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Date and Time of the Query: 2019-05-26 T14:02:02 PDT
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For refcode 2013ApJ...775..102P:
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2013ApJ...775..102P The Mass of the Milky Way and M31 Using the Method of Least Action Phelps, Steven; Nusser, Adi; Desjacques, Vincent Abstract. We constrain the most likely range of masses for the Milky Way (MW) and M31 using an application of the numerical action method (NAM) that optimizes the fit to observed parameters over a large ensemble of NAM-generated solutions. Our 95% confidence level mass ranges, 1.5-4.5 x 10^12^ M_sun_ for MW and 1.5-5.5 x 10^12^ M_sun_ for M31, are consistent with the upper range of estimates from other methods and suggests that a larger proportion of the total mass becomes detectable when the peculiar motions of many nearby satellites are taken into account in the dynamical analysis. We test the method against simulated Local Group catalogs extracted from the Millennium Run to confirm that mass predictions are consistent with actual galaxy halo masses. Key words: cosmology: theory, galaxies: kinematics and dynamics, Local Group
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