A search for light-time effects in binary cepheids - AW Persei

Details A search for light-time effects in binary cepheids - AW Persei A search for light-time effects in binary cepheids - AW Persei

Sep 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...272..214e&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 272, Sept. 1, 1983, p. 214-218. Research supported by the Natural Sciences

Astronomy and Astrophysics

Astrophysics

8

Astronomical Photometry, Binary Stars, Cepheid Variables, Light Curve, Phase Shift, Radial Velocity, Time Response

Scientific paper

Phase residuals in O-C diagrams for the classical Cepheid AW Persei have been examined to see whether they produce periodic variations associated with binary orbital motion (the light-time effect). Variations of several standard deviations in the O-C diagram are consistent with a light-time interpretation. The available radial velocity information is in agreement with the size and timing of the light curve shifts. An orbital period of 20 years is derived from recent radial velocities. Mass estimates from the orbit are discussed.

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