Elemental abundances of the field horizontal-branch stars. II

Details Elemental abundances of the field horizontal-branch stars. II Elemental abundances of the field horizontal-branch stars. II

Feb 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992mnras.254..539a&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 254, Feb. 1, 1992, p. 539-544. Research supported by Th

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11

Abundance, Horizontal Branch Stars, Stellar Atmospheres, Stellar Spectra, A Stars, B Stars, Least Squares Method, Magnetohydrodynamic Turbulence, Spectral Line Width

Scientific paper

Studies of one of three 55-A 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-percent systematic difference in equivalent widths compared to coadded 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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