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Evidence Against Dark Matter Halos Surrounding the Globular Clusters MGC1 and NGC 2419
Dark Matter Halos Surrounding the Globular Clusters MGC1 NGC 2419
2011/1/11
The conjecture that the ancient globular clusters (GCs) formed at the center of their own dark matter halos was first proposed by Peebles (1984), and has recently been revived to explain the puzzling ...
NGC 2419 -- Another Remnant of Accretion by the Milky Way
Galaxy Astrophysics (astro-ph.GA) Solar and Stellar Astrophysics (astro-ph.SR)
2010/12/22
We isolate a sample of 43 upper RGB stars in the extreme outer halo Galactic globular cluster NGC 2419 from two Keck/DEIMOS slitmasks. The probability that there is more than one contaminating halo fi...