Hostname: page-component-77c89778f8-rkxrd Total loading time: 0 Render date: 2024-07-19T22:24:00.487Z Has data issue: false hasContentIssue false
  • English
  • Français

Flux Ratio [Ne v] 14.3/24.3 as a Test of Collision Strengths

Published online by Cambridge University Press:  26 May 2016

R.H. Rubin
R.H. Rubin*
Affiliation:
NASA Ames Research Center, Moffett Field, CA 94035-1000, USA

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.

From ISO [Ne v] 14.3/24.3 μm line flux ratios, we find that 10 out of 20 planetary nebulae (PNs) have measured ratios below the low-electron density (Ne) theoretical predicted limit. Such astronomical data serve to provide important tests of atomic data, collision strengths in this case. In principle, well-calibrated measurements of the [Ne v] 14.3/24.3 flux ratio could improve upon the existing atomic data.

Type
Part 2. Origin
Information
Symposium - International Astronomical Union , Volume 217: Recycling Intergalactic and Interslettar Matter , 2004 , pp. 190 - 191
Copyright
Copyright © Astronomical Society of the Pacific 2004 

References

Griffin, D.C., & Badnell, N.R. 2000, J. Phys. B, 33, 4389.Google Scholar
Lennon, D.J., & Burke, V.M. 1994, A&AS, 103, 273.Google Scholar
Rubin, R.H., Dufour, R.J., Geballe, T.R., Colgan, S.W.J., Harrington, J.P., Lord, S.D, Liao, A.L., & Levine, D.A. 2001, in Spectroscopic Challenges of Photoionized Plasmas, ASP Conference series, Vol. 247, Eds. Ferland, G.J. & Savin, D.W., p. 479 (astro-ph/0109398).Google Scholar