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Mineralogy of an OH/IR superwind

Robin Lombaert (Institutionen för rymd- och geovetenskap, Onsala rymdobservatorium) ; B.L. De Vries ; M. Hillen
Journal of Physics: Conference Series (1742-6588). Vol. 728 (2016), 2,
[Konferensbidrag, refereegranskat]

The mineralogy of the dense, dusty superwind of OH/IR stars can provide important constraints for understanding the dust formation process as well as the acceleration of the wind. We aim to model the ISO-SWS spectrum of the OH/IR star OH 30.1-0.7 in detail by reproducing the slope of the spectral energy distribution in the continuum regions between 3 and 8 μm and 12 and 15 μm. In addition to metallic Fe, we find that larger amorphous olivine grains of size on the order of 1 μm may also contribute to the continuum emission. We report here on the preliminary model results and discuss their validity given the important assumption of a 1D spherically symmetric stellar wind.



Denna post skapades 2016-11-02.
CPL Pubid: 244651

 

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Institutioner (Chalmers)

Institutionen för rymd- och geovetenskap, Onsala rymdobservatorium

Ämnesområden

Astronomi, astrofysik och kosmologi

Chalmers infrastruktur