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- W3100977314 endingPage "033" @default.
- W3100977314 startingPage "033" @default.
- W3100977314 abstract "We present a new estimate of the mass of the Milky Way, inferred via a Bayesian approach by making use of tracers of the circular velocity in the disk plane and stars in the stellar halo, as from the publicly available galkin compilation. We use the rotation curve method to determine the dark matter distribution and total mass under different assumptions for the dark matter profile, while the total stellar mass is constrained by surface stellar density and microlensing measurements. We also include uncertainties on the baryonic morphology via Bayesian model averaging, thus converting a potential source of systematic error into a more manageable statistical uncertainty. We evaluate the robustness of our result against various possible systematics, including rotation curve data selection, uncertainty on the Sun's velocity V0, dependence on the dark matter profile assumptions, and choice of priors. We find the Milky Way's dark matter virial mass to be log10M200DM/ M⊙ = 11.92+0.06−0.05(stat)±0.28±0.27(syst) (M200DM=8.3+1.2−0.9(stat)×1011 M⊙). We also apply our framework to Gaia DR2 rotation curve data and find good statistical agreement with the above results." @default.
- W3100977314 created "2020-11-23" @default.
- W3100977314 creator A5031610025 @default.
- W3100977314 creator A5039666085 @default.
- W3100977314 creator A5049262683 @default.
- W3100977314 creator A5066444125 @default.
- W3100977314 creator A5078803125 @default.
- W3100977314 date "2020-05-18" @default.
- W3100977314 modified "2023-10-16" @default.
- W3100977314 title "A robust estimate of the Milky Way mass from rotation curve data" @default.
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