'Normal' main sequence AO stars of low rotational velocity

Details 'Normal' main sequence AO stars of low rotational velocity 'Normal' main sequence AO stars of low rotational velocity

Jan 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...209..233r&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 209, no. 1-2, Jan. 1989, p. 233-243.

Astronomy and Astrophysics

Astrophysics

16

A Stars, Main Sequence Stars, O Stars, Stellar Composition, Stellar Rotation, Line Spectra, Periodic Variations, Stellar Spectra

Scientific paper

A set of v sin i values has been derived in a homogeneous way for all the northern unevolved AO stars which are listed in the Bright Star Catalogue and which are known to rotate more slowly than 40 km/s. The method used for the v sin i measurement employs the FFT algorithm and is designed to make the best use possible of line profiles obtained from photographic spectrograms. It is interesting to notice that, from a first glance analysis of the spectra obtained, the suspicion arises that AO single stars with atmospheric solar composition are very rare or even nonexistent among slow rotators (v sin i of less than 15 km/s).

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