Cool evolved stars as seen by the Very Large Telescope Interferometer: Power of infrared spectro-interferometry
Ohnaka, K.; Driebe, T.; Hofmann, K.-H.; Schertl, D.; Weigelt, G.; Wittkowski, M.
UNSOLVED PROBLEMS IN STELLAR PHYSICS: A Conference in Honor of Douglas Gough.
AIP Conference Proceedings, Volume 948, pp. 449-453 (2007)
Abstract
Two interferometric instruments at ESO's Very Large Telescope Interferometer (VLTI), MIDI and AMBER which operate in the mid-infrared (8-13 μm) and the near-infrared (JHK)
respectively, have proven to be powerful tools to probe the circumstellar environment of evolved stars. Their spectro-interferometric capability enables us to observe
objects with spectral and spatial information disentangled. VLTI observations confirm our pictures on the circumstellar environment of cool evolved stars in some cases
but bring about entirely unexpected pictures for other cases. Here, we present particularly our recent results obtained with VLTI/MIDI.
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