Rotational (de)-excitation of HMgNC in collision with He

被引：5

作者：

Amor, M. A. ^{[1
]}

Hammami, K. ^{[1
]}

Wiesenfeld, L. ^{[2
]}

机构：

[1] Univ Tunis El Manar, Fac Sci, Dept Phys, LSAMA, Tunis 1060, Tunisia

[2] Univ Paris Saclay, CNRS, Lab Aime Cotton, F-91405 Orsay, France

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2021年 / 506卷 / 01期

关键词：

molecular data; radiative transfer; scattering; ISM: molecules; POTENTIAL-ENERGY SURFACES; RATE COEFFICIENTS; SCATTERING; IRC+10216; INTERSTELLAR; SPECTROSCOPY; PROPENSITY; EXCITATION; MOLECULES; ACCURACY;

D O I：

10.1093/mnras/stab1757

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Potential energy surface (PES) for the collision between HMgNC and He are evaluated using the high-accuracy CCSD(T)-F12 ab initio method. This PES leads to conduct quantum dynamical scattering calculations of the rotational and hyperfine (de)-excitations rate coefficients for temperatures up to 200 K. In order to evaluate the impact of the computed data, we performed radiative transfer computations of the brightness and excitation temperatures for selected observed j = 8 - 7 transition.

引用

页码：957 / 962

页数：6

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