Possible light-time effect in the Cepheids FN Aquilae and RX Aurigae

Details Possible light-time effect in the Cepheids FN Aquilae and RX Aurigae Possible light-time effect in the Cepheids FN Aquilae and RX Aurigae

May 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988pasp..100..589s&link_type=abstract

Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 100, May 1988, p. 589-593. Research supported by Dudley

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8

Binary Stars, Cepheid Variables, Stellar Color, Light Curve, Radial Velocity, Stellar Orbits, Stellar Spectrophotometry

Scientific paper

A study of the O-C diagrams of FN Aql and RX Aur revealed sinusoidal variations in the pulsation period of both Cepheids. An interpretation in terms of the binary nature of these variable stars is suggested because both stars have an unusual color index that may be caused by an unresolved companion. The orbital period and some other parameters are determined. Radial-velocity studies are strongly recommended in order to get decisive information on the existence of the companion.

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