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Modelling a high-mass red giant observed by CoRoT
F. Baudin, C. Barban, M. J. Goupil +15
The G6 giant HR\,2582 (HD\,50890) was observed by CoRoT for approximately 55 days. Mode frequencies are extracted from the observed Fourier spectrum of the light curve. Numerical s…
The variability of the CoRoT target HD171834: gamma Dor pulsations and/or activity?
K. Uytterhoeven, P. Mathias, A. Baglin +15
We present the preliminary results of a frequency and line-profile analysis of the CoRoT gamma Dor candidate HD171834. The data consist of 149 days of CoRoT light curves and a grou…
CoRoT's view on variable B8/9 stars: spots versus pulsations: Evidence for differential rotation in HD 174648
P. Degroote, B. Acke, R. Samadi +11
Context. There exist few variability studies of stars in the region in the Hertzsprung-Russell diagram between the A and B-star pulsational instability strips. With the aid of the…
CoRoT observations of O stars: diverse origins of variability
R. Blomme, M. Briquet, P. Degroote +26
Six O-type stars were observed continuously by the CoRoT satellite during a 34.3-day run. The unprecedented quality of the data allows us to detect even low-amplitude stellar pulsa…
Investigation of three red giants observed in the CoRoT seismo field
S. Hekker, T. Morel, A. Mazumdar +3
Three red giants (HD 49566 (G5III), HD 169370 (K0III) and HD 169751 (K2III)) have been observed in the CoRoT seismo field and additional ground-based spectra have been acquired. We…
Oscillatory motions observed in eruptive filaments
K. Bocchialini, F. Baudin, S. Koutchmy +2
Context: The origin of the variable component of the solar wind is of great intrinsic interest for heliophysics and space-weather, e.g. the initiation of coronal mass ejections, an…