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Molecular Hydrogen

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ISO Science Legacy

Abstract

Observations of H2 line emission in galactic and extragalactic environments obtained with the Infrared Space Observatory (ISO) are reviewed. The diagnostic capability of H2 observations is illustrated. We discuss what one has learned about such diverse astrophysical sources as photon-dominated regions, shocks, young stellar objects, planetary nebulae and starburst galaxies from ISO observations of H2 emission. In this context, we emphasise use of measured H2 line intensities to infer important physical quantities such as the gas temperature, gas density and radiation field and we discuss the different possible excitation mechanisms of H2. We also briefly consider future prospects for observation of H2 from space and from the ground.

Based on observations with ISO, an ESA project with instruments funded by ESA Member States (especially the PI countries: France, Germany, The Netherlands, and the United Kingdom), and with the participation of ISAS and NASA.

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Authors and Affiliations

  1. Osservatorio Astrofisico di Arcetri, INAF, Largo E. Fermi 5, I-50125, Firenze, Italy

    Emilie Habart, Malcolm Walmsley, Stephanie Cazaux & Roberto Maiolino

  2. Institut d’Astrophysique Spatiale, Université Paris-Sud, 91405, Orsay, France

    Laurent Verstraete, Pierre Cox, Francois Boulanger & Guillaume Pineau Des Forêts

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  1. Emilie Habart
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  2. Malcolm Walmsley
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  3. Laurent Verstraete
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  4. Stephanie Cazaux
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  5. Roberto Maiolino
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  6. Pierre Cox
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Editors and Affiliations

  1. European Southern Observatory, Garching, Munich, Germany

    Catherine Cesarsky

  2. European Space Agency, Madrid, Spain

    Alberto Salama

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Habart, E. et al. (2005). Molecular Hydrogen. In: Cesarsky, C., Salama, A. (eds) ISO Science Legacy. Springer, Dordrecht. https://doi.org/10.1007/1-4020-3844-5_3

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  • DOI: https://doi.org/10.1007/1-4020-3844-5_3

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