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Astrophysics and Space Science

, Volume 320, Issue 1–3, pp 11–19 | Cite as

The Ultraviolet sky surveys: filling the gap in our view of the Universe

  • Luciana Bianchi
Original Article

Abstract

The GALEX mission is performing imaging and spectroscopic surveys of the sky at Ultraviolet wavelengths, and providing unprecedented sky maps in two UV bands, far-UV and near-UV, and catalogs of UV sources. I will describe the major surveys accomplished so far, and results in investigating the nature of the UV sources. The UV surveys, linked to a multi-wavelength archive, offer great sensitivity to detect and characterize several classes of astrophysical objects, such as low-redshift QSOs, star-forming galaxies, and white dwarfs (WD) in the Milky Way. Efforts towards obtaining a significant census of WDs from GALEX imaging data are described in particular. A dedicated, deep survey of nearby galaxies provides a snapshot of their recent star formation, shedding new light on the process of star formation and its modalities in different environments and conditions. Deep GALEX data revealed young stellar populations in extreme outskirts of spiral galaxies, previously thought to be stable against star formation given their low density. UV measurements for millions of nearby and distant galaxies map the history and probe the causes of star formation in the Universe over the redshift range z=0–2.

Keywords

Astronomical data bases: surveys Astronomical data bases: catalogs Stars: white dwarfs Stars: early type Galaxy: stellar content Galaxies: evolution Quasars: general Ultraviolet: general 

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References

  1. Bianchi, L., et al.: Astrophys. J. Suppl. Ser. 173, 659 (2007) CrossRefADSGoogle Scholar
  2. Bianchi, L., The UV Universe: Stars from Birth to Death. Gomez de Castro, A.I., Barstow, M. (eds.) (2006, in press) Google Scholar
  3. Bianchi, L., et al.: Astrophys. J. Lett. 619, L27 (2005a) CrossRefADSGoogle Scholar
  4. Bianchi, L., et al.: Astrophys. J. Lett. 619, L71 (2005b) CrossRefADSGoogle Scholar
  5. Bianchi, L., et al.: Astron. Astrophys. 207, 133.13 (2005c) Google Scholar
  6. Bianchi, L. et al.: The Local Group as Astrophys. Laboratory. Livio, M., Brown, T. (eds.) STScI, p. 10 (2003) Google Scholar
  7. Gil de Paz, A., et al.: Astrophys. J. Suppl. Ser. 173, 185 (2007) CrossRefADSGoogle Scholar
  8. Hibbard, J., et al.: Astrophys. J. Lett. 619, L87 (2005) CrossRefADSGoogle Scholar
  9. Martin, C., et al.: Astrophys. J. Suppl. Ser. 173, 415 (2007) CrossRefADSGoogle Scholar
  10. Martin, C., et al.: Astrophys. J. Lett. 619, L1 (2005) CrossRefADSGoogle Scholar
  11. Massey, P., et al.: Astron. J. 131, 2478 (2006) CrossRefADSGoogle Scholar
  12. Massey, P., et al.: Astron. J. 133, 2393 (2007) CrossRefADSGoogle Scholar
  13. Morrissey, P., et al.: Astrophys. J. Suppl. Ser. 173, 682 (2007) CrossRefADSGoogle Scholar
  14. Neff, S., et al.: Astrophys. J. Lett. 619, L91 (2005) CrossRefADSGoogle Scholar
  15. Salim, S., et al.: Astrophys. J. Suppl. Ser. 173, 267 (2007) CrossRefADSGoogle Scholar
  16. Thilker, D., et al.: Astrophys. J. Suppl. Ser. 173, 538 (2007) CrossRefADSGoogle Scholar
  17. Thilker, D., et al.: Astrophys. J. Lett. 619, L79 (2005) CrossRefADSGoogle Scholar
  18. Xu, K., et al.: Astrophys. J. Lett. 619, L95 (2005) CrossRefADSGoogle Scholar
  19. York, D., et al.: Astron. J. 120, 1579 (2000) CrossRefADSGoogle Scholar

Copyright information

© Springer Science+Business Media B.V. 2008

Authors and Affiliations

  1. 1.Department of Physics and AstronomyThe Johns Hopkins UniversityBaltimoreUSA

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