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Water isotopologues in the circumstellar envelopes of M-type AGB stars

Danilovich, T.; Lombaert, Robin; Decin, Leen; Karakas, Amanda; Maercker, Matthias; Olofsson, Hans G.


Aims. In this study we intend to examine rotational emission lines of two isotopologues of water: H2 17O and H2 18O. By determining the abundances of these molecules, we aim to use the derived isotopologue - and hence oxygen isotope - ratios to put constraints on the masses of a sample of M-type AGB stars that have not been classified as OH/IR stars. Methods. We have used detailed radiative transfer analysis based on the accelerated lambda iteration method to model the circumstellar molecular...[Show more]

CollectionsANU Research Publications
Date published: 2017
Type: Journal article
Source: Astronomy and Astrophysics
DOI: 10.1051/0004-6361/201630055


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