Other
Scientific paper
Jul 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988aj.....96..378c&link_type=abstract
Astronomical Journal (ISSN 0004-6256), vol. 96, July 1988, p. 378-387.
Other
5
Escape Velocity, F Stars, G Stars, Milky Way Galaxy, Stellar Motions, Metallicity, Radial Velocity, Southern Sky, Stellar Spectrophotometry
Scientific paper
We are conducting a search for extreme-velocity stars as a means of placing a lower limit to the local value of the Galaxy's escape velocity. We report here the results of a survey of (largely) southern hemisphere proper-motion stars: 27 metal-poor F and G stars near the South Galactic Pole; 18 stars identified by Eggen as extreme-velocity candidates; and five other field stars. We obtained radial velocities and JHK photometry for almost all the stars, and some uvby and UBV photometry. Accurate distance moduli based on B - V, b - y, V - K, and J - K color indices are presented in conjunction with reddening and metallicity estimates. Kinematical properties of the stars are reported, including U, V, and W velocities, and the velocity in the Galaxy's rest frame, VRF. Five of the program stars were found to have VRF >380 km s-1.
Carney Bruce W.
Peterson Ruth C.
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