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Resolving the dusty circumstellar environment of the A[e] supergiant HD 62623 with the VLTI/MIDI
A. Meilland, S. Kanaan, M. Borges Fernandes +4
B[e] stars are hot stars surrounded by circumstellar gas and dust responsible for the presence of emission lines and IR-excess in their spectra. How dust can be formed in this high…
VLTI/AMBER spectro-interferometric imaging of VX Sgr's inhomogenous outer atmosphere
A. Chiavassa, S. Lacour, F. Millour +8
Aims. We aim to explore the photosphere of the very cool late-type star VX Sgr and in particular the existence and characterization of molecular layers above the continuum forming…
B[e] stars at the highest angular resolution: the case of HD87643
Florentin Millour, Olivier Chesneau, Marcelo Borges Fernandes +1
New results on the B[e] star HD87643 are presented here. They were obtained with a wide range of different instruments, from wide-field imaging with the WFI camera, high resolution…
Resolving the asymmetric inner wind region of the yellow hypergiant IRC+10420 with VLTI/AMBER in low and high spectral resolution mode
T. Driebe, J. H. Groh, K. -H. Hofmann +15
We obtained near-infrared long-baseline interferometry of IRC+10420 with the AMBER instrument of ESO's Very Large Telescope Interferometer (VLTI) in low and high spectral resolutio…
VLTI/AMBER unveils a possible dusty pinwheel nebula in WR118
Florentin Millour, Thomas Driebe, Olivier Chesneau +6
Most Wolf-Rayet stars (WR) of WC9 sub-type exhibit a dusty circumstellar envelope, but it is still a matter of debate how dust can form in their harsh environment. In a few cases,…
A binary engine fuelling HD87643' s complex circumstellar environment, using AMBER/VLTI
Florentin Millour, Olivier Chesneau, Marcelo Borges Fernandes +19
Context. The star HD 87643, exhibiting the "B[e] phenomenon", has one of the most extreme infrared excesses for this object class. It harbours a large amount of both hot and cold d…