Intense Diffuse Emission from the Orion Nebula

Details Intense Diffuse Emission from the Orion Nebula Intense Diffuse Emission from the Orion Nebula

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aas...205.8401h&link_type=abstract

American Astronomical Society Meeting 205, #84.01; Bulletin of the American Astronomical Society, Vol. 36, p.1481

Astronomy and Astrophysics

Astronomy

Scientific paper

We present spectra of the diffuse FUV (900 -- 1200 Å) emission from a region near the Orion Nebula: the first high resolution spectra of the diffuse background radiation. These observations were made using serendipitous FUSE observations and were only possible because of the strength of the diffuse emission (about 3 x 105 photons cm-2 s-1 sr-1 Å-1) and the sensitivity of the FUSE instrument.
Preliminary modeling suggests that the light is scattered starlight from the Trapezium stars, primarily Θ 1 Ori C.
However, a comparison of the spectra with the nearby stars shows significant differences, particularly in the Lyman Beta line where there is much less interstellar absorption in our diffuse spectrum. We believe that we are indeed observing scattered light from the Trapezium stars but through a line of sight with much less matter than the direct line to the Trapezium.
This work was supported by NASA; we thank the entire FUSE team.

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