Wesselink radii of double-mode cepheids

Details Wesselink radii of double-mode cepheids Wesselink radii of double-mode cepheids

Dec 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979mnras.189..659b&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 189, Dec. 1979, p. 659-666.

Astronomy and Astrophysics

Astronomy

18

Cepheid Variables, Radii, Stellar Spectrophotometry, Electrophotometry, Infrared Astronomy, Radial Velocity, Visual Photometry

Scientific paper

The pulsation properties of double-mode cepheids are discussed and found to be indistinguishable from those of normal Population I cepheids. Intrinsic colors of double-mode cepheids show that there is no preferred temperature domain for these stars. Simultaneous BVRI photometry and photoelectric radial velocities are used to estimate the radii of eight double-mode cepheids by a modified Wesselink technique. The period-radius relationship is found to be the same as that of normal cepheids, but very different from predictions of pulsation theory using chemically homogeneous stars.

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