Flux ratio [Ne V] 14.3/24.3 as a test of collision strengths

R. H. Rubin

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Flux ratio [Ne V] 14.3/24.3 as a test of collision strengths

R. H. Rubin

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Abstract

From ISO [Ne V] 14.3/24.3 micron line flux ratios, we find that 10 out of 20 planetary nebulae (PNs) have measured ratios below the low-electron density (N_e) 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.

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R. H. Rubin. 2004-02-18. Flux ratio [Ne V] 14.3/24.3 as a test of collision strengths. https://arxiv.org/abs/astro-ph/0402447

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