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Spectral Line Surveys of Evolved Stars

Published online by Cambridge University Press:  21 December 2011

J. Cernicharo ,
M. Agúndez  and
M. Guélin
J. Cernicharo
Affiliation:
CAB. INTA-CSIC. Crta Torrejón km 4. 28850 Torrejón de Ardoz. Madrid.Spain email: [email protected]
M. Agúndez
Affiliation:
LUTH, Observatoire de Paris Meudon. Paris.France email: [email protected]
M. Guélin
Affiliation:
IRAM. 300 Av. de la Piscine. F-38406 St. Martin d'Hères, France email: [email protected]
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Abstract

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The observation of evolved stars in selected evolutionary stages allow us to track the evolution of the physical properties and chemical composition of the matter that is being returned to the interstellar medium during these last stages of the life of stars. While the dust component can be characterized through the observation of the spectral energy distribution in the infrared part of the spectrum, spectral line surveys carried out in a wide spectral band provide the best probe of the physical properties and chemical composition of the gas phase. In this lecture we review the different line surveys carried out toward these objects and their impact in our understanding of the chemical complexity evolution in the circumstellar envelopes around evolved stars.

Keywords

astrochemistryline: identificationsurveysstars: AGB and post-AGB
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 7 , Symposium S280: The Molecular Universe , June 2011 , pp. 237 - 248
Copyright
Copyright © International Astronomical Union 2011

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