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Investigation of radius anomalies among short-period Cepheids

Journal Article · · Astrophys. J.; (United States)
DOI:https://doi.org/10.1086/157493· OSTI ID:5758166
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.
Research Organization:
Behlen Observatory, University of Nebraska
OSTI ID:
5758166
Journal Information:
Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 233:4; ISSN ASJOA
Country of Publication:
United States
Language:
English

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