Journal
ASTROPHYSICS AND SPACE SCIENCE
Volume 313, Issue 1-3, Pages 317-320Publisher
SPRINGER
DOI: 10.1007/s10509-007-9615-4
Keywords
submillimeter; extragalactic background; galaxy; ALMA
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The submillimeter (submm) extragalactic background light (EBL) traces the integrated star formation history throughout the cosmic time. Deep blank-field 850 mu m and 1.4 GHz surveys and optical follow-up have been only able to determine the redshift of similar to 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 mu m 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.
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