Measurement of Dust Optical Properties in Coalsack Nebula

dc.contributor.author	Sujatha, N. V
dc.contributor.author	Murthy, J
dc.contributor.author	Shalima, P
dc.date.accessioned	2007-10-18T09:20:38Z
dc.date.available	2007-10-18T09:20:38Z
dc.date.issued	2007-08
dc.identifier.citation	The Astrophysical Journal, Vol. 665, No. 1, pp. 363 - 368	en
dc.identifier.uri	http://hdl.handle.net/2248/1900
dc.description.abstract	We have used FUSE and Voyager observations of dust-scattered starlight in the neighborhood of the Coalsack Nebula to derive the optical constants of the dust grains. The albedo is consistent with a value of 0.28 ± 0.04, and the phase function asymmetry factor with a value of 0.61 ± 0.07, throughout the spectral range from 900–1200 Å, in agreement with previous determinations as well as theoretical predictions. We have now observed two regions (Ophiuchus and Coalsack) with intense diffuse background radiation and in both cases have found that the emission is due to light from nearby hot stars scattered by a relatively thin foreground cloud, with negligible contribution from the background molecular cloud.	en
dc.format.extent	305029 bytes
dc.format.mimetype	application/pdf
dc.language.iso	en	en
dc.publisher	University of Chicago Press	en
dc.relation.uri	http://www.journals.uchicago.edu/doi/abs/10.1086/519439	en
dc.relation.uri	http://arxiv.org/abs/0705.1752
dc.subject	Dust	en
dc.subject	extinction—ultraviolet: ISM	en
dc.title	Measurement of Dust Optical Properties in Coalsack Nebula	en
dc.type	Article	en