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Carbon and oxygen stars evolution in post-AGB phase

Published online by Cambridge University Press:  15 December 2006

N. Siódmiak ,
R. Szczerba ,
M. Meixner  and
G. Stasińska
N. Siódmiak
Affiliation:
Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA N. Copernicus Astronomical Center, Rabianska 8, 87-100 Toruń, Poland
R. Szczerba
Affiliation:
N. Copernicus Astronomical Center, Rabianska 8, 87-100 Toruń, Poland
M. Meixner
Affiliation:
Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA
G. Stasińska
Affiliation:
LUTH, Observatoire de Meudon, 5 place Jules Janssen, 92195 Meudon Cedex, France
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Abstract

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Despite many studies, the post-AGB phase is still not well understood. To make progress in this field, we searched for information about proto-planetary nebulae and built a catalogue of post-AGB objects. Based on collected data we were able to trace the evolution of stars in their late stages making a distinction between carbon and oxygen-rich objects. We focused our attention on spectral features seen in ISO data and clues for AGB nucleosynthesis. Together with the newest HST images of post-AGB objects we can study correlations between morphological types and chemical and physical properties of stars to improve our understanding of stellar evolution.

Keywords

stars: AGB and post-AGBstars: abundancesstars: imaging
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2 , Symposium S234: Planetary Nebulae in our Galaxy and Beyond , April 2006 , pp. 511 - 512
Copyright
© 2006 International Astronomical Union