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Mass-losing AGB Stars in the LMC

Published online by Cambridge University Press:  25 May 2016

Jacco Th. Van Loon ,
Albert A. Zijlstra ,
Patricia A. Whitelock ,
Cecile Loup  and
L.B.F.M. Waters
Jacco Th. Van Loon
Affiliation:
European Southern Observatory, Garching bei München, Germany
Albert A. Zijlstra
Affiliation:
European Southern Observatory, Garching bei München, Germany
Patricia A. Whitelock
Affiliation:
South African Astronomical Observatory
Cecile Loup
Affiliation:
European Southern Observatory, Santiago, Chile
L.B.F.M. Waters
Affiliation:
University of Amsterdam, The Netherlands

Abstract

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We show the results of an infrared study of a sample of heavily obscured AGB stars in the LMC. Both carbon-rich and oxygen-rich mass-losing AGB stars can be found at both high and low luminosities, but the percentage of carbon stars decreases with increasing luminosity. The optical depth of the circumstellar envelopes also decreases with increasing luminosity, while the mass-loss rates are (nearly) constant with luminosity. We also show tentative evidence for having found the first post-AGB stars in the LMC.

Type
Session III — Observed Spectra and Energy Distributions
Information
Symposium - International Astronomical Union , Volume 177: The Carbon Star Phenomenon , 2000 , pp. 145 - 151
Copyright
Copyright © Kluwer 2000 

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