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13 papers · 1 filter
Plaskett's Star: Analysis of the CoRoT photometric data
L. Mahy, E. Gosset, F. Baudin +13
The SRa02 of the CoRoT space mission for Asteroseismology was partly devoted to stars belonging to the Mon OB2 association. An intense monitoring was performed on Plaskett's Star (…
Asteroseismology of red giants from the first four months of Kepler data: Fundamental parameters
T. Kallinger, B. Mosser, S. Hekker +18
Clear power excess in a frequency range typical for solar-type oscillations in red giants has been detected in more than 1000 stars, which have been observed during the first 138 d…
Surface convection and red giants radii measurements
L. Piau, P. Kervella, S. Dib +1
The phenomenological models of convection use characteristic length scales they do not determine but that are chosen to fit solar or stellar observations. We investigate if changes…
Atmospheric parameters and pulsational properties for a sample of \,Sct, \,Dor, and hybrid {\it Kepler} targets
G. Catanzaro, V. Ripepi, S. Bernabei +14
We report spectroscopic observations for 19 \,Sct candidates observed by the {\it Kepler} satellite both in long and short cadence mode. For all these stars, by using spectral s…
Pre-Main Sequence stars in the star forming complex Sh 2-284
F. Cusano, V. Ripepi, J. M. Alcala +10
Located at the galactic anticenter, Sh 2-284 is a HII region which harbors several young open clusters; Dolidze 25, a rare metal poor (Z~0.004) young cluster, is one of these. Give…
Investigating transport of dust particles in plasmas
S. Bardin, J-L. Briançon, F. Brochard +4
An algorithm has been developped, which makes it possible to automatically extract trajectories of a large number of particles from fast imaging data, allowing a statistical analys…