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Modelling complex organic molecules in dense regions: Eley–Rideal and complex induced reaction.
- Source :
- Monthly Notices of the Royal Astronomical Society; Jan2015, Vol. 447 Issue 4, p4004-4017, 14p
- Publication Year :
- 2015
-
Abstract
- Recent observations have revealed the existence of complex organic molecules (COMs) in cold dense cores and pre-stellar cores. The presence of these molecules in such cold conditions is not well understood and remains a matter of debate since the previously proposed ‘warm-up’ scenario cannot explain these observations. In this paper, we study the effect of Eley–Rideal and complex induced reaction mechanisms of gas-phase carbon atoms with the main ice components of dust grains on the formation of COMs in cold and dense regions. Based on recent experiments, we use a low value for the chemical desorption efficiency (which was previously invoked to explain the observed COM abundances). We show that our introduced mechanisms are efficient enough to produce a large amount of COMs in the gas phase at temperatures as low as 10 K. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00358711
- Volume :
- 447
- Issue :
- 4
- Database :
- Complementary Index
- Journal :
- Monthly Notices of the Royal Astronomical Society
- Publication Type :
- Academic Journal
- Accession number :
- 101039013
- Full Text :
- https://doi.org/10.1093/mnras/stu2709