The local Galactic escape speed

Details The local Galactic escape speed The local Galactic escape speed

Apr 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...353..486l&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 353, April 20, 1990, p. 486-493. Research supported by NSERC.

Astronomy and Astrophysics

Astrophysics

62

Milky Way Galaxy, Radial Velocity, Stellar Motions, Astronomical Models, High Speed, Monte Carlo Method

Scientific paper

Statistical techniques for estimating the local Galactic escape speed from a uniform sample of high-velocity stars are presented for the cases of exact and uncertain observations. The former case is appropriate for high-precision radial velocities, and the latter for tangential and space velocities, which are usually derived from uncertain distances and proper motions. These two techniques have been applied to the Carney-Latham sample of high-velocity stars. It is found that the sample is too small to estimate the escape speed precisely without prior knowledge of the form of the high-velocity distribution.

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