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Astrophysics and Space Science

, Volume 279, Issue 1–2, pp 139–147 | Cite as

Modelling the dust around Sakurai's Object

  • V.H. Tyne
  • A. Evans
  • B. Smalley
  • T.R. Geballe
  • S.P.S. Eyres
Article

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.

infrared emission IR spectra dust development stars: individual (Sakurai's Object) 

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Copyright information

© Kluwer Academic Publishers 2002

Authors and Affiliations

  • V.H. Tyne
    • 1
  • A. Evans
    • 1
  • B. Smalley
    • 1
  • T.R. Geballe
    • 2
  • S.P.S. Eyres
    • 3
  1. 1.Physics DepartmentKeele UniversityKeeleUK
  2. 2.Gemini ObservatoryHiloUSA
  3. 3.Centre for AstrophysicsUniversity of Central LancashirePreston, LancashireUK

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