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Spatial Distributions of Multiple Dust Components in the PPN/PN Dust Shells

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Abstract

We investigate spatial distributions of specific dust components in the circumstellar shells of a proto-planetary nebula candidate, HD 179821, IRAS 19114+0002 and a planetary nebula, BD + 30̂ 3639, by means of spectral imaging. With high-resolution ground-based images and ISO spectra in the mid-infrared, we can derive ``dust feature only'' maps by subtracting synthesized continuum maps from the observed images at the feature wavelength. Such spatially detailed information will help to develop models for the evolution of dust grains around evolved stars.


Publication:

Astrophysics and Space Science Library

Pub Date:
August 2001
DOI:

10.1007/978-94-015-9688-6_54

10.48550/arXiv.astro-ph/0010208

arXiv:
arXiv:astro-ph/0010208
Bibcode:
2001ASSL..265..339U
Keywords:
  • Astrophysics
E-Print:
4 pages + 7 figures, to appear in the proceedings of the conference, "Post-AGB Objects (proto-planetary nebulae) as a Phase of Stellar Evolution", Torun, Poland, July 5-7, 2000, eds. R. Szczerba, R. Tylenda, and S.K. Gorny. Figures have been degraded to minimize the total file size