A search for distant stars in the Milky Way Galaxy's halo and thick disk

Details A search for distant stars in the Milky Way Galaxy's halo and thick disk A search for distant stars in the Milky Way Galaxy's halo and thick disk

Sep 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990phdt........14c&link_type=abstract

Ph.D. Thesis Harvard Univ., Cambridge, MA.

Astronomy and Astrophysics

Astronomy

5

A Stars, Astronomical Photometry, Halos, Milky Way Galaxy, Stellar Motions, Stellar Spectra, Bias, Kinematics, Luminosity, Metallicity, Stellar Luminosity, Velocity Distribution

Scientific paper

Two-hundred forty-seven faint stars were observed near the North Galactic Pole. Most of these stars are distant, lying in either the Galactic halo of thick disk, and allow a study of these two populations in situ, with no kinematic of metallicity bias. For all stars spectra yield velocities, and for over half stars, Stroemgren photometry gives luminosities, distances, and metallicities. Even though it was selected with no kinematic or metallicity criteria, the sample consists predominantly of thick disk and halo stars: the velocity dispersion of the total sample is 62 km/sec.

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