Spectroscopic study of a mildly peculiar A star 68 ORI

Details Spectroscopic study of a mildly peculiar A star 68 ORI Spectroscopic study of a mildly peculiar A star 68 ORI

Nov 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991baicz..42..350b&link_type=abstract

Astronomical Institutes of Czechoslovakia, Bulletin (ISSN 0004-6248), vol. 42, Nov. 1991, p. 350-354.

Astronomy and Astrophysics

Astronomy

1

A Stars, B Stars, Peculiar Stars, Stellar Spectra, Abundance, H Gamma Line, Radial Velocity, Spectral Line Width, Ubv Spectra

Scientific paper

An analysis of high-dispersion spectra of a mildly peculiar CP star, 68 Ori, is presented. Comparison of the observed hydrogen H-gamma and H-delta line profiles resulted in T(eff) of 11,900 K, log g of 1.9 (SI), and nu sin i of 80 km/s from the Mg II 448.1 line. In contrast with an earlier 'Si' classification, a mild deficit of silicon was found. Helium and calcium are normal, and the spectral type corresponding to T(eff) is B8V.

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