Modelling the dust around Sakurai's Object |
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| Authors: | VH Tyne A Evans B Smalley TR Geballe SPS Eyres |
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| Institution: | (1) Physics Department, Keele University, Keele, Staffordshire, ST5 5BG, UK;(2) Gemini Observatory, Hilo, HI 96720, USA;(3) Centre for Astrophysics, University of Central Lancashire, Preston, Lancashire, PR1 2HE, UK |
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| Abstract: | We follow the evolution of the infrared excess and the dustshell of Sakurai's Object by modelling the dust emission. The optical depth,dust temperature, and shell thickness parameters from the models are presented.Fits of DUSTY models to infrared spectra between 1997 May and 1999September illustrate the development of the dust from small grains to a rangeof grain sizes with an almost constant 60% graphite – 40% amorphous carbonmixture. The size of the infrared emitting region continues to growand may now be big enough to resolve. This may help to answerquestions such as the morphology of the dust shell, and whether the dustshell is `blobby' or smooth. |
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| Keywords: | infrared emission IR spectra dust development stars: individual (Sakurai's Object) |
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