To be or not to be asymmetric? VLTI and the mass loss geometry of red giants
Paper i proceeding, 2012

The mass-loss process is a key ingredient for our understanding in many fields of astrophysics, including stellar evolution and the enrichment of the interstellar medium (ISM) via stellar yields. We combined the capability of the VLTI/MIDI and VLT/VISIR instruments with very recent Herschel/PACS observations to characterize the geometry of mass loss from evolved red giants on the Asymptotic Giant Branch (AGB) at various scales. This paper describes the sample of objects, the observing strategy, the tool for the interpretation, and preliminary MIDI results for two targets: U Ant and θ Aps.


Stellar atmospheres


Optical interferometry


Late-type stars



C. Paladini

Universität Wien

D. Klotz

Universität Wien

S. Sacuto

Uppsala universitet

J. Hron

Universität Wien

M. Wittkowski

European Southern Observatory (ESO)

E. Lagadec

European Southern Observatory (ESO)

T. Verhoelst

Belgian Institute for Space Aeronomy

A. Jorissen

Université libre de Bruxelles (ULB)

A. Richichi

National Astronomical Research Institute of Thailand

M. A. T. Groenewegen

Royal Observatory of Belgium

Hans Olofsson

Chalmers, Rymd- och geovetenskap, Onsala rymdobservatorium

F. Kerschbaum

Universität Wien

Proceedings of SPIE - The International Society for Optical Engineering

0277786X (ISSN)

Vol. 8445 Art. no. 84451R- 84451R


Astronomi, astrofysik och kosmologi