Radio Continuum Imaging of High‐Redshift Radio Galaxies | Zendy

C. L. Carilli | Zendy; H. J. A. Rottgering | Zendy; R. van Ojik | Zendy; G. K. Miley | Zendy; W. J. M. van Breugel | Zendy

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Radio Continuum Imaging of High‐Redshift Radio Galaxies

Author(s) -

C. L. Carilli,

H. J. A. Rottgering,

R. van Ojik,

G. K. Miley,

W. J. M. van Breugel

Publication year - 1997

Publication title -

the astrophysical journal supplement series

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.546

H-Index - 277

eISSN - 1538-4365

pISSN - 0067-0049

DOI - 10.1086/312973

Subject(s) - physics , radio galaxy , astrophysics , spectral index , redshift , x shaped radio galaxy , galaxy , astronomy , radio astronomy , spectral line

We present sensitive radio continuum images at high resolution of 37 radiogalaxies at z > 2. The observations were made with the Very Large Array (VLA)at 4.7 GHz and 8.2 GHz, with typical resolutions of 0.45'' and 0.25'',respectively. Images of total and polarized intensity, and spectral index, arepresented. Values for total and polarized intensity, and values of rotationmeasures, are tabulated for the hot spots in each source. The positions of theradio nuclei are tabulated, along with a variety of other source parameters.Analysis of the polarization data reveals large rotation measures (RMs) towardssix sources. We argue that the RMs are due to magnetized, ionized gas local tothe radio sources. The magnitude of the RMs are in excess of 1000 rad/m/m (restframe) for these sources. Drawing an analogy to a class of lower redshift radiogalaxies with extreme RMs, we speculate that these sources may be at thecenters of dense, X-ray emitting cluster atmospheres.Comment: ApJ (Supplement) (paper no. 33814

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