HD 112481 and HD 145794, two Beta Cephei stars

Details HD 112481 and HD 145794, two Beta Cephei stars HD 112481 and HD 145794, two Beta Cephei stars

Jan 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...208..129w&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 208, no. 1-2, Jan. 1989, p. 129-134.

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Cepheid Variables, Stellar Luminosity, Stellar Oscillations, B Stars, Computational Astrophysics, Stellar Magnitude, Stellar Physics

Scientific paper

The southern early-B stars HD 112481 and HD 145794 are recognized as Beta Cephei variables, with pulsation periods of 0.25454 and 0.15991 days, respectively. In both stars small-amplitude secondary oscillations are observed. HD 145794 is one of the most luminous Beta Cephei stars known no far, while HD 112481 joins the Beta Cephei stars in NGC 6231 at the low-luminosity blue edge of the instability strip. The long period of HD 112481, however, is unusual and may indicate the first evidence for Beta Cephei-like pulsation in g-modes.

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