Dust-scattered Ultraviolet Halos around Bright Stars

dc.contributor.author	Murthy, J
dc.contributor.author	Conn Henry, R
dc.date.accessioned	2011-06-01T10:13:48Z
dc.date.available	2011-06-01T10:13:48Z
dc.date.issued	2011-06-10
dc.identifier.citation	The Astrophysical Journal, Vol. 734, No. 1, 13	en
dc.identifier.uri	http://hdl.handle.net/2248/5489
dc.description	Open Access	en
dc.description.abstract	We have discovered ultraviolet (UV) halos extending as far as 5° around four (of six) bright UV stars using data from the Galaxy Evolution Explorer satellite. These halos are due to scattering of the starlight from nearby thin, foreground dust clouds. We have placed limits of 0.58 ± 0.12 and 0.72 ± 0.06 on the phase function asymmetry factor (g) in the FUV (1521 Å) and NUV (2320 Å) bands, respectively. We suggest that these halos are a common feature around bright stars and may be used to explore the scattering function of interstellar grains at small angles.	en
dc.language.iso	en	en
dc.publisher	IOP Publishing	en
dc.relation.uri	http://iopscience.iop.org/0004-637X/734/1/13/	en
dc.rights	© IOP Publishing	en
dc.subject	Dust, extinction – ISM	en
dc.subject	Clouds – ultraviolet: ISM	en
dc.title	Dust-scattered Ultraviolet Halos around Bright Stars	en
dc.type	Article	en