Hostname: page-component-6bf8c574d5-h6jzd Total loading time: 0.001 Render date: 2025-02-22T17:44:34.680Z Has data issue: false hasContentIssue false
  • English
  • Français

Hydrodynamic cycles in RR Lyrae stars

Published online by Cambridge University Press:  19 December 2013

M. Chadid  and
G.W. Preston
M. Chadid
Affiliation:
Université Nice Sophia-Antipolis, Observatoire de la Côte d'Azur, UMR 7293, Parc Valrose, 06108 Nice Cedex 02, France
G.W. Preston
Affiliation:
Université Nice Sophia-Antipolis, Observatoire de la Côte d'Azur, UMR 7293, Parc Valrose, 06108 Nice Cedex 02, France
Get access

Abstract

We present a detailed atmospheric dynamics study of Blazhko and nonBlazhko RR ab stars, using a high-resolution spectroscopic survey. We derived the dynamical parameters: dynamical accelerations, radius variations, rise time, shock amplitudes, full width at half maximum, and their variation during the Blazhko modulation, and we highlight the relationship between period changes and variation in dynamical parameters over multi- Blazhko cycles. We discuss the origin of the Blazhko effect, giving a new empirical side for further theoretical models.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 63: New Advances in Stellar Physics: From Microscopic to Macroscopic Processes , 2013 , pp. 47 - 52
Copyright
© EAS, EDP Sciences, 2013

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Chadid, M., & Preston, G.W., 2013, MNRAS, 434, 552CrossRef
Chadid, M., 2011, Carnegie Astrophysics Series 5, 29, ed. Mc William, A.Google Scholar
Chadid, M., Perini, C., Bono, G., et al., 2011, A&A, 527, 146
Chadid, M., et al., 2008, A&A, 491, 537
Chadid, M., Wade, G.A., Shorlin, S.L.S., & Landstreet, J.D., 2004, A&A, 413, 1087
Cox, A., 1992, NPSP Conf., 139, 409
For, B., Preston, G., & Sneden, Ch., 2011, ApJS, 194, 38CrossRef
Preston, G.W., Smak, J., & Paczynski, B., 1965, ApJS, 12, 99CrossRef
Preston, G.W., 2009, A&A, 507, 1621
Preston, G.W., 2011, AJ, 141, 6CrossRef
Sanford, R., 1949, ApJ, 109, 208CrossRef
Shibahashi, H., 2000, ASP Conf. Ser., 203, 299
Stothers, R.B., 2006, ApJ, 652, 643CrossRef
Struve, O., 1947, PASP, 59, 192CrossRef
Struve, O., Blaauw, A., 1948, 108, 60