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Testing excitation models of rapidly oscillating Ap stars with interferometry
M. S. Cunha, D. Alentiev, I. M. Brandão +1
Rapidly oscillating Ap stars are unique objects in the potential they offer to study the interplay between a number of important physical phenomena, in particular, pulsations, magn…
The fundamental parameters of the roAp star 10 Aql
K. Perraut, S. Borgniet, M. Cunha +12
Due to the strong magnetic field and related abnormal surface layers existing in rapidly oscillating Ap stars, systematic errors are likely to be present when determining their eff…
Enhanced Halpha activity at periastron in the young and massive spectroscopic binary HD200775
M. Benisty, K. Perraut, D. Mourard +15
Young close binaries clear central cavities in their surrounding circumbinary disk from which the stars can still accrete material. This process takes place within the very first a…
The binary Be star Scorpii at high spectral and spatial resolution : II The circumstellar disk evolution after the periastron
Anthony Meilland, Philippe Stee, Alain Spang +3
Classical Be stars are hot non-supergiant stars surrounded by a gaseous circumstellar disk that is responsible for the observed infrared (IR) excess and emission lines. The influen…