Martin Groenewegen , Franz Kerschbaum , Joris Blommaert , and Christoffel Waelkens
THE HERSCHEL-PACS GUARANTEED TIME KEY PROGRAM ON EVOLVED STARS (Poster)

THE HERSCHEL-PACS GUARANTEED TIME KEY PROGRAM ON EVOLVED STARS

Martin Groenewegen (1), Franz Kerschbaum (2), Joris Blommaert (1), and Christoffel Waelkens (1)
(1) Instituut voor Sterrenkunde, University of Leuven,
Celestijnenlaan 200B, B-3001 Leuven, Belgium
(2) Institut fuer Astronomie der Universitaet Wien,
Tuerkenschanzstrasse 17, A-1180 Wien, Austria

Is this contribution the current status of a Herschel-PACS Guaranteed Time Key Program on evolved stars in presented. The Key Program consists of an imaging part of about 80 objects with the main aim to study the time-evolution of mass loss and the (a)-sphericity of the dust shells, and a spectroscopic part of about 25 objects in order to study mainly dust features.

The sample consists of a representative number of low-and intermediate mass stars (AGB, post-AGB, PNe objects, both C- and O-rich, from low- to extreme mass loss rates) and massive stars (WR, LBV).

The Program will be carried out in Belgian and Austrian PACS Guaranteed Time and involves several institutes in Belgium and the University of Vienna.

In addition, the link with very similar programs on evolved stars by the SPIRE and HIFI teams will also be briefly presented.