Hostname: page-component-cd9895bd7-q99xh Total loading time: 0 Render date: 2024-12-12T08:50:46.911Z Has data issue: false hasContentIssue false
  • English
  • Français

The empirical period-radius relation for pulsating stars: a synthesis based on photometric and radial velocity measurements

Published online by Cambridge University Press:  04 August 2017

G. Burki
G. Burki*
Affiliation:
Observatoire de Genève, Switzerland

Extract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

The relation existing between the radius and the period for the pulsating stars of a given class constitutes a powerful test for the theory of stellar evolution and for the identification of the pulsation modes. In recent years, several authors have determined the mean radius of a lot of pulsating stars of various classes by applying the Baade-Wesselink method. Fig. 1 presents the resulting general logP - logR diagram grouping these determinations. The sources for the radii are given by Burki and Meylan (1986). The variable stars in known binaries have been excluded since the presence of a companion biases the radius calculation (Burki, 1984). The determinations marked by arrows are based on the radial velocities by CORAVEL (1m telescope at the Haute-Provence Observatory, France) or/and on the photometry in the Geneva system (40cm and 70cm telescopes at La Silla Observatory, Chile).

Type
II. Photometric Research Programmes
Information
Symposium - International Astronomical Union , Volume 118: Instrumentation and Research Programmes for Small Telescopes , 1986 , pp. 273 - 274
Copyright
Copyright © Reidel 1986 

References

Burki, G.: 1984, Astron. Astrophys. 133, 185 Google Scholar
Burki, G.: 1985, Duplicity, Mass Loss and the Cepheid Mass Anomaly, in Cepheids: Observations and Theory, IAU Coll. no 82, Ed. Madore, B.F., Cambridge Univ. Press, Cambridge, p. 71 Google Scholar
Burki, G., Meylan, G.: 1986, Astron. Astrophys., in press.Google Scholar
Fernie, J.D.: 1984, Astrophys. J. 282, 641 CrossRefGoogle Scholar
Harris, H.: 1985, Population II Cepheids, in Cepheids: Observations and Theory, IAU Coll. no 82, Ed. Madore, B.F., Cambridge Univ. Press, Cambridge, p. 232 Google Scholar
Mayor, M., Acker, A.: 1980, Astron. Astrophys. 92, 1 Google Scholar