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Theory of Gas Phase Scattering and Reactivity for Astrochemistry
Laurent Wiesenfeld, Wing-Fai Thi, Paola Caselli +13
Because of the very peculiar conditions of chemistry in many astrophysical gases (low densities, mostly low temperatures, kinetics-dominated chemical evolution), great efforts have…
On the Inference of the Cosmic Ray Ionization Rate from the HCO-to-DCO Abundance Ratio: The Effect of Nuclear Spin
Christopher N. Shingledecker, Jennifer B. Bergner, Romane Le Gal +3
The chemistry of dense interstellar regions was analyzed using a time-dependent gas-grain astrochemical simulation and a new chemical network that incorporates deuterated chemistry…
The ortho-to-para ratio of interstellar NH: Quasi-classical trajectory calculations and new simulations
Romane Le Gal, Eric Herbst, Changjian Xie +2
Based on recent results, the ortho-to-para ratio (OPR) of NH has been measured towards the following high-mass star-forming regions: W31C (G10.6-0.4), W49N (G43.2-0.…
First detection of gas-phase methanol in a protoplanetary disk
Catherine Walsh, Ryan A. Loomis, Karin I. Oberg +7
The first detection of gas-phase methanol in a protoplanetary disk (TW Hya) is presented. In addition to being one of the largest molecules detected in disks to date, methanol is a…
CSO and CARMA Observations of L1157. II. Chemical Complexity in the Shocked Outflow
Andrew M. Burkhardt, Niklaus M. Dollhopf, Joanna F. Corby +8
L1157, a molecular dark cloud with an embedded Class 0 protostar possessing a bipolar outflow, is an excellent source for studying shock chemistry, including grain-surface chemistr…
Unified Microscopic-Macroscopic Monte Carlo Simulations of Complex Organic Molecule Chemistry in Cold Cores
Qiang Chang, Eric Herbst
The recent discovery of methyl formate and dimethyl ether in the gas phase of cold cores with temperatures as cold as 10 K challenges our previous astrochemical models concerning t…