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Infrared Spectroscopy of Molecules in Circumstellar Material

Published online by Cambridge University Press:  14 August 2015

Donald N. B. Hall
Donald N. B. Hall*
Affiliation:
Kitt Peak National Observatory∗

Abstract

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High resolution spectra of red giants and long period variables exhibit lines of infrared CO vibration-rotation bands arising in circumstellar material. In the few such stars so far observed at very high resolution (≲ 1 km/s) the circumstellar material appears localized in 3 distinct regimes with temperatures of 800K, 200K and 75K and expansion velocities of 0, 10 and 16 km/s rather than being uniformly distributed.

Type
Research Article
Information
Symposium - International Astronomical Union , Volume 87: Interstellar Molecules , 1980 , pp. 515 - 524
Copyright
Copyright © Reidel 1980 

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