An investigation of radius anomalies among short-period Cepheids

Details An investigation of radius anomalies among short-period Cepheids An investigation of radius anomalies among short-period Cepheids

Nov 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979apj...234..245n&link_type=abstract

Astrophysical Journal, Part 1, vol. 234, Nov. 15, 1979, p. 245-256.

Astronomy and Astrophysics

Astrophysics

19

Cepheid Variables, Radii, Stellar Spectrophotometry, Stellar Structure, Electrophotometry, Radial Velocity, Stellar Evolution, Stellar Luminosity

Scientific paper

Simultaneous photometric and spectroscopic observations have been obtained of two short-period Cepheids, SU Cas and TU Cas. The Wesselink method of Barnes et al. was used to obtain radii. The radii are found to agree, within the expected error, with evolutionary values. This strengthens the argument that the beat Cepheids are normal Cepheids in mixed-mode behavior rather than a separate class of objects and that evolutionary masses and radii are correct.

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