NASA NTRS · 19840032330
O IV temperature determination for NGC 7662
Abstract
A novel method is presented for the determination of electron temperatures in the high excitation zones of planetary nebulae and active galactic nuclei, using the ratio of the O IV line at 25.87 microns to those near 1400 A to calculate a temperature within the He III zone of the galaxy NGC 7662. The observed fluxes yield a lower bound to the temperature of 14,730 K, which is noted to be significantly higher than the O III temperature of about 12,000 K.
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Shure, M. A., Herter, T., Houck, J. R.. 1983-11-15. O IV temperature determination for NGC 7662. https://ntrs.nasa.gov/citations/19840032330
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