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Title: The GISMO two-millimeter deep field in GOODS-N

We present deep continuum observations using the GISMO camera at a wavelength of 2 mm centered on the Hubble Deep Field in the GOODS-N field. These are the first deep field observations ever obtained at this wavelength. The 1σ sensitivity in the innermost ∼4' of the 7' diameter map is ∼135 μJy beam{sup –1}, a factor of three higher in flux/beam sensitivity than the deepest available SCUBA 850 μm observations, and almost a factor of four higher in flux/beam sensitivity than the combined MAMBO/AzTEC 1.2 mm observations of this region. Our source extraction algorithm identifies 12 sources directly, and another 3 through correlation with known sources at 1.2 mm and 850 μm. Five of the directly detected GISMO sources have counterparts in the MAMBO/AzTEC catalog, and four of those also have SCUBA counterparts. HDF850.1, one of the first blank-field detected submillimeter galaxies, is now detected at 2 mm. The median redshift of all sources with counterparts of known redshifts is z-tilde =2.91±0.94. Statistically, the detections are most likely real for five of the seven 2 mm sources without shorter wavelength counterparts, while the probability for none of them being real is negligible.
Authors:
 [1] ;  [2] ; ; ; ; ; ; ; ; ; ;  [3] ; ;  [4] ; ;  [5] ;  [6] ;  [7]
  1. The Henry A. Rowland Department of Physics and Astronomy, Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218 (United States)
  2. California Institute of Technology 301-17, 1200 East California Boulevard, Pasadena, CA 91125 (United States)
  3. Observational Cosmology Lab, Code 665, NASA Goddard Space Flight Center, Greenbelt, MD 20771 (United States)
  4. Max-Planck-Institute für Astronomie, Königstuhl 17, D-69117 Heidelberg (Germany)
  5. NIST Quantum Devices Group, 325 Broadway Mailcode 817.03, Boulder, CO 80305 (United States)
  6. Department of Physics, Durham University, South Road, Durham DH1 3LE (United Kingdom)
  7. Institut de Radio Astronomie Millimétrique, 300 Rue de la Piscine, F-38406 Saint Martin d'Heres (France)
Publication Date:
OSTI Identifier:
22365557
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal; Journal Volume: 790; Journal Issue: 1; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ALGORITHMS; BEAMS; CATALOGS; CORRELATIONS; DETECTION; EVOLUTION; EXTRACTION; GALAXIES; LUMINOSITY; MAPS; MASS; PHOTOMETRY; PROBABILITY; RED SHIFT; SENSITIVITY; WAVELENGTHS