Abstract
We describe how a reduction technique can be applied to a chemical model of a typical protoplanetary disk in order to determine the primary chemical processes, relevant to the evolution of the disk ionization degree. It is shown that the number of involved species and reactions significantly varies throughout the disk, serving as a direct indicator for the chemical complexity. Additionally, we discuss where in the disk the chemical equilibrium approach can be used to compute the fractional ionization.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
S.A. Balbus & J.F. Hawley: ApJ 376, 214, (1991)
Ch. Gammie: ApJ 457, 355, (1996)
D.A. Semenov, D.S. Wiebe, & Th. Henning: A&A, in press, (2004)
P. D’Alessio, N. Calvet, L. Hartmann, S. Lizano, & J. Canto: ApJ 527, 893, (1999)
T.J. Millar, P.R.A. Fraquhar, & K. Willacy: A&AS 121, 139, (1997)
T.I. Hasegawa, E. Herbst, & C.M. Leung: ApJS 82, 167, (1992)
D.S. Wiebe, D.A. Semenov, & Th. Henning: A&A 399, 197, (2003)
S. Fromang, C. Terquem, & S.A. Balbus: MNRAS 329, 18, (2002)
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1997 Springer-Verlag Berlin Heidelberg
About this paper
Cite this paper
Henning, T., Semenov, D., Wiebe, D. (1997). The Ionization State of Protoplanetary Disks: The Chemical View. In: Pfalzner, S., Kramer, C., Straubmeier, C., Heithausen, A. (eds) The Dense Interstellar Medium in Galaxies. Springer Proceedings in Physics, vol 91. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-18902-9_98
Download citation
DOI: https://doi.org/10.1007/978-3-642-18902-9_98
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-62348-6
Online ISBN: 978-3-642-18902-9
eBook Packages: Springer Book Archive