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Comparison of Gas and Radiation Pressure in the Problems of the Dynamics of Planetary Nebulae

Published online by Cambridge University Press:  03 August 2017

H. Zanstra
H. Zanstra*
Affiliation:
Sterrekundig Instituut, Roetersstraat, Amsterdam, the Netherlands

Extract

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We may summarize Wilson's extended study of internal motions in planetary nebulae by stating that he finds the average expansion velocity in the regions whence originate the lines of H, NeIII, OIII to be roughly 20 km/sec, with rare examples ranging as low as O and as high as 50 km/sec. We ask whether radiation pressure and/or gas pressure may give, in an elementary calculation, velocities anywhere near these values.

Type
Part V: Kinematic Structure of Gaseous Envelopes
Information
Symposium - International Astronomical Union , Volume 8: Cosmical Gas Dynamics , July 1958 , pp. 1030 - 1033
Copyright
Copyright © American Physical Society 1958 

References

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