Curtin University Homepage
  • Library
  • Help
    • Admin

    espace - Curtin’s institutional repository

    JavaScript is disabled for your browser. Some features of this site may not work without it.
    View Item 
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item

    Deep Spitzer observations of infrared-faint radio sources: High-redshift radio-loud active galactic nuclei?

    Access Status
    Open access via publisher
    Authors
    Norris, R.
    Afonso, J.
    Cava, A.
    Farrah, D.
    Huynh, M.
    Ivison, R.
    Jarvis, M.
    Lacy, M.
    Mao, M.
    Maraston, C.
    Mauduit, J.
    Middelberg, E.
    Oliver, S.
    Seymour, Nick
    Surace, J.
    Date
    2011
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Norris, R. and Afonso, J. and Cava, A. and Farrah, D. and Huynh, M. and Ivison, R. and Jarvis, M. et al. 2011. Deep Spitzer observations of infrared-faint radio sources: High-redshift radio-loud active galactic nuclei? Astrophysical Journal. 736 (1).
    Source Title
    Astrophysical Journal
    DOI
    10.1088/0004-637X/736/1/55
    ISSN
    0004-637X
    School
    Department of Physics and Astronomy
    URI
    http://hdl.handle.net/20.500.11937/9787
    Collection
    • Curtin Research Publications
    Abstract

    Infrared-faint radio sources (IFRSs) are a rare class of objects which are relatively bright at radio wavelengths but very faint at infrared and optical wavelengths. Here we present sensitive near-infrared observations of a sample of these sources taken as part of the Spitzer Extragalactic Representative Volume Survey. Nearly all the IFRSs are undetected at a level of ~1 µJy in these new deep observations, and even the detections are consistent with confusion with unrelated galaxies. A stacked image implies that the median flux density is S3.6 µm ~ 0.2 µJy or less, giving extreme values of the radio-infrared flux density ratio. Comparison of these objects with known classes of object suggests that the majority are probably high-redshift radio-loud galaxies, possibly suffering from significant dust extinction. © 2011. The American Astronomical Society. All rights reserved.

    Related items

    Showing items related by title, author, creator and subject.

    • Radio Galaxy Zoo: Host galaxies and radio morphologies derived from visual inspection
      Banfield, J.; Wong, O.; Willett, K.; Norris, R.; Rudnick, L.; Shabala, S.; Simmons, B.; Snyder, C.; Garon, A.; Seymour, Nick; Middelberg, E.; Andernach, H.; Lintott, C.; Jacob, K.; Kapinska, A.; Mao, M.; Masters, K.; Jarvis, M.; Schawinski, K.; Paget, E.; Simpson, R.; Klöckner, H.; Bamford, S.; Burchell, T.; Chow, K.; Cotter, G.; Fortson, L.; Heywood, I.; Jones, T.; Kaviraj, S.; López-Sánchez, R.; Maksym, W.; Polsterer, K.; Borden, K.; Hollow, R.; Whyte, L. (2015)
      We present results from the first 12 months of operation of Radio Galaxy Zoo, which upon completion will enable visual inspection of over 170 000 radio sources to determine the host galaxy of the radio emission and the ...
    • The radio spectral energy distribution of infrared-faint radio sources
      Herzog, A.; Norris, R.; Middelberg, E.; Seymour, Nick; Spitler, L.; Emonts, B.; Franzen, T.; Hunstead, R.; Intema, H.; Marvil, J.; Parker, Q.; Sirothia, S.; Hurley-Walker, Natasha; Bell, M.; Bernardi, G.; Bowman, J.; Briggs, F.; Cappallo, R.; Callingham, J.; Deshpande, A.; Dwarakanath, K.; For, B.; Greenhill, L.; Hancock, Paul; Hazelton, B.; Hindson, L.; Johnston-Hollitt, M.; Kapińska, A.; Kaplan, D.; Lenc, E.; Lonsdale, C.; McKinley, B.; McWhirter, S.; Mitchell, D.; Morales, M.; Morgan, E.; Morgan, J.; Oberoi, D.; Offringa, A.; Ord, S.; Prabu, T.; Procopio, P.; Udaya Shankar, N.; Srivani, K.; Staveley-Smith, L.; Subrahmanyan, R.; Tingay, Steven; Wayth, Randall; Webster, R.; Williams, A.; Williams, C.; Wu, C.; Zheng, Q.; Bannister, K.; Chippendale, A.; Harvey-Smith, L.; Heywood, I.; Indermuehle, B.; Popping, A.; Sault, R.; Whiting, M. (2016)
      Context: Infrared-faint radio sources (IFRS) are a class of radio-loud (RL) active galactic nuclei (AGN) at high redshifts (z 1:7) that are characterised by their relative infrared faintness, resulting in enormous ...
    • A redshift survey of herschel far-infrared selected starbursts and implications for obscured star formation
      Casey, C.; Berta, S.; Béthermin, M.; Bock, J.; Bridge, C.; Budynkiewicz, J.; Burgarella, D.; Chapin, E.; Chapman, S.; Clements, D.; Conley, A.; Conselice, C.; Cooray, A.; Farrah, D.; Hatziminaoglou, E.; Ivison, R.; Le Floc'h, E.; Lutz, D.; Magdis, G.; Magnelli, B.; Oliver, S.; Page, M.; Pozzi, F.; Rigopoulou, D.; Riguccini, L.; Roseboom, I.; Sanders, D.; Scott, D.; Seymour, Nick; Valtchanov, I.; Vieira, J.; Viero, M.; Wardlow, J. (2012)
      We present Keck spectroscopic observations and redshifts for a sample of 767 Herschel-SPIRE selected galaxies (HSGs) at 250, 350, and 500 μm, taken with the Keck I Low Resolution Imaging Spectrometer and the Keck II DEep ...
    Advanced search

    Browse

    Communities & CollectionsIssue DateAuthorTitleSubjectDocument TypeThis CollectionIssue DateAuthorTitleSubjectDocument Type

    My Account

    Admin

    Statistics

    Most Popular ItemsStatistics by CountryMost Popular Authors

    Follow Curtin

    • 
    • 
    • 
    • 
    • 

    CRICOS Provider Code: 00301JABN: 99 143 842 569TEQSA: PRV12158

    Copyright | Disclaimer | Privacy statement | Accessibility

    Curtin would like to pay respect to the Aboriginal and Torres Strait Islander members of our community by acknowledging the traditional owners of the land on which the Perth campus is located, the Whadjuk people of the Nyungar Nation; and on our Kalgoorlie campus, the Wongutha people of the North-Eastern Goldfields.