H-2 formation on PAHs in photodissociation regions: a high-temperature pathway to molecular hydrogen

@article{Boschman2015H2FO,
  title={H-2 formation on PAHs in photodissociation regions: a high-temperature pathway to molecular hydrogen},
  author={Leon Boschman and St{\'e}phanie Cazaux and Marco Spaans and Ronnie Hoekstra and T. Schlatholter},
  journal={Astronomy and Astrophysics},
  year={2015},
  volume={579}
}
Aims: Molecular hydrogen is the most abundant molecule in the Universe. It is thought that a large portion of H2 forms by association of hydrogen atoms to polycyclic aromatic hydrocarbons (PAHs). We model the influence of PAHs on total H2 formation rates in photodissociation regions (PDRs) and assess the effect of these formation rates on the total cloud structure. Methods: We set up a chemical kinetic model at steady state in a PDR environment and included radiative transfer to calculate the… 

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