Mass models of the Milky Way

@article{McMillan2011MassMO,
  title={Mass models of the Milky Way},
  author={Paul J McMillan},
  journal={Monthly Notices of the Royal Astronomical Society},
  year={2011},
  volume={414},
  pages={2446-2457}
}
  • P. McMillan
  • Published 2011
  • Physics
  • Monthly Notices of the Royal Astronomical Society
We present a simple method for fitting parametrized mass models of the Milky Way to observational constraints. We take a Bayesian approach which allows us to take into account input from photometric and kinematic data, and expectations from theoretical modelling. This provides us with a best-fitting model, which is a suitable starting point for dynamical modelling. We also determine a probability density function on the properties of the model, which demonstrates that the mass distribution of… Expand

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References

SHOWING 1-10 OF 62 REFERENCES
Mass models of the Milky Way
TLDR
The proposition that flat rotation curves arise because galaxies have physically distinct haloes rather than outwards-increasing mass-to-light ratios is called into question. Expand
ΛCDM-based Models for the Milky Way and M31. I. Dynamical Models
We apply standard disk formation theory with adiabatic contraction within cuspy halo models predicted by the standard cold dark matter (?CDM) cosmology. The resulting models are confronted with theExpand
The present and future mass of the Milky Way halo
A simple model for the Milky Way halo is presented. It has a flat rotation curve in the inner regions, but the density falls off sharply beyond an outer edge. This truncated, flat rotation curve (TF)Expand
The uncertainty in Galactic parameters
We reanalyse the measurements of parallax, proper motion and line-of-sight velocity for 18 masers in high-mass star-forming regions presented by Reid et al. We use a likelihood analysis toExpand
Dynamical Blueprints for Galaxies
We present an axisymmetric, equilibrium model for late-type galaxies which consists of an exponential disk, a Sersic bulge, and a cuspy dark halo. The model is specified by a phase-space distributionExpand
Masses for the Local Group and the Milky Way
We use the very large Millennium Simulation of the concordance Lambda cold dark matter cosmogony to calibrate the bias and error distribution of Timing Argument estimators of the masses of the LocalExpand
The Accretion Origin of the Milky Way’s Stellar Halo
We have used data from the Sloan Digital Sky Survey (SDSS) Data Release 5 to explore the overall structure and substructure of the stellar halo of the Milky Way using ~4 million color-selectedExpand
The Vertical Distribution and Kinematics of H i and Mass Models of the Galactic Disk
We present full modeling of tangent point emission of HI as seen in the 21 cm transition in the inner Galaxy ($R \simeq 3-8 \kpc$). The model used takes into account emission from a large path lengthExpand
MEASURING DISTANCE AND PROPERTIES OF THE MILKY WAY'S CENTRAL SUPERMASSIVE BLACK HOLE WITH STELLAR ORBITS
We report new precision measurements of the properties of our Galaxy's supermassive black hole. Based on astrometric (1995-2007) and radial velocity (RV; 2000-2007) measurements from the W. M. KeckExpand
Distribution functions for the Milky Way
Analytic distribution functions (DFs) for the Galactic disc are discussed. The DFs depend on action variables and their predictions for observable quantities are explored under the assumption thatExpand
...
1
2
3
4
5
...