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Modelling the Spectral Energy Distributions of AGB Stars in the LMC

Published online by Cambridge University Press:  25 May 2016

M. A. T. Groenewegen ,
J. Th. Van Loon ,
P. A. Whitelock ,
P. R. Wood  and
A. A. Zijlstra
M. A. T. Groenewegen
Affiliation:
Max-Planck-Institut für Astrophysik, Garching, Germany
J. Th. Van Loon
Affiliation:
European Southern Observatory, Garching, Germany
P. A. Whitelock
Affiliation:
South African Astronomical Observatory, Observatory, South Africa
P. R. Wood
Affiliation:
Mount Stromlo and Siding Spring Observatories, Canberra ACT, Australia
A. A. Zijlstra
Affiliation:
European Southern Observatory, Garching, Germany

Abstract

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The spectral energy distributions of 16 AGB stars in the LMC are fitted. The 6 known oxygen-rich stars are well fitted with silicate dust. Due to the completely different absorption properties of silicate and carbonaceous dust we argue that of the 10 stars of unknown spectral type, 1 is probably O-rich while the other 9 are probably C-rich.

The Period-Luminosity relation is discussed. Both the O- and C-rich LPVs in this study appear to lie on extensions of P-L relations derived for stars with much shorter periods.

Type
Session VIII — Circumstellar Shells
Information
Symposium - International Astronomical Union , Volume 177: The Carbon Star Phenomenon , 2000 , pp. 385 - 390
Copyright
Copyright © Kluwer 2000 

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