Sio observations of mass-losing AGB stars |
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| Authors: | B Aringer G Wiedemann H U Käufl J Hron |
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| Institution: | (1) Institut für Astronomie, Universität Wien, Austria;(2) European Southern Observatory, Garching, FRG;(3) Institut für Astronomie, Universität Wien, Austria |
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| Abstract: | We have observed the first overtone rotation-vibration absorption bands of SiO near  = 4µm for a sample of 23 oxygen-rich Mira and Semiregular variables using the ESO NTT and IRSPEC. We discuss the strength of the SiO absorption in terms of the near infrared, IRAS and pulsational properties of the stars. Especially among the Miras there are big differences in the strength of the SiO bands between individual objects, which are probably due to pulsational variability.This work is supported by the Austrian Science Fund Project P9638-AST. |
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| Keywords: | stars: AGB stars: variable stars: mass-loss |
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