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Density Variations in the NW Star Stream of M31
(2011-02-17)
The Pan Andromeda Archeological Survey (PAndAS) CFHT Megaprime survey of the M31-M33 system has found a star stream which extends about 120 kpc NW from the center of M31. The great length of the stream, and the likelihood ...
PAndAS' progeny: extending the M31 dwarf galaxy cabal
(2011-02-14)
We present the discovery of five new dwarf galaxies, Andromeda XXIII-XXVII, located in the outer halo of M31. These galaxies were found in the second year of data from the Pan-Andromeda Archaeological Survey (PAndAS) of ...
Polytropic model fits to the globular cluster NGC 2419 in Modified Newtonian Dynamics
(2011-10-18)
We present an analysis of the globular cluster NGC 2419, using a polytropic model in Modified Newtonian Dynamics (MOND) to reproduce recently published high quality data of the structure and kinematics of the system. We ...