Perspectives in Radiative Transfer and Interferometry
S. Wolf, F. Allard and Ph. Stee (eds)
EAS Publications Series, 28 (2008) 61-66DOI: 10.1051/eas:0828010
Infrared Spectro-Interferometry of Cool Evolved Stars
K. Ohnaka Max-Planck-Institut für
Radioastronomie, Auf dem Hügel 69, 53121 Bonn, Germany
(Published online: 22 April 2008)
Abstract
Recent years have seen a major contribution of infrared interferometry
to studies on the circumstellar environment of cool evolved stars.
Particularly, two interferometric instruments at ESO's
Very Large Telescope Interferometer (VLTI) - AMBER and MIDI -
offer the community a novel
opportunity to carry out high-angular resolution observations.
In the mid-infrared, where
thermal emission from the circumstellar gas and/or dust is
remarkable, MIDI has proven to be a powerful tool to derive the
physical properties of the molecule and dust formation zone close
to the star, particularly when combined with radiative transfer
modeling. AMBER is also expected to shed more light on the circumstellar
material closer to the star and the photosphere itself.
In this paper, we present recent results on cool evolved stars
obtained with VLTI as well as future prospects for interferometric
observations and radiative transfer modeling for cool evolved stars.
© EAS, EDP Sciences 2008
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