Dust and gas in protoplanetary discs [Elektronische Ressource] / von Dmitry Semenov

Dust and Gas in Protoplanetary DiscsDissertationzur Erlangung des akademischen Gradesdoctor rerum naturalium (Dr. rer. nat.)vorgelegt dem Rat der Physikalisch Astronomischen Fakultat¨der Friedrich Schiller Universit at¨ Jenavon Diplom Astronom Dmitry Semenovgeboren am 20 Februar 1978 in Sankt Petersburg (Rußland)Gutachter1. Prof. Dr. Thomas Henning (Jena/Heidelberg)2. Prof. Dr. Tom Millar (Manchester, UK)3. Prof. Dr. Ewine van Dishoeck (Leiden, NL)Tag des Rigorosums: 2005Tag der o¨entlichen Verteidigung: 2005”Do not keep saying to yourself, if you can possibly avoid it, ’But how can it be like that?’ becauseyou will get ’down the drain’ into a blind alley from which nobody has yet escaped. Nobody knowshow it can be like that.”Richard Feynman”Astronomy”, Alain of Lille (XII century)4Contents1 Introduction 12 Opacities for protoplanetary discs 32.1 A link between disc hydro models and opacities . . . . . . . . . . . . . . . . . . . . 32.2 The model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62.2.1 Dust opacities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62.2.2 Gas opacities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122.2.3 Opacity table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132.3 Computed monochromatic and mean opacities . . . . . . . . . . . . . . . . . . . . . 142.3.1 Opacities and dust models . . . . . . . . . . . . . . . . . .