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The delta Scuti phenomenon as seen through the Kepler data

Ahmed Grigahcène

The first analysis of the long-awaited space data by asteroseismologists has raised more questions than it resolved (Grigahcene et al. 2010, ApJ). Particularly the data on delta Scuti stars gave wealthy frequency spectra. Some authors claimed the detection of more than 1000 modes (CoRoT observations)!! Which is far beyond any theoretical prediction, especially when photometric cancellation effects are taken into account.
We will discuss in this presentation the delta Scuti phenomenon under the light shed by Kepler on it. Statistics, comparison with ground-based observations and theoretical models are the main guidelines of this talk.

2011 January 05, 13:30

Centro de Astrofísica da Universidade do Porto (Auditorium)
Rua das Estrelas, 4150-762 Porto

Faculdade de Ciências da Universidade de Lisboa Universidade do Porto Faculdade de Ciências e Tecnologia da Universidade de Coimbra
Fundação para a Ciência e a Tecnologia COMPETE 2020 PORTUGAL 2020 União Europeia