Disk-Bulge-Halo Models for the Andromeda Galaxy

@article{Widrow2003DiskBulgeHaloMF,
  title={Disk-Bulge-Halo Models for the Andromeda Galaxy},
  author={Lawrence M. Widrow and Kathryn Perrett and Sherry H. Suyu Queen's University and California Institute of Technology.},
  journal={The Astrophysical Journal},
  year={2003},
  volume={588},
  pages={311-325}
}
We present a suite of semianalytic disk-bulge-halo models for the Andromeda galaxy (M31) that satisfy three fundamental conditions: (1) internal self-consistency, (2) consistency with observational data, and (3) stability of the disk against the formation of a central bar. The models are chosen from a set first constructed by Kuijken & Dubinski. We develop an algorithm to search the parameter space for this set in order to best match observations of the M31 rotation curve, inner velocity… Expand
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References

SHOWING 1-10 OF 53 REFERENCES
Nearly self-consistent disc–bulge–halo models for galaxies
We describe methods for setting up self-consistent disc-bulge-halo galaxy models. The bulge and halo distribution functions (DFs) are functions of E and L(z) only. The halo's flattening and rotationExpand
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
Profiles of dark haloes: evolution, scatter and environment
We study dark-matter halo density profiles in a high-resolution N-body simulation of aCDM cosmology. Our statistical sample contains �5000 haloes in the range 10 11 10 14 h −1 M⊙ and the resolutionExpand
Dynamical Mass Estimates for the Halo of M31 from Keck Spectroscopy
The last few months have seen the measurements of the radial velocities of all of the dwarf spheroidal companions to the Andromeda galaxy (M31) using the spectrographs (HIRES and LRIS) on the KeckExpand
The Structure of cold dark matter halos
High resolution N-body simulations show that the density profiles of dark matter halos formed in the standard CDM cosmogony can be fit accurately by scaling a simple “universal” profile. RegardlessExpand
Searching for Machos (and other Dark Matter Candidates) in a Simulated Galaxy
We conduct gravitational microlensing experiments in a galaxy taken from a cosmological N-body simulation. Hypothetical observers measure the optical depth and event rate toward hypothetical LMCs andExpand
The Kinematics and Metallicity of the M31 Globular Cluster System
With the ultimate aim of distinguishing between various models describing the formation of galaxy halos (e.g., radial or multiphase collapse and random mergers), we have completed a spectroscopicExpand
The mass of the Andromeda galaxy
ABSTRA C T This paper argues that the Milky Way galaxy is probably the largest member of the Local Group. The evidence comes from estimates of the total mass of the Andromeda galaxy (M31) derivedExpand
An Improved Mass Determination for M31 from Its Satellite Galaxies
The High-Resolution Echelle Spectrometer on the Keck I telescope has been used to measure the first radial velocities for stars belonging to the Andromeda I and III dwarf spheroidal galaxies. OurExpand
Lowered Evans models: analytic distribution functions of oblate halo potentials
We describe an analytic distribution function of a finite, oblate stellar system that is useful for the practical modelling of dark halos. The function is determined by lowering Evans's (1993)Expand
...
1
2
3
4
5
...