Mid-infrared view of cool evolved stars with the Very Large Telescope Interferometer

Keiichi Ohnaka; Thomas Driebe; Karl-Heinz Hofmann; Gerd Weigelt; Markus Wittkowski

doi:10.1117/12.788775

28 July 2008 Mid-infrared view of cool evolved stars with the Very Large Telescope Interferometer

Keiichi Ohnaka, Thomas Driebe, Karl-Heinz Hofmann, Gerd Weigelt, Markus Wittkowski

Author Affiliations +

Proceedings Volume 7013, Optical and Infrared Interferometry; 70134M (2008) https://doi.org/10.1117/12.788775
Event: SPIE Astronomical Telescopes + Instrumentation, 2008, Marseille, France

Abstract

Two interferometric instruments at ESO's Very Large Telescope Interferometer (VLTI) - MIDI and AMBER operating in the mid-infrared (8-13 μm) and the near-infrared (JHK), respectively - have proven to be very powerful to study the physical properties of the circumstellar material around evolved stars. With the "spectro-interferometric" capability of MIDI and AMBER, we can disentangle spectral and spatial information on the observed object. VLTI observations have confirmed our pictures on the circumstellar environment of cool evolved stars in some cases but brought about entirely unexpected pictures in other cases. Here, we present our recent results obtained with VLTI/MIDI.

Citation Download Citation

Keiichi Ohnaka, Thomas Driebe, Karl-Heinz Hofmann, Gerd Weigelt, and Markus Wittkowski "Mid-infrared view of cool evolved stars with the Very Large Telescope Interferometer", Proc. SPIE 7013, Optical and Infrared Interferometry, 70134M (28 July 2008); https://doi.org/10.1117/12.788775

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