The orbit of Beta Cephei derived from the light-time effect

Details The orbit of Beta Cephei derived from the light-time effect The orbit of Beta Cephei derived from the light-time effect

Jan 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992a%26a...253..178p&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 253, no. 1, Jan. 1992, p. 178-184.

Astronomy and Astrophysics

Astrophysics

33

Binary Stars, Stellar Orbits, Stellar Oscillations, Stellar Spectrophotometry, Center Of Mass, Orbital Elements, Periodic Variations, Radial Velocity, Variable Stars, Visual Observation

Scientific paper

A straightforward explanation is suggested for the O-C diagram variations noted in Beta Cep, in view of the characterizability of apparent period changes in terms of the orbital motion of the variable, in a binary system whose secondary is the less massive companion resolved by speckle interferometry. While spectroscopic orbital elements are derived from the O-C diagram, the visual ones are obtained from speckle interferometric data. The orbital elements are found to be consistent with both observed period changes and the nonpulsational component of the radial velocity variation.

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