Molecules, ices and astronomy

Williams, D A, Brown, W A, Price, S D, Rawlings, J M C and Viti, S (2007) Molecules, ices and astronomy. Astronomy and Geophysics, 48 (1). ISSN 1366-8781

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Abstract

Molecules in interstellar gas and in interstellar ices play a fundamental role in astronomy. However, the formation of the simplest molecule, molecular hydrogen, is still not fully understood. Similarly, although interstellar ice analogues have received much attention in the laboratory, the evolution of ices in the interstellar medium still requires further study. At UCL we have developed two separate experiments to address these issues and explore the following questions: How is H formed on dust-grain surfaces? What is the budget between internal, kinetic and surface energies in the formation process? What are the astronomical consequences of these results? For ices, we ask: How do molecules desorb from pure and from mixed ices in regions warmed by newly formed stars? What can molecules released from ices tell us about the star-formation process? We put our results in the context of other laboratory work and we describe their application to current problems in astronomy.

Item Type: Article
Schools and Departments: School of Life Sciences > Chemistry
Subjects: Q Science
Depositing User: Deeptima Massey
Date Deposited: 22 Jul 2014 12:42
Last Modified: 23 Mar 2017 16:12
URI: http://sro.sussex.ac.uk/id/eprint/48698

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