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On the Strength of the CIV 155 nm Resonance Lines in Planetary Nebulae

Published online by Cambridge University Press:  18 September 2017

J. Köppen  and
R. Wehrse
J. Köppen
Affiliation:
Institut für Theoretische Astrophysik, Heidelberg, FRG
R. Wehrse
Affiliation:
Institut für Theoretische Astrophysik, Heidelberg, FRG

Extract

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Ionization models for NGC 6210, 7009, 3242 and II 2003 have been constructed from optical and IUE spectroscopic data. The CIV 155 nm resonance line is predicted about ten times stronger than observed. Radiative transfer calculations of the CIV lines in a spherical nebula, assuming partial frequency redistribution, were made to investigate the effects of dust absorption and an additional depopulation of the upper level.

Type
Abstracts of Contributed Papers
Information
Symposium - International Astronomical Union , Volume 103: Planetary Nebulae , 1983 , pp. 518
Copyright
Copyright © Reidel 1983