Beat Cepheid studies. II - Atmospheres of beat Cepheids

Details Beat Cepheid studies. II - Atmospheres of beat Cepheids Beat Cepheid studies. II - Atmospheres of beat Cepheids

Jul 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982mnras.200..127b&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 200, July 1982, p. 127-137, 139-151.

Astronomy and Astrophysics

Astronomy

5

Atmospheric Models, Cepheid Variables, Stellar Atmospheres, Stellar Evolution, Stellar Spectra, Absorption Spectra, Abundance, H Alpha Line, Stellar Gravitation, Stellar Mass, Stellar Temperature

Scientific paper

Microturbulence and iron abundance results typical of Population I Cepheids are arrived at by a differential curve of growth analysis of the atmospheres of nine beat Cepheids. A combination of surface gravities which were deduced by reference to a grid of model atmospheres with published Wesselink radii allows the prediction of spectroscopic masses for five beat Cepheids which are close to predicted evolutionary masses. These masses are in turn similar to Population I Cepheid evolutionary masses, leading to the conclusion that beat Cepheids are spectroscopically indistinguishable from Population I Cepheids.

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