FUV Scattering by Dust in Orion

Details FUV Scattering by Dust in Orion FUV Scattering by Dust in Orion

2006-01-18

arxiv.org/abs/astro-ph/0601388v1

Mon.Not.Roy.Astron.Soc. 367 (2006) 1686-1688

Astronomy and Astrophysics

Astrophysics

4 pages, 4 figures

Scientific paper

10.1111/j.1365-2966.2006.10071.x

We have modelled diffuse far-ultraviolet spectrum observed by FUSE near M42 as scattering of starlight from the Trapezium stars by dust in front of the nebula. The dust grains are known to be anomalous in Orion with Rv = 5.5 and these are the first measurements of the FUV optical properties of the grains outside of ``normal'' Milky Way dust. We find an albedo varying from 0.3 $\pm$ 0.1 at 912 \AA to 0.5 $\pm$ 0.2 at 1020 \AA which is consistent with theoretical predictions.

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