To be or not to be asymmetric? VLTI and the mass loss geometry of red giants
Paper in 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.
Herschel
Imaging
Late-type stars
Stellar atmospheres
Optical interferometry
Infrared
Mass-loss
Author
C. Paladini
Universitat Wien
D. Klotz
Universitat Wien
S. Sacuto
Uppsala Universitet
J. Hron
Universitat Wien
M. Wittkowski
European Southern Observatory
E. Lagadec
European Southern Observatory
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, Earth and Space Sciences, Onsala Space Observatory
F. Kerschbaum
Universitat Wien
Proceedings of SPIE - The International Society for Optical Engineering
0277786X (ISSN) 1996756X (eISSN)
Vol. 8445 Art. no. 84451R- 84451R978-081949146-6 (ISBN)
Subject Categories (SSIF 2011)
Astronomy, Astrophysics and Cosmology
DOI
10.1117/12.926380
ISBN
978-081949146-6