Neutral oxygen and nitrogen lines in planetary nebulae

Details Neutral oxygen and nitrogen lines in planetary nebulae Neutral oxygen and nitrogen lines in planetary nebulae

Jul 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980apj...239..592k&link_type=abstract

Astrophysical Journal, Part 1, vol. 239, July 15, 1980, p. 592-597.

Astronomy and Astrophysics

Astrophysics

11

Line Spectra, Neutral Gases, Nitrogen, Oxygen Spectra, Planetary Nebulae, Helium, Ionized Gases, Optical Thickness

Scientific paper

The present analysis, based on recent data, confirms the relationship found by Khromov (1965) and Campbell (1968) between neutral and singly ionized species. The results of an analysis of the forbidden O I and N I lines in the spectra of planetary nebulae show that the strength of the forbidden O I line at 6300 A in optically thin planetaries is directly proportional to that of the forbidden O II line at 3727 A over a range of more than two orders of magnitude.

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