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Silicates—Space and Laboratory

Published online by Cambridge University Press:  21 March 2006

Thomas Henning ,
Harald Mutschke  and
Cornelia Jäger
Thomas Henning
Affiliation:
Max Planck Institute for Astronomy, Königstuhl 17, D-69117 Heidelberg, Germany email: henning@mpia.de
Harald Mutschke
Affiliation:
Astrophysical Institute and University Observatory, Schillergässchen 2, D-07745 Jena, Germany email: mutschke@astro.uni-jena.de, conny@astro.uni-jena.de
Cornelia Jäger
Affiliation:
Astrophysical Institute and University Observatory, Schillergässchen 2, D-07745 Jena, Germany email: mutschke@astro.uni-jena.de, conny@astro.uni-jena.de
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Abstract

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In this paper, we will review recent progress made in the understanding of cosmic silicates and the experimental characterization of relevant analogue materials. We will introduce the main structural properties of silicates. Then we will discuss recent infrared observations with a special emphasis on protoplanetary disks and AGNs. In the experimental section we will describe the optical properties of silicate grains. Here we will concentrate on fundamental optical data and the dependence of the optical behavior on particle shape and temperature.

Keywords

astrochemistry — cosmic dust — planetary systems: protoplanetary disks — galaxies: quasars