Volume 395, Number 2, November IV 2002
|Page(s)||563 - 571|
|Section||Interstellar and circumstellar matter|
|Published online||14 November 2002|
Solar-like oscillations in δ Scuti stars
Astronomy Unit, Queen Mary, University of London, London E14NS, UK
2 Observatoire de Paris, LESIA, CNRS FRE 2461, 92195 Meudon, France
3 Institute of Astronomy, University of Cambridge, Cambridge CB3 0HA, UK
Corresponding author: R. Samadi, Reza.Samadi@obspm.fr
Accepted: 5 September 2002
Model computations of δ 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 δ 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 δ Scuti stars as potential candidates for the target selection of these upcoming space missions.
Key words: stars: interiors / stars: variables: δSct
© ESO, 2002
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.