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To be or not to be asymmetric? VLTI and the mass loss geometry of red giants

C. Paladini ; D. Klotz ; S. Sacuto ; J. Hron ; M. Wittkowski ; E. Lagadec ; T. Verhoelst ; A. Jorissen ; A. Richichi ; M. Groenewegen ; Hans Olofsson (Institutionen för rymd- och geovetenskap, Onsala rymdobservatorium) ; F. Kerschbaum
Proceedings of SPIE - Optical and Infrared Interferometry III, Amsterdam, Netherlands, 1-6 July 2012 (0277-786X). Vol. 8445 (2012), p. Art. no. 84451R.
[Konferensbidrag, refereegranskat]

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.

Nyckelord: Herschel, Imaging, Infrared, Late-type stars, Mass-loss, Optical interferometry, Stellar atmospheres

Denna post skapades 2013-02-25. Senast ändrad 2015-02-26.
CPL Pubid: 174075


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Institutioner (Chalmers)

Institutionen för rymd- och geovetenskap, Onsala rymdobservatorium


Astronomi, astrofysik och kosmologi

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