Solar-like oscillations in Delta Scuti stars

Details Solar-like oscillations in Delta Scuti stars Solar-like oscillations in Delta Scuti stars

2002-08-30

arxiv.org/abs/astro-ph/0208573v1

Astron.Astrophys. 395 (2002) 563-572

Astronomy and Astrophysics

Astrophysics

8 pages, 5 figures, accepted for publication in A&A

Scientific paper

10.1051/0004-6361:20021322

Model computations of Delta Scuti stars, located in the vicinity of the red edge of the classical instability strip, suggest amplitudes of solar-like oscillations larger than in cooler models located outside the instability strip. Solar-like amplitudes in our Delta Scuti models are found to be large enough to be detectable with ground-based instruments provided they can be distinguished from the opacity-driven large-amplitude pulsations. There would be advantages in observing simultaneously opacity-driven and stochastically excited modes in the same star. We anticipate their possible detection in the context of the planned asteroseismic space missions, such as the French mission COROT (COnvection ROtation and planetary Transits). We propose known Delta Scuti stars as potential candidates for the target selection of these upcoming space missions.

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