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Title: Dust Properties in the Far-Ultraviolet in Ophiuchus
Authors: Sujatha, N. V
Shalima, P
Murthy, J
Henry, R. C
Keywords: ISM: Dust;Extinction;Infrared: ISM;Ultraviolet: ISM
Issue Date: Nov-2005
Publisher: The American Astronomical Society
Citation: Astrophysical Journal, Vol. 633, No. 1, Part 1, pp. 257 - 261
Abstract: We have derived the albedo (a) and phase function asymmetry factor (g) of interstellar dust grains at 1100 Å using archival Voyager observations of diffuse radiation in Ophiuchus. We have found that the grains are highly forward-scattering, with g=0.55+/-0.25 and a=0.40+/-0.10. Even though most of the gas in this direction is in the Ophiuchus molecular cloud, the diffuse FUV radiation is almost entirely due to scattering in a relatively thin foreground cloud. This suggests that one cannot assume that the UV background is directly correlated with the total amount of gas in any direction.
ISSN: 0004-637X
Appears in Collections:IIAP Publications

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