On the binary status of the Cepheid SV Persei

Details On the binary status of the Cepheid SV Persei On the binary status of the Cepheid SV Persei

Jan 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992a%26a...253..126g&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 253, no. 1, Jan. 1992, p. 126-130. Research supported by Universidad Nacional

Astronomy and Astrophysics

Astrophysics

4

Binary Stars, Cepheid Variables, Companion Stars, Radial Velocity, Astronomical Photometry, Charge Coupled Devices, Iue, Velocity Measurement

Scientific paper

The blue companion recently identified for the classical Cepheid SV Per has prompted the present analysis of the Cepheid's radial velocities, in search of binary motion. CCD radial velocity data have accordingly been obtained which, in conjunction with previously unpublished measurements, limit a possible systematic variation of the gamma velocity to less than 3 km/sec. Although no 3-sigma evidence is found for a systematic change in gamma, neither is there comparable evidence for its constancy.

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