Observational studies of Cepheids. VI - Period-radius relations

Abstract

view Abstract Citations (31) References (36) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Observational Studies of Cepheids. VI. Period-Radius Relations Moffett, Thomas J. ; Barnes, Thomas J., III Abstract Using the visual surface brightness technique, the radii of 63 classical Cepheids covering a period range of three to 45 days have been determined. The resulting period-radius relation is in reasonable agreement with the theoretical period-radius relation for Cepheids. After reviewing all of the modern Baade-Wesselink type solutions, it is found that they bracket the theoretical period-radius relation. These results cast doubt on the validity of the beat/bump period-radius relation and suggest that the distance and/or temperature scales for classical Cepheids may need adjustment. A reliable period-radius relation is still not at hand, but improvements have been made which appear to be converging toward a confident relation. Publication: The Astrophysical Journal Pub Date: December 1987 DOI: 10.1086/165825 Bibcode: 1987ApJ...323..280M Keywords: Cepheid Variables; Radii; Stellar Luminosity; Stellar Oscillations; Stellar Spectrophotometry; Computational Astrophysics; Star Clusters; Stellar Temperature; Astrophysics; STARS: CEPHEIDS; STARS: DIAMETERS; STARS: PULSATION full text sources ADS | data products SIMBAD (62) Related Materials (7) Part 1: 1980ApJS...44..427M Part 2: 1984ApJS...55..389M Part 3: 1985ApJS...58..843M Part 4: 1986ApJ...304..607M Part 5: 1987ApJS...65..307B Part 7: 1988ApJS...66...43B Part 8: 1989ApJS...69..951W