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Seismology of the Sun and the Distant Stars 2016
Using Today’s Successes to Prepare the Future
Joint TASC2 & KASC9 Workshop – SPACEINN & HELAS8 Conference



A theoretical insight on pulsations in fast, intermediate-mass rotators
Rhita-Maria Ouazzani (SAC - Aarhus University), Sébastien Salmon (ULg - Liège University), Victoria Antoci (SAC - Aarhus University), Tim Bedding (SIfA - Sydney University), et al.

The g modes which occur in γ Doradus stars, allow to reveal the innermost structure of stars on the lower main sequence, which is not even possible for the Sun. With four years of nearly-continuous photometry from Kepler, we are finally in a good position to apply asteroseismology to γ Dor stars. In particular several analysis (Bedding et al. 2015; Van Reeth et al. 2015) have demonstrated the possibility to detect non-uniform period spacings, which a theoretical study (Bouabid et al. 2013) has predicted to be directly related to rotation. Based on the non uniformity of their period spacings, we provide a univoque relation between an observable and the internal rotation, which applies all over the instability strip of γ Dors when the stars are too rapidly rotating to present rotational splittings.

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