Instability domains of δ Scuti and Slowly Pulsating B stars : How will the CoRoT satellite help to determine the limits ?

Details Instability domains of δ Scuti and Slowly Pulsating B stars : How will the CoRoT satellite help to determine the limits ? Instability domains of δ Scuti and Slowly Pulsating B stars : How will the CoRoT satellite help to determine the limits ?

Jul 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009coast.158..189l&link_type=abstract

"Communications in Asteroseismology, Vol.158, p. 189 Proceedings of "38th Liege International Astrophysical Colloquium: Evoluti

Astronomy and Astrophysics

Astrophysics

3

Scientific paper

This work is intended to illustrate the possibilities offered by the CoRoT satellite observations to study the different instability strips, and through them, physical processes and specific features of stellar interiors. The CoRoT space mission {(Baglin A. et al. 2002)}, launched on December 27th 2006, has been developped and is operated by CNES, with the contribution of Austria, Belgium, Brasil, ESA, Germany and Spain. It enables us to observe oscillations from stars down to a noise level of less than a ppm, much lower than the limit usually obtained from the ground. During the nominal duration of the mission, about 6 long runs (˜ 150d each) and 6 short runs (˜ 20d each) will take place {(CoRoT Book, 2006)}. Only 2 long runs and 1 short run are illustrated in this study. This means that the number of available targets will have more than tripled by the end of the mission. These data might help testing the "purity" of the instability strips (i.e. the presence/absence of photometrically constant stars within) and lead to the discovery of new classes of pulsating stars {(Degroote et al 2008)}. We address this problem in the frame of the B and A main sequence stars.

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