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    AzTEC/ASTE 1.1-mm survey of SSA22: Counterpart identification and photometric redshift survey of submillimetre galaxies

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    Wilson_2014_MNRAS_40(4)3462.pdf (1.664Mb)
    Issue Date
    2014-06-01
    Author
    Umehata, H.
    Tamura, Y.
    Kohno, K.
    Hatsukade, B.
    Scott, K. S.
    Kubo, M.
    Yamada, T.
    Ivison, R. J.
    Cybulski, R.
    Aretxaga, I.
    Austermann, J. E.
    Hughes, D. H.
    Ezawa, H.
    Hayashino, T.
    Ikarashi, S.
    Iono, D.
    Kawabe, R.
    Matsuda, Y.
    Matsuo, H.
    Nakanishi, K.
    Oshima, T.
    Perera, Thushara A.
    Takata, T.
    Wilson, Graham Wallace
    Yun, M. S.
    Publisher
    Oxford University Press
    Type
    Article
    Article Version
    Scholarly/refereed, publisher version
    Metadata
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    Abstract
    We present the results from a 1.1-mm imaging survey of the SSA22 field, known for having an overdensity of z = 3.1 Lyman α emitting galaxies (LAEs), taken with the astronomical thermal emission camera (AzTEC) on the Atacama Submillimeter Telescope Experiment (ASTE). We imaged a 950-arcmin^(2) field down to a 1σ sensitivity of 0.7–1.3 mJy beam^(−1) to find 125 submillimetre galaxies (SMGs) with a signal-to-noise ratio ≥3.5. Counterpart identification using radio and near/mid-infrared data was performed and one or more counterpart candidates were found for 59 SMGs. Photometric redshifts based on optical to near-infrared images were evaluated for 45 of these SMGs with Spitzer/IRAC data and the median value is found to be z = 2.4. By combining these estimations with estimates from the literature, we determined that 10 SMGs might lie within the large-scale structure at z = 3.1. The two-point angular cross-correlation function between LAEs and SMGs indicates that the positions of the SMGs are correlated with the z = 3.1 protocluster. These results suggest that the SMGs were formed and evolved selectively in the high dense environment of the high-redshift Universe. This picture is consistent with the predictions of the standard model of hierarchical structure formation.
    Description
    This article has been accepted for publication in Monthly Notices Of The Royal Astronomical Society ©: 2014 H. Umehata et al. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.
    URI
    http://hdl.handle.net/1808/17914
    DOI
    https://doi.org/10.1093/mnras/stu447
    Collections
    • Physics & Astronomy Scholarly Works [1744]
    Citation
    Umehata, H. et al. (2014). "AzTEC/ASTE 1.1-mm survey of SSA22: Counterpart identification and photometric redshift survey of submillimetre galaxies." Monthly Notices Of The Royal Astronomical Society, 40(4):3462-3478. http://www.dx.doi.org/10.1093/mnras/stu447.

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    Contact KU ScholarWorks
    785-864-8983
    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    785-864-8983

    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    Image Credits
     

     

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