ELEMENTAL ABUNDANCES OF THE FIELD HORIZONTAL-BRANCH STARS .2.

被引:7
作者
ADELMAN, SJ
PHILIP, AGD
机构
[1] UNION UNIV UNION COLL,SCHENECTADY,NY 12308
[2] WESLEYAN UNIV,VAN VLECK OBSERV,MIDDLETOWN,CT 06457
关键词
D O I
10.1093/mnras/254.3.539
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Studies of one to three 55-angstrom regions recently obtained with a CCD at the coude feed telescope of the Kitt Peak National Observatory are used to extend the fine analyses of the field horizontal-branch (FHB) A stars HD 86986 and 130095 and to begin those of HD 74721 and 117880. The spectra of the Population I B star tau-Her and the FHB stars HD 109995 and 161817 show a 4 per cent systematic difference in equivalent widths compared to co-added spectra obtained at the Dominion Astrophysical Observatory. However, this difference is smaller than that previously found using another wavelength region. The abundances of HD 86986 are nearly identical to those of HD 109995.
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页码:539 / 544
页数:6
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