IIA Institutional Repository

GALEX observations of diffuse UV radiation at high spatial resolution from the Sandage Nebulosity

Show simple item record

dc.contributor.author Sujatha, N. V
dc.contributor.author Murthy, J
dc.contributor.author Karnataki, A
dc.contributor.author Henry, R. C
dc.contributor.author Bianchi, L
dc.date.accessioned 2009-03-24T13:27:28Z
dc.date.available 2009-03-24T13:27:28Z
dc.date.issued 2009-02
dc.identifier.citation The Astrophysical Journal, Vol. 692, No. 2, pp. 1333 - 1338 en
dc.identifier.issn 0004-637X
dc.identifier.uri http://hdl.handle.net/2248/4410
dc.description.abstract We have observed a region of nebulosity first identified as starlight scattered by interstellar dust by Sandage using the Galaxy Evolution Explorer (GALEX) ultraviolet imaging telescope. Apart from airglow and zodiacal emission, we have found a diffuse UV background of between 500 and 800 photons cm/Sup–2 sr/Sup–1 s/Sup–1 Å/Sup–1 in both the GALEX far-ultraviolet (FUV) (1350-1750 Å) and NUV (1750-2850 Å) bands. Of this emission, up to 250 photons cm/Sup–2 sr/Sup–1 s/Sup–1 Å/Sup–1 is due to H/Sub2 fluorescent emission in the FUV band. The remainder is consistent with scattering from interstellar dust with forward scattering grains of albedo about 0.4. These are the highest spatial resolution observations of the diffuse UV background to date and show an intrinsic scatter beyond that expected from instrumental noise alone. Further modeling is required to understand the nature of this scatter and its implications for the ISM. en
dc.language.iso en en
dc.publisher The American Astronomical Society en
dc.relation.uri http://www.iop.org/EJ/abstract/0004-637X/692/2/1333/ en
dc.relation.uri http://arxiv.org/abs/0807.0189 en
dc.rights © The American Astronomical Society
dc.subject Dust en
dc.subject Extinction en
dc.subject Scattering en
dc.subject Ultraviolet: ISM en
dc.title GALEX observations of diffuse UV radiation at high spatial resolution from the Sandage Nebulosity en
dc.type Article en

Files in this item

This item appears in the following Collection(s)

Show simple item record

Search DSpace


My Account