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A study of convection with delta Scuti stars in open clusters: Pleiades | | J.C. Suarez
; E. Michel
; G. Houdek
; Y. Lebreton
; F. Perez Hernandez
; | | Date: |
5 Apr 2002 | | Subject: | astro-ph | | Abstract: | In this work we propose a preliminary seismic investigation of $delta$ 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 $delta$ 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 ($sim 1.55 M_{odot}$). However, a strong disagreement is found for ``high-mass’’ stars ($sim 1.77 M_{odot}$), whatever the mixing length $(alpha)$ value. These results are compared with previous ones obtained for Praesepe. | | Source: | arXiv, astro-ph/0204097 | | Services: | Forum | Review | PDF | Favorites | |
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