Mass loss and dust formation around oxygen-rich evolved stars

Details Mass loss and dust formation around oxygen-rich evolved stars Mass loss and dust formation around oxygen-rich evolved stars

Sep 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002phdt..........k&link_type=abstract

Ph. D. Thesis, University of Amsterdam.

Physics

3

Dust Formation, Mass Loss, Agb Stars, Mineralogy, Silicates, Carbonates, Infrared, Iso, Carbon Monoxide, Submm

Scientific paper

This work is a study of the formation of dust around oxygen-rich evolved stars, in correlation with the physical conditions in this environment. ISO SWS and LWS spectroscopy has been analysed, and several mineral and molecular species are identified. For two evolved stars: OH/IR star OH 127.8+0.0 and planetary nebula NGC 6302, the spectral energy distribution has been fitted. Metallic iron and carbonates are identified as new dust components. In addition, the degree of crystallinity of silicates has been studied as a function of mass-loss rate. Finally, submm observations of rotational transitions of CO have been analysed to study the mass-loss history of oxygen-rich AGB stars.

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