H2 formation on interstellar dust grains: The viewpoints of theory, experiments, models and observations

Valentine Wakelam; Emeric Bron; Stephanie Cazaux; Francois Dulieu; Cécile Gry; Pierre Guillard; Emilie Habart; Liv Hornekær; Sabine Morisset; Gunnar Nyman; Valerio Pirronello; Stephen D. Price; Valeska Valdivia; Gianfranco Vidali; Naoki Watanabe

doi:10.1016/j.molap.2017.11.001

H₂ formation on interstellar dust grains: The viewpoints of theory, experiments, models and observations

Valentine Wakelam, Emeric Bron, Stephanie Cazaux, Francois Dulieu, Cécile Gry, Pierre Guillard, Emilie Habart, Liv Hornekær, Sabine Morisset, Gunnar Nyman, Valerio Pirronello, Stephen D. Price, Valeska Valdivia, Gianfranco Vidali, Naoki Watanabe

Department of Physics

Research output: Contribution to journal › Review article › peer-review

179 Scopus citations

Abstract

Molecular hydrogen is the most abundant molecule in the universe. It is the first one to form and survive photo-dissociation in tenuous environments. Its formation involves catalytic reactions on the surface of interstellar grains. The micro-physics of the formation process has been investigated intensively in the last 20 years, in parallel of new astrophysical observational and modeling progresses. In the perspectives of the probable revolution brought by the future satellite JWST, this article has been written to present what we think we know about the H₂ formation in a variety of interstellar environments.

Original language	English (US)
Pages (from-to)	1-36
Number of pages	36
Journal	Molecular Astrophysics
Volume	9
DOIs	https://doi.org/10.1016/j.molap.2017.11.001
State	Published - Dec 2017

Keywords

Astrochemistry
Grain surface chemistry
Interstellar medium
Molecular hydrogen

ASJC Scopus subject areas

Astronomy and Astrophysics
Spectroscopy
Physical and Theoretical Chemistry
Space and Planetary Science

Access to Document

10.1016/j.molap.2017.11.001

Cite this

Wakelam, V., Bron, E., Cazaux, S., Dulieu, F., Gry, C., Guillard, P., Habart, E., Hornekær, L., Morisset, S., Nyman, G., Pirronello, V., Price, S. D., Valdivia, V., Vidali, G., & Watanabe, N. (2017). H₂ formation on interstellar dust grains: The viewpoints of theory, experiments, models and observations. Molecular Astrophysics, 9, 1-36. https://doi.org/10.1016/j.molap.2017.11.001

Wakelam, V, Bron, E, Cazaux, S, Dulieu, F, Gry, C, Guillard, P, Habart, E, Hornekær, L, Morisset, S, Nyman, G, Pirronello, V, Price, SD, Valdivia, V, Vidali, G & Watanabe, N 2017, 'H₂ formation on interstellar dust grains: The viewpoints of theory, experiments, models and observations', Molecular Astrophysics, vol. 9, pp. 1-36. https://doi.org/10.1016/j.molap.2017.11.001

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abstract = "Molecular hydrogen is the most abundant molecule in the universe. It is the first one to form and survive photo-dissociation in tenuous environments. Its formation involves catalytic reactions on the surface of interstellar grains. The micro-physics of the formation process has been investigated intensively in the last 20 years, in parallel of new astrophysical observational and modeling progresses. In the perspectives of the probable revolution brought by the future satellite JWST, this article has been written to present what we think we know about the H2 formation in a variety of interstellar environments.",

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T2 - The viewpoints of theory, experiments, models and observations

AU - Wakelam, Valentine

AU - Bron, Emeric

AU - Cazaux, Stephanie

AU - Dulieu, Francois

AU - Gry, Cécile

AU - Guillard, Pierre

AU - Habart, Emilie

AU - Hornekær, Liv

AU - Morisset, Sabine

AU - Nyman, Gunnar

AU - Pirronello, Valerio

AU - Price, Stephen D.

AU - Valdivia, Valeska

AU - Vidali, Gianfranco

AU - Watanabe, Naoki

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AB - Molecular hydrogen is the most abundant molecule in the universe. It is the first one to form and survive photo-dissociation in tenuous environments. Its formation involves catalytic reactions on the surface of interstellar grains. The micro-physics of the formation process has been investigated intensively in the last 20 years, in parallel of new astrophysical observational and modeling progresses. In the perspectives of the probable revolution brought by the future satellite JWST, this article has been written to present what we think we know about the H2 formation in a variety of interstellar environments.

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KW - Grain surface chemistry

KW - Interstellar medium

KW - Molecular hydrogen

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