PACS Spectroscopy of OH/IR Stars
| Authors |
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| Publication date | 2011 |
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| Book title | Why Galaxies Care about AGB Stars II: Shining Examples and Common Inhabitants |
| Book subtitle | Proceedings of a conference held at University Campus, Viena, Austria, 16-20 August 2010 |
| ISBN |
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| ISBN (electronic) |
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| Series | Astronomical Society of the Pacific conference series |
| Event | Why Galaxies Care about AGB Stars II |
| Pages (from-to) | 341-342 |
| Publisher | San Francisco: Astronomical Society of the Pacific |
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| Abstract |
Observations of high-excitation molecular emission lines can greatly increase our understanding of AGB winds, as they trace the innermost regions of the circumstellar envelope. The PACS spectrometer on-board the Herschel Space Observatory provides for the first time the spectral resolution and sensitivity necessary to trace these lines. We report on the first modelling efforts of a PACS spectral scan for the OH/IR star V669 Cas. Central to our methodology is the consistent treatment of both dust and gas by using a line radiative transfer code and a continuum radiative transfer code conjointly. Water emission lines are found to be extremely sensitive to the dust-to-gas ratio, emphasizing the need of consistent modelling for dust and gas.
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| Document type | Conference contribution |
| Language | English |
| Published at | http://aspbooks.org/custom/publications/paper/445-0341.html |
| Other links | https://ui.adsabs.harvard.edu/abs/2011ASPC..445..341L/abstract |
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