Mapping the diffuse UV sky with GALEX Virtual Observatory Resource

Authors
  1. Murthy J.
  2. Henry R.C.
  3. Sujatha N.V.
  4. Published by
    CDS
Abstract

We present a map of the diffuse ultraviolet cosmic background in two wavelength bands (FUV: 1530{AA} and NUV: 2310{AA}) over almost 75% of the sky using archival data from the Galaxy Evolution Explorer (GALEX) mission. Most of the diffuse flux is due to dust-scattered starlight and follows a cosecant law with slopes of 545 photons/cm^2^/s/sr/{AA} and 433 photons/cm^2^/s/sr/{AA} in the FUV and NUV bands, respectively. There is a strong correlation with the 100um Infrared Astronomy Satellite (IRAS) flux with an average UV/IR ratio of 300 photons/cm^2^/s/sr/{AA}/(MJy/sr) in the FUV band and that of 220 photons/cm^2^/s/sr/{AA}/(MJy/sr) in the NUV band but with significant variations over the sky. In addition to the large-scale distribution of the diffuse light, we note a number of individual features including bright spots around the hot stars Spica and Achernar.

Keywords
  1. interstellar-medium
  2. surveys
  3. ultraviolet-astronomy
Bibliographic source Bibcode
2010ApJ...724.1389M
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/724/1389
IVOA Identifier IVOID
ivo://CDS.VizieR/J/ApJ/724/1389
Document Object Identifer DOI
doi:10.26093/cds/vizier.17241389

Access

Web browser access HTML
http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/724/1389
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/724/1389
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/724/1389
IVOA Table Access TAP
http://tapvizier.cds.unistra.fr/TAPVizieR/tap
Run SQL-like queries with TAP-enabled clients (e.g., TOPCAT).
IVOA Cone Search SCS
For use with a cone search client (e.g., TOPCAT).
http://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/724/1389/table1?
https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/724/1389/table1?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/724/1389/table1?

History

2012-09-08T11:44:13Z
Resource record created
2012-09-08T11:44:13Z
Created
2012-09-08T11:53:27Z
Updated

Contact

Name
CDS support team
Postal Address
CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France
E-Mail
cds-question@unistra.fr