Population studies. III - Further comparison of spectroscopically and kinematically selected halo samples

Details Population studies. III - Further comparison of spectroscopically and kinematically selected halo samples Population studies. III - Further comparison of spectroscopically and kinematically selected halo samples

Aug 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986apj...307..123n&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 307, Aug. 1, 1986, p. 123-125.

Astronomy and Astrophysics

Astrophysics

13

Abundance, Stellar Composition, Stellar Motions, Eccentricity, Halos, Radial Velocity

Scientific paper

A comparison is made between the kinematically selected sample of halo stars of Eggen, Lynden-Bell, and Sandage (1962, ELS) and the more recent spectroscopically selected sample of such objects obtained by Eggen (1984) from the Michigan Spectral Types Catalogs. Data are presented on the abundances, absolute magnitudes, and kinematics of 29 halo stars, and the eccentricity distributions in the samples of ELS and Eggen are compared. The results are found to be consistent with the view that the kinematically selected sample analyzed by ELS is biased against low-abundance, low-eccentricity stars.

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