Hostname: page-component-745bb68f8f-cphqk Total loading time: 0 Render date: 2025-02-01T11:43:43.342Z Has data issue: false hasContentIssue false
  • English
  • Français

A Study of Convection with δ Scuti Stars in Open Clusters: the Pleiades

Published online by Cambridge University Press:  12 April 2016

J.-C. Suárez ,
E. Michel ,
G. Houdek ,
Y. Lebreton  and
F. Pérez Hernández
J.-C. Suárez
Affiliation:
Observatoire de Paris-Meudon, DASGAL, UMR 8633, F-92195 Meudon, France
E. Michel
Affiliation:
Observatoire de Paris-Meudon, DASGAL, UMR 8633, F-92195 Meudon, France
G. Houdek
Affiliation:
I.A., University of Cambridge, Cambridge, U.K.
Y. Lebreton
Affiliation:
Observatoire de Paris-Meudon, DASGAL, UMR 8633, F-92195 Meudon, France
F. Pérez Hernández
Affiliation:
Instituto de Astrofísica de Canarias, E-38200 La Laguna, Tenerife, Spain

Abstract

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.

In this work we propose a preliminary seismic investigation of δ Scuti stars in the Pleiades cluster, focusing on potential diagnostics of convection and core-overshooting. Taking into account the effect of fast rotation in the modelling, we compare observed frequencies for 4 δ Scuti stars with radial linear instability predictions. A satisfying agreement is reached between the predicted ranges of unstable modes and those derived from observations for “low-mass” stars (∼ 1.55M⊙). However, a strong disagreement is found for “high-mass” stars (∼ 1.77M⊙), whatever the mixing length (α) value. These results are compared with previous ones obtained for Praesepe.

Type
Part 4. The Interaction between Convection and Pulsation
Information
International Astronomical Union Colloquium , Volume 185: Radial and Nonradial Pulsations as Probes of Stellar Physics , 2002 , pp. 490 - 493
Copyright
Copyright © Astronomical Society of the Pacific 2002

References

Michel, E., Hernández, M.M., Houdek, G., Goupil, M.J., Lebreton, Y., Pérez Hernández, F., Belmonte, J.A., & Souri, F. 1999, A&A, 342, 153 Google Scholar
Souri, F., Goupil, M.J., & Dziembowski, W.A. 1998, A&A, 334, 911 Google Scholar
Houdek, G., Balmforth, N.J., Christensen-Dalsgaard, J., Gough, D.O. 1999, A&A, 351, 582 Google Scholar
Iglesias, C.A. & Rogers, F.J. 1996, ApJ 464, 943 Google Scholar
Fox Machado, L., Pérez Hernández, F., Suárez, J.-C., & Michel, E. 2001, Proc. SOHO 10/GONG, (ESA SP-464), 427Google Scholar
Morel, P. 1997, A&A, 124, 597 Google Scholar
Pérez Hernández, F., Claret, A., Hernández, M.M., & Michel, E. 1999, A&A, 346, 586 Google Scholar
Suárez, J.-C., Michel, E., Fox, L., Pérez, F., Lebreton, Y., Claret, A., & Li, Z., 2001, Proc. SOHO 10/GONG, (ESA SP-464), 461Google Scholar