Chemical sensitivity to the ratio of the cosmic-ray ionization rates of He and H2 in dense clouds

Aim: To determine whether or not gas-phase chemical models with homogeneous and time-independent physical conditions explain the many observed molecular abundances in astrophysical sources, it is crucial to estimate the uncertainties in the calculated abundances and compare them with the observed ab...

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Veröffentlicht in:	arXiv.org 2006-08
Hauptverfasser:	Wakelam, Valentine, Herbst, Eric, Selsis, Franck, Massacrier, Gérard
Format:	Artikel
Sprache:	eng
Schlagworte:	Bifurcations Bistability Cosmic rays Gaussian distribution Helium Ionization Mathematical models Organic chemistry Parameters Sensitivity Time dependence Uncertainty
Online-Zugang:	Volltext
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