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Rate constants for the formation of CS by radiative association

Journal Article · · Monthly Notices of the Royal Astronomical Society
 [1];  [2];  [3];  [4]
  1. Pennsylvania State Univ., Reading, PA (United States)
  2. Harvard-Smithsonian Center for Astrophysics, Cambridge, MA (United States)
  3. Univ. of Georgia, Athens, GA (United States)
  4. Harvard-Smithsonian Center for Astrophysics, Cambridge, MA (United States); Queen's Univ., Belfast, Northern Ireland (United Kingdom)
+ Show Author Affiliations

Rate constants for the formation of carbon monosulfide (CS) by radiative association are calculated using accurate molecular data. The rate constants include both direct and indirect formation processes. The indirect processes (inverse rotational and electronic predissociation) are evaluated for conditions of local thermodynamic equilibrium (LTE) and also in the non-LTE limit of zero radiation temperature and atomic density. Phenomenological rate constants for CS formation in realistic astrophysical environments are expected to lie in-between these limiting cases. An analytic formula is used to fit the rate constants for convenient use in astrophysical models. The impact of the results on various astrophysical environments is briefly discussed.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)
Sponsoring Organization:
USDOE
OSTI ID:
1543963
Journal Information:
Monthly Notices of the Royal Astronomical Society, Journal Name: Monthly Notices of the Royal Astronomical Society Journal Issue: 4 Vol. 479; ISSN 0035-8711
Publisher:
Royal Astronomical SocietyCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (4)

Semiclassical methods for calculating radiative association rate constants for different thermodynamic conditions: Application to formation of CO, CN, and SiN journal June 2019
Rovibrational transition properties of the X 1 Σ + and A 1 Π states of carbon monosulfide journal May 2020
Dicarbon Formation in Collisions of Two Carbon Atoms journal April 2019
Dicarbon formation in collisions of two carbon atoms text January 2019

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Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
Astronomy & Astrophysics