Low frequency observations of emission nebulae and their electron temperatures |
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| Authors: | Yervant Terzian |
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| Institution: | (1) Center for Radiophysics and Space Research, Cornell University, Ithaca, N.Y., USA |
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| Abstract: | Radio observations of emission nebulae at 74 MHz are reported. Flux densities for NGC 1499, IC 405, IC 410, NGC 2024, NGC 2175, NGC 2237-46, and NGC 6820 are given. Most of the observed nebulae are found to be optically thick at 74 MHz. Combining the low frequency results with previously measured flux densities at high frequencies, it is shown that it is possible to derive the mean electron temperatures of the observed nebulae. The results show that the range in temperature is from 3200 to 6800 K. |
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