Redshift distribution of the submillimeter extragalactic background light

  • Wei-Hao Wang
  • Lennox L. Cowie
  • Amy J. Barger
Conference paper


The submillimeter (submm) extragalactic background light (EBL) traces the integrated star formation history throughout the cosmic time. Deep blank-field 850 μm and 1.4 GHz surveys and optical follow-up have been only able to determine the redshift of ∼20% of the submm EBL. The majority (80%) of the submm EBL is still below the confusion and sensitivity limits of current submm and radio instruments. We break through these limits with stacking analyses on our deep 850 μm image in the GOODS-N and find that the submm EBL mostly comes from galaxies at redshifts around 1.0. This redshift is much lower than the redshift of z=2–3 previously implied from radio identified submm sources. This result significantly decreases the number of high redshift galaxies that may be seen by ALMA.


Submillimeter Extragalactic background Galaxy ALMA 


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Copyright information

© Springer Science+Business Media B.V. 2008

Authors and Affiliations

  • Wei-Hao Wang
    • 1
  • Lennox L. Cowie
    • 2
  • Amy J. Barger
    • 3
  1. 1.NRAOSocorroUSA
  2. 2.Institute for AstronomyUniversity of HawaiiHonoluluUSA
  3. 3.Department of AstronomyUniversity of Wisconsin-MadisonMadisonUSA

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