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46 papers · 2 filters
Mode visibilities in rapidly rotating stars
D. R. Reese, V. Prat, C. Barban +2
Context: Mode identification is a crucial step to comparing observed frequencies with theoretical ones, but has proven to be difficult in rapidly rotating stars. Aims: To further c…
The 2.35 year itch of Cyg OB2 #9. II. Radio monitoring
R. Blomme, Y. Naze, D. Volpi +5
Cyg OB2 #9 is one of a small set of non-thermal radio emitting massive O-star binaries. The non-thermal radiation is due to synchrotron emission in the colliding-wind region. Cyg O…
High-precision CoRoT space photometry and fundamental parameter determination of the B2.5V star HD 48977
Anne Thoul, Pieter Degroote, Claude Catala +10
We present the CoRoT light curve of the bright B2.5V star HD 48977 observed during a short run of the mission in 2008, as well as a high-resolution spectrum gathered with the HERME…
The standard flare model in three dimensions. II. Upper limit on solar flare energy
G. Aulanier, P. Demoulin, C. J. Schrijver +3
Solar flares strongly affect the Sun's atmosphere as well as the Earth's environment. Quantifying the maximum possible energy of solar flares of the present-day Sun, if any, is thu…
A detailed X-ray investigation of zeta Puppis - The variability on short and long timescales
Yael Naze, Lidia M. Oskinova, Eric Gosset
Stellar winds are a crucial component of massive stars, but their exact properties still remain uncertain. To shed some light on this subject, we have analyzed an exceptional set o…
An interferometric study of the Fomalhaut inner debris disk II. Keck Nuller mid-infrared observations
B. Mennesson, O. Absil, J. Lebreton +7
We report on high contrast mid-infrared observations of Fomalhaut obtained with the Keck Interferometer Nuller (KIN) showing a small resolved excess over the level expected from th…