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Nature of BD + 17° 4708

Cohen, Judith G. and Greenstein, Jesse L. (1970) Nature of BD + 17° 4708. Publications of the Astronomical Society of the Pacific, 82 (489). pp. 1152-1156. ISSN 0004-6280.

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Oke, Greenstein, and Gunn (1966) called the GO star BD + 17° 4708 a field horizontal-branch star. They determined its effective temperature to be 6000° K, and its surface gravity as log g = 3.0. In his study of field horizontal-branch stars, Newell (1969) found + 17° 4708 to be the reddest such star, and it occupied a critical position in his plot of 0_e vs. log g, serving to separate more clearly the groups he calls disk horizontal-branch and halo horizontal-branch stars. It is the purpose ofthis note to indicate that + 17° 4708 is a G subdwarf, possibly slightly evolved, rather than a field horizontal-branch star.

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Cohen, Judith G.0000-0002-8039-4673
Additional Information:© 1970. The Astronomical Society of the Pacific. Received June 4, 1970. We thank Professor Oke for the use of his scans, and for helpful discussion. We are grateful to Dr. Strom, Mr. Kurucz, and Dr. Peterson who wrote many of the computer programs used in this investigation. One of us (J.G.C.) gratefully acknowledges the support of a National Science Foundation traineeship.
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NSF Graduate Research FellowshipUNSPECIFIED
Issue or Number:489
Record Number:CaltechAUTHORS:20190529-103832137
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Official Citation:Judith G. Cohen and Jesse L. Greenstein 1970 PASP 82 1152
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:95855
Deposited By: George Porter
Deposited On:29 May 2019 20:56
Last Modified:03 Oct 2019 21:17

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