Southern stars of high radial velocity

Details Southern stars of high radial velocity Southern stars of high radial velocity

Dec 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984aj.....89.1897s&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 89, Dec. 1984, p. 1897-1907.

Astronomy and Astrophysics

Astronomy

7

Astronomical Catalogs, Radial Velocity, Stellar Spectrophotometry, A Stars, Astrometry, K Stars, Main Sequence Stars, Metallicity, Velocity Measurement

Scientific paper

First, it has been shown that the Stock Velocity Survey is a useful source of velocity information on 8-13th mag southern stars. The particular use has been to identify stars of very large velocity. Thackeray (1975) has tabulated those galactic objects with heliocentric radial velocities over 250 km/s; his list contains 69 objects, of which 59 are stellar. The authors have found twelve more stars. Second, the slit spectra of a sample of high-velocity stars in the Stock Survey revealed several extremely metal-weak stars. Abundance analysis for these objects would be worthwhile. Finally, among the high-velocity objects are a surprising number of late B and early A stars. In most instances, these objects appear to be spectroscopically normal, main-sequence stars, but three are definite A + G spectrum binaries. High-velocity binaries are rare.

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