A search for stars of very low metal abundance. I

Details A search for stars of very low metal abundance. I A search for stars of very low metal abundance. I

Oct 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985aj.....90.2089b&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 90, Oct. 1985, p. 2089-2102.

Astronomy and Astrophysics

Astronomy

211

Dwarf Stars, Giant Stars, Main Sequence Stars, Metallicity, Stellar Composition, Ubv Spectra, Abundance, Balmer Series, Bandpass Filters, Calcium, Narrowband, Potassium, Prisms, Radial Velocity, Spectral Line Width, Stellar Spectrophotometry, Subgiant Stars

Scientific paper

The authors report the first results from an objective-prism survey for stars of very low metal abundance. Low-metal candidates were chosen based on the weakness of the Ca II H and K lines, 3968 and 3933 Å. The faintest stars in the survey reach apparent magnitude B ≈ 16. Detailed spectroscopic and photometric observations are presented for about one-fourth of the objective-prism candidates. Based upon these data, and upon calibrating observations of field and globular cluster stars, the authors present a list of 134 stars that are likely to have metallicities [Fe/H] ≤ -2.0. Finally, they discuss the surface gravities, metallicities, CH strengths, and kinematics of the stars in the metal-poor sample.

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