Molecules in the Stellar Environment: Proceedings of IAU Colloquium No. 146 Held at Copenhagen, Denmark, May 24–29, 1993

David L. Lambert (auth.), U. G. Jørgensen (eds.)3540577475, 9783540577478, 0387577475

This volume gives and excellent survey of our present knowledge of molecular processes in stellar and proto-stellar objects. It reviews molecular physics in stellar environments and is intended to bridge the gap between astrophysicists and chemists. The topics range from the theoretical to the computational and include observational data. Among the topics treated are questions of stellar evolution, the determination of physical properties and structures , and the chemical composition of stellar protospheres. Opacity is studied in the context of various types of stellar and proto-stellar objects.

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Table of contents :
Stellar photospheres and molecules — A view from the bridge….Pages 1-28
Dominating molecules in the photospheres of cool stars….Pages 29-48
Opacity problems in cool low mass stars….Pages 49-60
Molecular opacities in cool dwarf stars….Pages 61-70
White dwarfs….Pages 71-78
Astrophysical applications of approximate methods for molecular opacities — from stars to substellar brown dwarfs….Pages 79-97
Infrared spectroscopy and molecules in circumstellar envelopes….Pages 98-112
Molecular abundances in the envelopes around evolved stars….Pages 113-133
Polvynes and polycyclic aromatic molecules in c-rich circumstellar envelopes….Pages 134-148
Improvements in the computation of grain opacity….Pages 149-162
From molecules to grains….Pages 163-185
Opacity problems in protostellar objects….Pages 186-195
Molecules in the sun and molecular data….Pages 196-208
Pressure-induced molecular absorption in stellar atmospheres….Pages 209-222
Continuous molecular opacities and photodissociation….Pages 223-233
Effects of non-local thermodynamic equilibrium (NLTE) on molecular opacities….Pages 234-249
Dissociation energies and partition functions of small molecules….Pages 250-264
Atomic opacities….Pages 265-270
Computation of the absorption coefficient for diatomic molecules….Pages 271-281
Computation of opacities for diatomic molecules….Pages 282-295
Computation of frequencies and linestrengths for triatomic molecules of astronomical interest….Pages 296-309
Computational approaches to determining accurate band strengths….Pages 310-325
Ab initio calculations of absorption coefficients of small carbon hydride molecules….Pages 326-337
The RASSCF, RASSI, and CASPT2 methods used on small molecules of astrophysical interest….Pages 338-352
The MORBID method….Pages 353-365
Experimental measurement of weak band intensities….Pages 366-375
Oscillator strengths and excited state lifetimes in metallic hydrides and oxides….Pages 376-396
The berkeley program on molecules of astrophysical interest….Pages 397-411
Production, detection and study in the infrared of unstable molecules and radicals….Pages 412-416
Laboratory millimeter wave spectroscopy of small reactive species….Pages 417-431
Table of contents for “Poster session proceedings of IAU Colloquium 146: Molecular opacities in the stellar environment”….Pages 432-433