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  Quenching rates and critical densities of c-C3H2

Khalifa, M. B., Sahnoun, E., Spezzano, S., Wiesenfeld, L., Hammami, K., Dulieu, O., et al. (2020). Quenching rates and critical densities of c-C3H2. Cambridge, UK: Cambridge University Press.

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Quenching rates and critical densities of c-C3H2.pdf (Any fulltext), 233KB
 
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 Creators:
Khalifa, Malek Ben, Author
Sahnoun, Emna, Author
Spezzano, Silvia1, Author              
Wiesenfeld, Laurent, Author
Hammami, Kamel, Author
Dulieu, Olivier, Author
Caselli, Paola1, Author              
Affiliations:
1Center for Astrochemical Studies at MPE, MPI for Extraterrestrial Physics, Max Planck Society, ou_1950287              

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 Abstract: Cyclopropenylidene,, is a simple hydrocarbon, ubiquitous in astrophysical gases, and possessing a permanent electric dipole moment. Its readily observed multifrequency rotational transitions make it an excellent probe for the physics and history of interstellar matter. The collisional properties of with He are presented here. We computed the full Potential Energy Surfaces, and we perform quantum scattering in order to provide rates of quenching and excitation for low to medium temperature regimes. We discuss issues with the validity of the usual Local Thermodynamical Equilibrium assumption, and also the intricacies of the spectroscopy of an asymmetric top. We present the wide range of actual critical densities, as recently observed.

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Language(s): eng - English
 Dates: 2020-10-12
 Publication Status: Published online
 Pages: -
 Publishing info: Cambridge, UK : Cambridge University Press
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: Other: LOCALID: Reihe: IAU...350
 Degree: -

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Title: 350nd Symposium of the International Astronomical Union: Laboratory Astrophysics: From Observations to Interpretation
Place of Event: Cambridge, United Kingdom
Start-/End Date: 2019-04-14 - 2019-04-19

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Title: Proceedings of the International Astronomical Union
Source Genre: Series
 Creator(s):
Salama Farid, Editor              
Linnartz Harold, Author              
Affiliations:
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Publ. Info: Cambridge, UK : Cambridge University Press
Pages: - Volume / Issue: 15/s350 Sequence Number: - Start / End Page: 148 - 151 Identifier: ISSN: 1743-9213