Chemical Evolution of the Universe

About this book

Faraday Discussion 133 took place at Abbaye de St Jacut , St Jacut de la Mer, Brittany, France from 24 April 2006 - 26 April 2006. It was only the fourth time that a Discussion has been held outside the UK.

The meeting focussed on recent astronomical observations of molecules in various regions and eras of the Universe, and on describing the processes that determine the chemistry. These processes include gas phase neutral exchanges and ion-molecule reactions, surface reactions on dust grains, and the radiative processing of dirty ices.

Contents

Introductory Lecture The growth of molecular complexity in the Universe; Chemistry and cosmology; Extragalactic chemistry of molecular gas: lessons from the local universe; Raman association of H2 in the early universe; Are gas-phase models of interstellar chemistry tenable? The case of methanol; Observations of chemical differentiation in clumpy molecular clouds; General Discussion; Meteorite nanoparticles as models for interstellar grains: Synthesis and preliminary characterisation; Laboratory investigations of the role of the grain surface in astrochemical models; The formation of interstellar molecules via reactions on dust grain surfaces; The temperature-dependence of rapid low temperature reactions: experiment, understanding and prediction; Crossed-beam studies on the dynamics of the C + C2H2 interstellar reaction leading to linear and cyclic C3H + H and C3 + H2; Dissociative recombination of protonated methanol; General Discussion; Photoprocesses in protoplanetary disks; Reaction dynamics of carbon-bearing radicals in circumstellar envelopes of carbon stars; Carbon molecules in space: from astrochemistry to astrobiology; Laboratory measurements of the recombination of PAH ions with electrons: implications for the PAH charge state in interstellar clouds; Structure of vapour deposited adenine on a nanostructured perovskite surface studied by STM; VUV spectroscopy and photo-processing of astrochemical ices: an experimental study; Comparative studies of O2 and N2 in pure, mixed and layered CO ices; General Discussion; New trends in cometary chemistry; Between heaven and Earth: the exploration of Titan; Hydrogen cyanide polymers, comets and the origin of life; Small-scale-structure of the interstellar medium probed through diffuse band observations; Polycyclic aromatic hydrocarbons, carbon nanoparticles and the diffuse interstellar bands; General Discussion; Concluding Remarks Future directions in astrochemistry

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