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Asteroseismology of CoRoT & Kepler delta Scuti stars

Sebastià Barceló Forteza
Instituto de Astrofísica de Canarias

Abstract
Asteroseismology allow us to probe the physical conditions inside the stars using the stellar power spectra. Using our own methodology and taking advantage of CoRoT and Kepler light curves, we analyze the power spectral structure of delta Scuti stars including the lowest amplitude modes. In that way, we have been able to estimate the stellar parameters of four delta Scuti stars, allowing us to explain their spectral structure. In addition, studying a larger sample of these kind of stars, we find a possible scaling relation and we observe that most part of the mode variations might be caused by resonant mode coupling.

8 June 2016, 13:30

Centro de Astrofísica
Rua das Estrelas
4150-762 Porto

Institute of Astrophysics and Space Sciences

Institute of Astrophysics and Space Sciences (IA) is a new but long anticipated research infrastructure with a national dimension. It embodies a bold but feasible vision for the development of Astronomy, Astrophysics and Space Sciences in Portugal, taking full advantage and fully realizing the potential created by the national membership of the European Space Agency (ESA) and the European Southern Observatory (ESO). IA resulted from the merging the two most prominent research units in the field in Portugal: the Centre for Astrophysics of the University of Porto (CAUP) and the Center for Astronomy and Astrophysics of the University of Lisbon (CAAUL). It currently hosts more than two-thirds of all active researchers working in Space Sciences in Portugal, and is responsible for an even greater fraction of the national productivity in international ISI journals in the area of Space Sciences. This is the scientific area with the highest relative impact factor (1.65 times above the international average) and the field with the highest average number of citations per article for Portugal.

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