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Crystalline Silicates in Space

Published online by Cambridge University Press:  30 March 2016

L.B.F.M. Waters  and
F.J. Molster
L.B.F.M. Waters
Affiliation:
Astronomical Institute, University of Amsterdam, Kruislaan 403, NL-1098 SJ Amsterdam, The Netherlands
F.J. Molster
Affiliation:
School of Materials Science and Engineering, Georgia Tech, Atlanta, GA 30332-0245, U.S.A.and MVA Inc, Norcross, GA 30093, U.S.A.

Abstract

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An overview is given of the occurrence and properties of crystalline silicates in space. Crystalline silicates are found in circumstellar shells of both young and evolved stars, and are present in Solar System comets. These silicates are Mg-rich and Fe-poor, in contrast to amorphous silicates. We discuss the formation mechanism of crystalline silicates and the apparent lack of these grains in the interstellar medium.

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. 48 - 51
Copyright
Copyright © Astronomical Society of Pacific 2002

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