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Comets and Circumstellar Dust

Published online by Cambridge University Press:  30 March 2016

C. Waelkens  and
L.B.F.M. Waters
C. Waelkens
Affiliation:
Instituut voor Sterrenkunde K. U.Leuven, Celestijnenlaan 200B, 3001 Leuven, Belgium
L.B.F.M. Waters
Affiliation:
Sterrenkundig Instituut Anton Pannekoek, Kruislaan 403, 1098 SJ Amsterdam, The Netherlands

Abstract

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Spectra obtained with the Infrared Space Observatory ISO of the dusty disks surrounding young stars display several characteristics which suggest the presence of large amounts of cometary material during these early stages. Of special interest are crystalline silicates and hydrated silicates, which surprisingly appear to be present already in cool material surrounding young objects. Another surprise is the occurrence of cometary features in the disks surrounding some binary post-AGB stars.

Type
II. Joint Discussions
Information
Highlights of Astronomy , Volume 12: Highlights of Astronomy. As presented at the XXIVth General Assembly of the IAU, 2000 , 2002 , pp. 233 - 236
Copyright
Copyright © Astronomical Society of Pacific 2002

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