M 43 - an emission nebula in Orion

Details M 43 - an emission nebula in Orion M 43 - an emission nebula in Orion

Apr 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978a%26a....65..207t&link_type=abstract

Astronomy and Astrophysics, vol. 65, no. 2, Apr. 1978, p. 207-213.

Astronomy and Astrophysics

Astrophysics

14

Hydrogen Clouds, Infrared Radiation, Interstellar Extinction, Nebulae, Radiative Recombination, Abundance, Interstellar Matter, Line Spectra, Stellar Atmospheres, Stellar Luminosity, Stellar Models

Scientific paper

New radio continuum, radio recombination line and infrared data on M 43 are presented. The infrared luminosity of the nebula and the luminosity of the single ionizing star, NU Ori, are found to be nearly equal. The dust in front of NU Ori appears to have a lower ultraviolet extinction cross section than dust in the general interstellar medium, and may be concentrated in a neutral layer close to the ionized region. The abundance of ionized helium is compatible with line blanketed stellar atmosphere models.

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