Truong-Bach;
Nguyen-Q-Rieu;
Sylvester, RJ;
Barlow, MJ;
Liu, XW;
Lim, T;
Omont, A;
... Skinner, CJ; + view all
(1998)
ISO LWS observations of H2O from R Cas: A consistent model for its circumstellar envelope.
Astrophysics and Space Science
, 255
pp. 325-328.
10.1023/A:1001539824590.
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Abstract
We present an ISO LWS 43-197 µm grating spectrum of the oxygen-rich AGB star R Cas. The spectrum is rich of isolated and blended H2O lines. For their identification and in order to determine the physical parameters of the circumstellar envelope, we have constructed a model which treats radiative transfer, chemical exchange and photodissociation reactions, and various heating and cooling processes in a consistent manner. By fitting the observed line fluxes and using stellar parameters based upon the Hipparcos distance, we derived a mass-loss rate of M = 1 10-6 M⊙ yr-1 which is close to the value 6 10-7 M⊙ yr-1 previously derived for W Hya, another oxygen-rich AGB star.
| Type: | Article |
|---|---|
| Title: | ISO LWS observations of H2O from R Cas: A consistent model for its circumstellar envelope |
| Location: | NOORDWIJKERHOUT, NETHERLANDS |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1023/A:1001539824590 |
| Publisher version: | https://doi.org/10.1023/A:1001539824590 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Science & Technology, Physical Sciences, Astronomy & Astrophysics, WATER, STARS, RATES, CO |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10113223 |
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