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A search for stars of very low metal abundance. I

Beers, T. C., Preston, G. W., Shectman, S. A.·1985·The Astronomical Journal

Abstract

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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Metadata

Authors
Beers, T. C., Preston, G. W., & Shectman, S. A.
Venue
The Astronomical Journal
Published
1985-10
Volume
90
Pages
2089
ISSN
0004-6256 (ISSN-L)
OpenAlex
W4253710164
Cited by
314
References
0
FWCI
7.08
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: A search for stars of very low metal abundance. I. https://app.cochat.ai/papers/10.1086/113917
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Beers, T. C., Preston, G. W., & Shectman, S. A. (1985). A search for stars of very low metal abundance. I. The Astronomical Journal. https://doi.org/10.1086/113917

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