Glycolaldehyde formation via the dimerization of the formyl radical

Woods, Paul M, Slater, Ben, Raza, Zamaan, Viti, Serena, Brown, Wendy A and Burke, Daren J (2013) Glycolaldehyde formation via the dimerization of the formyl radical. The Astrophysical Journal, 777 (2). p. 90. ISSN 0004-637X

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Abstract

Glycolaldehyde, the simplest monosaccharide sugar, has recently been detected in low- and high-mass star-forming cores. Following our previous investigation into glycolaldehyde formation, we now consider a further mechanism for the formation of glycolaldehyde that involves the dimerization of the formyl radical, HCO. Quantum mechanical investigation of the HCO dimerization process upon an ice surface is predicted to be barrierless and therefore fast. In an astrophysical context, we show that this mechanism can be very efficient in star-forming cores. It is limited by the availability of the formyl radical, but models suggest that only very small amounts of CO are required to be converted to HCO to meet the observational constraints.

Item Type: Article
Keywords: astrochemistry; circumstellar matter; ISM: abundances; ISM: clouds; ISM: molecules; stars: formation
Schools and Departments: School of Life Sciences > Chemistry
Subjects: Q Science > QD Chemistry > QD0450 Physical and theoretical chemistry
Depositing User: Catrina Hey
Date Deposited: 04 Feb 2014 17:02
Last Modified: 15 Mar 2017 14:33
URI: http://sro.sussex.ac.uk/id/eprint/47475

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