2022MNRAS.510.2740J

Query : 2022MNRAS.510.2740J

2022MNRAS.510.2740J - Mon. Not. R. Astron. Soc., 510, 2740-2745 (2022/February-3)

Insights into rotational (de-)excitation of protonated tricarbon monoxide (HC3O+) by collision with helium atoms at low temperature.

JRAD A. and NAOUAI M.

Abstract (from CDS):

New 2D potential energy surface (2D-PES) of interaction between protonated tricarbon monoxide (HC3O+) in its electronic ground state (X1Σ+) and helium (He) atoms is generated. The ab initio 2D-PES is computed by adopting explicitly correlated coupled cluster approach with single, double, and perturbative triple excitation (CCSD(T)-F12a) connected to augmented-correlation consistent-polarized valence triple zeta (aVTZ) Gaussian basis set. A global minimum at (θ = 80°, R = 5.6 bohr) with a well depth of 135.67 cm–1 and a local minimum at (θ = 180°, R = 9.95 bohr) with a well depth of 113.39 cm–1 are obtained. Rotational cross-sections of propynol cation HC3O+ induced by collision with He atoms are performed involving the 11 first rotational levels for total energy up till 150 cm–1, to be under the first vibrational mode, via coupled states (CS) approach. Thermal rate coefficients are then calculated for temperature until 25 K. No clear propensity rules are obtained where |ΔJ| = 1 processes predominate.

Abstract Copyright: © 2021 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society

Journal keyword(s): ISM: abundances - ISM: molecules

Simbad objects: 1

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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 TMC-1 MoC 04 41 45.9 +25 41 27           ~ 1872 0

Query : 2022MNRAS.510.2740J

Basic data :
TMC-1 -- Molecular Cloud
Other object types: otypes_help 		PoC (MLB,[MOH94]), MoC (TMC), Cld (HCL)
ICRS coord. (ep=J2000) : 		04 41 45.9 +25 41 27 [ ] D 1983ApJ...264..517M
FK4 coord. (ep=B1950 eq=1950) : 		04 38 42.0 +25 35 45 [ ]
Gal coord. (ep=J2000) : 		174.3852 -13.4312 [ ]
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Hierarchy : number of linked objects
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HCL 2 MLB 3-28 TMC-1 [MOH94] 6

References (1872 between 1850 and 2026) (Total 1872)
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