactocentric radius,…
Lacerta I and Cassiopeia III: Two luminous and distant Andromeda satellite dwarf galaxies found in the 3π Pan-STARRS1 survey
Nicolas F. Martin, Colin T. Slater, Edward F. Schlafly +17
We report the discovery of two new dwarf galaxies, Lacerta I/Andromeda XXXI (Lac I/And XXXI) and Cassiopeia III/Andromeda XXXII (Cas III/And XXXII), in stacked Pan-STARRS1 r_P1- an…
The ACS LCID Project. VIII. The short-period Cepheids of Leo A
Edouard J. Bernard, Matteo Monelli, Carme Gallart +9
We present the results of a new search for variable stars in the Local Group dwarf galaxy Leo A, based on deep photometry from the Advanced Camera for Surveys onboard the Hubble Sp…
Kinematics of Outer Halo Globular Clusters in M31
J. Veljanoski, A. M. N. Ferguson, A. D. Mackey +12
We present the first kinematic analysis of the far outer halo globular cluster (GC) population in the Local Group galaxy M31. Our sample contains 53 objects with projected radii of…