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Synchronous Rotation in the Eclipsing Binary 68 Herculis Inferred from Doppler Shifts in its Spectrum and Light Curve Modeling
2014
The Journal of the Iowa Academy of Science
Science Hall, Room 123, Loras College, Dubuque, Iowa Our differential photometry of the eclipsing binary 68 Herculis through V-and R-filters shows periodic minima consistent with a previously established period. As a function of its orbital motion, we report spectra over a limited wavelength range encompassing H-alpha 656.3 nm and helium 667.8 nm lines. Doppler shifts of both stars were resolved in H-alpha, while only the more massive star rendered the helium line with Doppler shifts that agree
doi:10.17833/121-02.1
fatcat:6ppnws6bp5dapbultbqav26yui