Circumstellar H2O in M-type AGB stars
Abstract
Surprisingly high amounts of H2O have recently been reported in the circumstellar envelope around the M-type AGB star W Hya. However, substantial uncertainties remain, as the required radiative transfer modelling is difficult due to high optical depths, sub-thermal excitation and the sensitivity to the combined radiation field from the central star and dust grains.
- Publication:
-
Organic Matter in Space
- Pub Date:
- October 2008
- DOI:
- Bibcode:
- 2008IAUS..251..163M
- Keywords:
-
- Stars: AGB and post-AGB;
- circumstellar matter;
- mass loss