Contents of: VI/111/./abstract/JFIX_PROP_1.abs

The following document lists the file abstract/JFIX_PROP_1.abs from catalogue VI/111.
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 I propose to use the ISO SWS to obtain pairs of spectra of variable
 circumstellar silicate dust shells. I will use each pair of
 spectra along with radiative equilibrium dust shell models to derive
 the unique combination of dust shell structures (stellar temperature,
 ratio of inner shell radius to stellar radius, and optical thickness
 at a standard wavelength) and dust opacity spectrum which can match
 both the brighter and fainter of the pair of spectra of the shell.
 I request enough telescope time to obtain pairs of spectra for three
 different circumstellar dust shells.  By comparing the resulting
 opacity spectra, I can investigate suggestions that there is a
 systematic change in particle opacity spectrum from thin to thick
 circumstellar shells.

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