2022MNRAS.513.6152K

Query : 2022MNRAS.513.6152K

2022MNRAS.513.6152K - Mon. Not. R. Astron. Soc., 513, 6152-6157 (2022/July-2)

New de-excitation rates of the open shell dicarbon monoxide C2O(X3 Σ–) in collision with He(1S).

KHADRI F., HACHANI L., ELABIDI H. and HAMMAMI K.

Abstract (from CDS):

In order to derive accurate physical conditions of the interstellar clouds (such as TMC-1) from the rotational transitions of C2O, collisional rates are needed. Based on a new two-dimensional potential energy surface (PES), we report a new rate coefficients calculation of C2O(X3Σ–) induced by collision with He. This PES was obtained from the explicitly correlated restricted open-shell coupled cluster with single, double, and perturbative triple excitation (rccsd(t)-f12) ab initio approach associated with aug-cc-pVTZ basis sets. The C2O-He PES presents one minimum below its dissociation limit with a well depth of 42.376 cm–1. The close-coupling quantum time-independent formalism was used to derive cross sections for E <= 370 cm–1 and N <= 10. De-excitation rate coefficients are obtained for thermal temperature below 80 K.

Abstract Copyright: © 2022 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society

Journal keyword(s): molecular data - radiative transfer - scattering - 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.513.6152K

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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