Justtanont, K;
Muller, S;
Barlow, MJ;
Engels, D;
García-Hernández, DA;
Groenewegen, MAT;
Matsuura, M;
... De Nutte, R; + view all
(2019)
ALMA spectrum of the extreme OH/IR star OH 26.5+0.6.
In:
Proceedings of the International Astronomical Union.
(pp. S343-S343).
CUP: Vienna, Austria.
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Abstract
We present ALMA band 7 data of the extreme OH/IR star, OH 26.5+0.6. In addition to lines of CO and its isotopologues, the circumstellar envelope also exhibits a number of emission lines due to metal-containing molecules, e.g., NaCl and KCl. A lack of C18O is expected, but a non-detection of C17O is puzzling given the strengths of H217O in Herschel spectra of the star. However, a line associated with Si17O is detected. We also report a tentative detection of a gas-phase emission line of MgS. The ALMA spectrum of this object reveals intriguing features which may be used to investigate chemical processes and dust formation during a high mass-loss phase.
| Type: | Proceedings paper |
|---|---|
| Title: | ALMA spectrum of the extreme OH/IR star OH 26.5+0.6 |
| Event: | IAU Symposium, 2019 |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1017/S1743921318007986 |
| Publisher version: | https://doi.org/10.1017/S1743921318007986 |
| 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. |
| 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-pp.ucl.ac.uk/id/eprint/10096241 |
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