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Mid-infrared imaging of post-AGB objects

Published online by Cambridge University Press:  25 May 2016

C. Kömpe ,
T. Lehmann ,
J. Gürtler ,
B. Stecklum  and
E. Krügel
C. Kömpe
Affiliation:
1Universitäts-Sternwarte
T. Lehmann
Affiliation:
1Universitäts-Sternwarte
J. Gürtler
Affiliation:
1Universitäts-Sternwarte
B. Stecklum
Affiliation:
2Karl-Schwarzschild-Observatorium
E. Krügel
Affiliation:
3Max-Planck-Institut für Radioastronomie

Extract

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The evolution of low- and intermediate-mass stars (about 1 to 8 M⊙) from the asymptotic giant branch (AGB) to the planetary nebulae stage is characterized by intense stellar wind. AGB stars evolve on a very short time scale (several thousand years) via a phase, where the star is hidden from view by a dense dust shell, towards the post-AGB phase (an optically visible star surrounded by a cold dust/gas shell). The observational investigation of these shells is rather difficult due to their small angular extent. However, the resolution of current infrared telescopes is sufficient to resolve the warm dust of the inner part of the envelope.

Type
V. From AGB to Planetary Nebulae
Information
Symposium - International Astronomical Union , Volume 180: Planetary Nebulae , 1997 , pp. 352
Copyright
Copyright © Kluwer 1997 

References

Böker, T., 1996, , , in prep.Google Scholar
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Meixner, et al., 1994, Exp. Astron., 3, 53.Google Scholar