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Chemical Evolution of Turbulent Multiphase Molecular Clouds

Published online by Cambridge University Press:  04 September 2018

Valeska Valdivia Open the ORCID record for Valeska Valdivia [Opens in a new window] ,
Patrick Hennebelle ,
Benjamin Godard ,
Maryvonne Gerin ,
Pierre Lesaffre  and
Jacques Le Bourlot
Valeska Valdivia
Affiliation:
Université Paris Diderot, AIM, Sorbonne Paris Cité, CEA, CNRS, F-91191 Gif-sur-Yvette, France. email: valeska.valdivia@cea.fr
Patrick Hennebelle
Affiliation:
Université Paris Diderot, AIM, Sorbonne Paris Cité, CEA, CNRS, F-91191 Gif-sur-Yvette, France. email: valeska.valdivia@cea.fr
Benjamin Godard
Affiliation:
Laboratoire de radioastronomie, LERMA, Observatoire de Paris, École Normale Supérieure (UMR 8112 CNRS), 24 rue Lhomond, 75231 Paris Cedex 05, France
Maryvonne Gerin
Affiliation:
Laboratoire de radioastronomie, LERMA, Observatoire de Paris, École Normale Supérieure (UMR 8112 CNRS), 24 rue Lhomond, 75231 Paris Cedex 05, France
Pierre Lesaffre
Affiliation:
Laboratoire de radioastronomie, LERMA, Observatoire de Paris, École Normale Supérieure (UMR 8112 CNRS), 24 rue Lhomond, 75231 Paris Cedex 05, France
Jacques Le Bourlot
Affiliation:
Laboratoire de radioastronomie, LERMA, Observatoire de Paris, École Normale Supérieure (UMR 8112 CNRS), 24 rue Lhomond, 75231 Paris Cedex 05, France
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Abstract

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Molecular clouds are essentially made up of atomic and molecular hydrogen, which in spite of being the simplest molecule in the ISM plays a key role in the chemical evolution of molecular clouds. Since its formation time is very long, the H2 molecules can be transported by the turbulent motions within the cloud toward low density and warm regions, where its enhanced abundance can boost the abundances of molecules with high endothermicities.

We present high resolution simulations where we include the evolution of the molecular gas under the effect of the dynamics, and we analyze its impact on the abundance of CH+.

Keywords

ISM: cloudsISM: moleculesMHDturbulence
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 13 , Symposium S332: Astrochemistry VII: Through the Cosmos from Galaxies to Planets , March 2017 , pp. 242 - 248
Copyright
Copyright © International Astronomical Union 2018 

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