A photometric and spectroscopic study of the early-type binary AH Cephei

Details A photometric and spectroscopic study of the early-type binary AH Cephei A photometric and spectroscopic study of the early-type binary AH Cephei

Dec 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986mnras.223..513b&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 223, Dec. 1, 1986, p. 513-528.

Astronomy and Astrophysics

Astronomy

19

Astronomical Spectroscopy, Binary Stars, Cepheid Variables, Early Stars, Stellar Spectrophotometry, Ephemerides, Light Curve, Radial Velocity, Spectrum Analysis, Stellar Evolution

Scientific paper

The authors present new Strömgren photometry and medium-dispersion spectroscopy of the early-type close binary AH Cephei. The masses and radii of the two components are found to be 18.1±0.9 and 15.9±0.8 solar masses and 6.7±0.2 and 6.2±0.2 solar radii respectively. Two possible values of the effective temperature of the primary component lead to two sets of possible luminosities for the components. Comparison with currently available evolutionary tracks for single stars suggests that this system could evolve into contact during its main-sequence lifetime.

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