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arXiv · 1311.1485

The GISMO 2-millimeter Deep Field in GOODS-N

Johannes G. Staguhn·Attila Kovacs·Richard G. Arendt·Dominic J. Benford·Roberto Decarli·Eli Dwek·Dale J. Fixsen·Gene C. Hilton·Kent D. Irwin·Christine A. Jhabvala·Alexander Karim·Samuel Leclercq·Stephen F. Maher·Timothy M. Miller·S. Harvey Moseley·Elmer H. Sharp·Fabian Walter·Edward J. Wollack
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Abstract

We present deep continuum observations using the GISMO camera at a wavelength of 2 mm centered on the Hubble Deep Field (HDF) in the GOODS-N field. These are the first deep field observations ever obtained at this wavelength. The 1 sigma sensitivity in the innermost approx. 4 arcminutes of the 7 utes map is approx. 135 uJy/beam, a factor of three higher in flux/beam sensitivity than the deepest available SCUBA 850 um 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 um. 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 med(z) = 2.91 +/- 0.94. Statistically, the detections are most likely real for 5 of the seven 2 mm sources without shorter wavelength counterparts, while the probability for none of them being real is negligible.

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Johannes G. Staguhn, Attila Kovacs, Richard G. Arendt, Dominic J. Benford, Roberto Decarli, Eli Dwek, Dale J. Fixsen, Gene C. Hilton, Kent D. Irwin, Christine A. Jhabvala, Alexander Karim, Samuel Leclercq, Stephen F. Maher, Timothy M. Miller, S. Harvey Moseley, Elmer H. Sharp, Fabian Walter, Edward J. Wollack. 2013-11-06. The GISMO 2-millimeter Deep Field in GOODS-N. https://doi.org/10.1088/0004-637x%2F790%2F1%2F77

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