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On the nature of early-type emission line objects in NGC6611
Christophe Martayan, Michele Floquet, Anne-Marie Hubert +4
The number and the nature of emission line stars in the young open cluster NGC6611 is still the object of debates. Due to the presence of a strong and variable nebulosity in the cl…
On the behaviour of B and Be stars at low metallicity
Christophe Martayan, Yves Fremat, Anne-Marie Hubert +7
We present new results obtained with the VLT GIRAFFE for a large sample of B and Be stars belonging to the Magellanic Clouds, i.e. at low metallicity. First, we show the effects of…
Pulsating B and Be stars in the Small Magellanic Cloud
P. D. Diago, J. Gutierrez-Soto, J. Fabregat +1
Context: Stellar pulsations in main-sequence B-type stars are driven by the kappa-mechanism due to the Fe-group opacity bump. The current models do not predict the presence of inst…
Be stars and binaries in the field of the SMC open cluster NGC330 with VLT-FLAMES
Christophe Martayan, Michele Floquet, Anne-Marie Hubert +4
Observations of hot stars belonging to the young cluster SMC-NGC330 and its surrounding region were obtained with the VLT-GIRAFFE facilities in MEDUSA mode. We investigated the B a…
ALBUM: a tool for the analysis of slitless spectra and its application to ESO WFI data
Christophe Martayan, Dietrich Baade, Anne-Marie Hubert +3
ALBUM is a general-purpose tool to visualize and screen large amounts of slitless spectra. It was developed for a search for emission-line stars in SMC and LMC clusters. The observ…