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H2 in the interstellar medium

11 January 2018

Prof Stephen D. Price

Many congratulations to Professor Stephen Price who has recently co-authorised on "H2 formation on interstellar dust grains: The viewpoints of theory, experiments, models and observations" which has been highlighted in Elsevier.

" "Lots of research chemists are keen to say that their chosen reactions are “vitally important”.   Yet it is hard to argue against the fact that H + H -> H2, the reaction  synthesizing the most abundant molecule in the Universe, is really the “most important” chemical reaction there can be!  It’s great to have contributed to helping understand such a fundamental chemical process".  Professor Stephen Price.

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.

Article details:

Free online until 11th June 2018

Wakelam, V. et al.: “H2 formation on interstellar dust grains: The viewpoints of theory, experiments, models and observations,” Molecular Astrophysics (2018)