Experiments on molecular hydrogen formation on cold ISM dust

Lisseth Gavilan, Jean Louis Lemaire, Gianfranco Vidali

Research output: Chapter in Book/Report/Conference proceedingConference contribution


We investigate the formation of molecular hydrogen on ISM dust grains at T < 10 K. We use laboratory methods to detect newly formed D2 that is rovibrationally excited at v=4, J=2. We discover that recombination is catalyzed by pre-existing molecules on the dust surface and present this an important process in the coldest regions of the ISM.

Original languageEnglish (US)
Title of host publicationMolecular Gas, Dust, and Star Formation in Galaxies
EditorsTony Wong, Jurgen Ott
Number of pages1
StatePublished - Aug 1 2012
Externally publishedYes

Publication series

NameProceedings of the International Astronomical Union
ISSN (Print)1743-9213
ISSN (Electronic)1743-9221


  • ISM: atoms
  • ISM: molecules
  • astrochemistry
  • dust
  • extinction

ASJC Scopus subject areas

  • Medicine (miscellaneous)
  • Astronomy and Astrophysics
  • Nutrition and Dietetics
  • Public Health, Environmental and Occupational Health
  • Space and Planetary Science

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