EVIDENCE FOR INFRARED-FAINT RADIO SOURCES AS z > 1 RADIO-LOUD ACTIVE GALACTIC NUCLEI

Journal Article · Wed Feb 10 00:00:00 EST 2010 · Astrophysical Journal

DOI:https://doi.org/10.1088/0004-637X/710/1/698· OSTI ID:21394480

Huynh, Minh T ^[1]; Norris, Ray P ^[2]; Siana, Brian ^[3]; Middelberg, Enno ^[4]

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1. Infrared Processing and Analysis Center, MS 220-6, California Institute of Technology, Pasadena, CA 91125 (United States)
2. Australia Telescope National Facility, CSIRO, Epping, NSW 1710 (Australia)
3. California Institute of Technology, MS 105-24, Pasadena, CA 91125 (United States)
4. Astronomisches Institut, Ruhr-Universitat Bochum, Universitatsstr. 150, 44801 Bochum (Germany)

Infrared-Faint Radio Sources (IFRSs) are a class of radio objects found in the Australia Telescope Large Area Survey which have no observable mid-infrared counterpart in the Spitzer Wide-area Infrared Extragalactic (SWIRE) survey. The extended Chandra Deep Field South now has even deeper Spitzer imaging (3.6-70 {mu}m) from a number of Legacy surveys. We report the detections of two IFRS sources in IRAC images. The non-detection of two other IFRSs allows us to constrain the source type. Detailed modeling of the spectral energy distribution of these objects shows that they are consistent with high-redshift (z {approx}> 1) active galactic nuclei.

• OSTI ID: 21394480
• Journal Information: Astrophysical Journal, Vol. 710, Issue 1; Other Information: DOI: 10.1088/0004-637X/710/1/698; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
ENERGY SPECTRA
GALACTIC EVOLUTION
GALAXIES
GALAXY NUCLEI
RED SHIFT
SIMULATION
TELESCOPES
EVOLUTION
SPECTRA