Beat Cepheid studies. I - Temperatures of beat Cepheids

Details Beat Cepheid studies. I - Temperatures of beat Cepheids Beat Cepheid studies. I - Temperatures of beat Cepheids

Aug 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981mnras.196..357b&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 196, Aug. 1981, p. 357-369.

Astronomy and Astrophysics

Astronomy

12

Cepheid Variables, H Alpha Line, Line Shape, Stellar Temperature, Absorption Spectra, Dwarf Stars, Temperature Measurement

Scientific paper

Effective temperatures, based on the H-alpha absorption line profile, have been obtained for 10 southern beat Cepheid variables, yielding results which are similar to those for single-mode Cepheids of comparable period. The temperatures do not fall exclusively at either edge of the Instability Strip, but rather define a narrow domain related to a predicted region of complex, possibly mixed-mode behavior. Evidence suggests that the beat Cepheids are not mode switching but rather have a pulsational status, not yet theoretically defined, where continuing mixed-mode behavior is possible.

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