1998•arXiv (Cornell University)Open access

The Mass and Extent of the Galactic Halo

Dennis Zaritsky

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Abstract

We review the various techniques used to constrain the Galactic halo mass profile for radii > 20 kpc with particular emphasis on identifying a self-consistent halo model and resolving the apparent discrepancies present in the literature on this subject. We collate published results and demonstrate that they are all consistent with a Galactic halo that is nearly isothermal with a characteristic velocity of 180 to 220 km/sec and an extent >~ 200 kpc.

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We review the various techniques used to constrain the Galactic halo mass profile for radii > 20 kpc with particular emphasis on identifying a self-consistent halo model and resolving the apparent discrepancies present in the literature on this subject. We collate published results and demonstrate that they are all consistent with a Galactic halo that is nearly isothermal with a characteristic velocity of 180 to 220 km/sec and an extent >~ 200 kpc.

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Available abstract

We review the various techniques used to constrain the Galactic halo mass profile for radii > 20 kpc with particular emphasis on identifying a self-consistent halo model and resolving the apparent discrepancies present in the literature on this subject. We collate published results and demonstrate that they are all consistent with a Galactic halo that is nearly isothermal with a characteristic velocity of 180 to 220 km/sec and an extent >~ 200 kpc.

Key concepts: Halo, Astrophysics, Galactic halo, Galactic corona, Physics, Halo effect, Astronomy, Galaxy

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