Simultaneous light and radial velocity curve solutions for U Cephei

Details Simultaneous light and radial velocity curve solutions for U Cephei Simultaneous light and radial velocity curve solutions for U Cephei

Aug 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...377..278r&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 377, Aug. 10, 1991, p. 278-284.

Astronomy and Astrophysics

Astrophysics

4

Eclipsing Binary Stars, Light Curve, Radial Velocity, Astronomical Photometry, Stellar Spectra, Stellar Temperature

Scientific paper

The light-curve synthesis approach of Wilson and Devinney (1971) has been used to solve simultaneously light and radial velocity curves of the Algol-type eclipsing binary star U Cephei. Eight new differential corrections solutions have been performed to obtain a consistent set of orbital and astrophysical parameters for the light and velocity curves of this famous system. U Cephei is found to be best modeled using the semidetached (mode 5) system geometry of the Wilson and Devinney program, with a primary rotating at about 5.2 times its synchronous rate, and absolute system parameters are found to be M1 = 4.93 solar masses, M2 = 3.27 solar masses, R1 = 2.77 solar radii and R2 = 5.22 solar radii.

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