Rocket observations of the Orion reflection nebulosity in the range 130-200 nanometers and scattering properties of dust grains in the far-ultraviolet

Details Rocket observations of the Orion reflection nebulosity in the range 130-200 nanometers and scattering properties of dust grains in the far-ultraviolet Rocket observations of the Orion reflection nebulosity in the range 130-200 nanometers and scattering properties of dust grains in the far-ultraviolet

Dec 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...287..359o&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 287, Dec. 1, 1984, p. 359-370.

Astronomy and Astrophysics

Astronomy

6

Interstellar Matter, Orion Nebula, Reflection Nebulae, Ultraviolet Astronomy, Astronomical Maps, Backscattering, Far Ultraviolet Radiation, Forward Scattering, Ridges, Spatial Distribution

Scientific paper

Vacuum ultraviolet surface brightness maps of the southern part of the Orion region at the wavelengths 195.1, 179.6, 164.0, 148.4, and 132.8 nm were obtained by a rocket experiment. Large-scale bright nebulosity and a ridge structure in the western circumference of the Orion regions are clearly seen in these contour maps. Simple analysis shows that the observations can be explained by a front-dust-layer model, in which the diffuse light arises from the starlight scattered by dust grains in front of the stars, as well as by a back-dust-layer model, where dust grains behind the stars scatter the starlight to produce the diffuse nebulosity. A detailed discussion of the far-ultraviolet scattering properties of the dust grains in the observed region is included.

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