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Molecules, ices and astronomy

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journal contribution
posted on 2023-06-08, 17:19 authored by D A Williams, Wendy BrownWendy Brown, S D Price, J M C Rawlings, S Viti
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.

History

Publication status

  • Published

File Version

  • Published version

Journal

Astronomy and Geophysics

ISSN

1366-8781

Publisher

Oxford University Press

Issue

1

Volume

48

Department affiliated with

  • Chemistry Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2014-07-22

First Open Access (FOA) Date

2014-07-22

First Compliant Deposit (FCD) Date

2014-07-22

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