TENTATIVE DETECTION OF CIRCUMSTELLAR CO2 FROM THE AGB STAR R CRATERIS

Authors
RYDE N ERIKSSON K GUSTAFSSON B LINDQVIST M OLOFSSON H
Citation
N. Ryde et al., TENTATIVE DETECTION OF CIRCUMSTELLAR CO2 FROM THE AGB STAR R CRATERIS, Astrophysics and space science, 255(1-2), 1998, pp. 301-302
Citations number
NO
Categorie Soggetti
Astronomy & Astrophysics
Journal title
Astrophysics and space science → ACNP
ISSN journal
0004640X
Volume
255
Issue
1-2
Year of publication
1998
Pages
301 - 302
Database
ISI
SICI code
0004-640X(1998)255:1-2<301:TDOCCF>2.0.ZU;2-L
Abstract
We report on and discuss the detection of an emission feature at 14.98 mu m from the oxygen-rich, semi-regularly pulsating asymptotic Giant Branch star R Crateris, a feature which we suggest to be due to the 2( 0)(1) Q-branch of circumstellar CO2. We also suggest a reasonable exci tation mechanism, which could explain the height, the width and the as ymmetry of the feature.