Hostname: page-component-7bb8b95d7b-2h6rp Total loading time: 0 Render date: 2024-09-18T03:21:16.600Z Has data issue: false hasContentIssue false
  • English
  • Français

Excited Hydrogen Chemistry in Protostellar Outflows

Published online by Cambridge University Press:  07 August 2017

J.M.C. Rawlings ,
J.E. Drew  and
M. J. Barlow
J.M.C. Rawlings
Affiliation:
Department of Physics Nuclear Physics Laboratory Keble Road, Oxford OX1 3RH, UK
J.E. Drew
Affiliation:
Department of Physics Nuclear Physics Laboratory Keble Road, Oxford OX1 3RH, UK
M. J. Barlow
Affiliation:
Department of Physics and Astronomy University College London Gower street, London WC1E 6BT, UK

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Chemical models of protostellar and other outflows have been reassessed in the light of new chemical data. In particular, reactions involving excited hydrogen (2s,p) are shown to be important in hot, dense outflows. The H(n=2) + H → H2 + hv reaction is much less of a contributor to the H2 formation rate than the recently measured H(n=2) + H → H2+ + e- reaction, providing conditions allow the 0.75eV endothermicity of this reaction to be overcome.

Type
Near Stellar Environments
Information
Symposium - International Astronomical Union , Volume 150: Astrochemistry of Cosmic Phenomena , 1992 , pp. 387 - 388
Copyright
Copyright © Kluwer 1992 

References

REFERENCES

Drew, J.E. 1989, Astrophys. J. Suppl. , 71 267 Google Scholar
Glassgold, A.E., Mamon, G.A. & Huggins, P.J. 1989, Astrophys. J. , 336 L29 Google Scholar
Latter, W.B. & Black, J.H. 1991, Astrophys. J. , 373 161 Google Scholar
Rawlings, J.M.C., Williams, D.A. & Canto, J. 1988, Mon. Not. R. ast. Soc. , 230 695 CrossRefGoogle Scholar
Schmutz, W., et al. 1990, Astrophys. J. , 355 255 Google Scholar
Urbain, X., Cornet, A., Brouillard, F. & Giusti-Suzor, A. 1991, Phys. Rev. Lett. , 66 1685 Google Scholar