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Date and Time of the Query: 2019-06-26 T04:26:39 PDT
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For refcode 2000AJ....120.2300D:
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2000AJ....120.2300D HUBBLE SPACE TELESCOPE NICMOS OBSERVATIONS OF THE HOST GALAXIES OF POWERFUL RADIO SOURCES: DOES SIZE MATTER? W. H. DE VRIES Institute of Geophysics and Planetary Physics, Lawrence Livermore National Laboratory, Livermore, CA 94550; devries1@llnl.gov C. P. O'DEA Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218 P. D. BARTHEL Kapteyn Astronomical Institute, P.O. Box 800, NL-9700 AV, Groningen, The Netherlands C. FANTI AND R. FANTI University of Bologna, Via Irnerio 46, I-40126, Bologna, Italy AND M. D. LEHNERT MPE, Postfach 1603, D-85740, Garching, Germany Received 2000 June 19; accepted 2000 July 26 ABSTRACT We present near-infrared J- and K-band imaging of a sample of powerful radio source host galaxies with the Hubble Space Telescope NICMOS2 camera. These sources have been selected on their double-lobed radio structure and include a wide range of projected radio source sizes. The largest projected linear sizes range from the compact gigahertz peaked spectrum (GPS; <1 kpc) and compact steep spectrum (CSS; <20 kpc) radio sources, up to the large- scale (>20 kpc) classical doubles (FR II radio sources). We investigate the dependence of host galaxy properties (including near-IR surface brightness profiles) on radio source size, using both our own and published data. The absolute magnitudes and surface brightness profiles are consistent with the host galaxies being regular giant elliptical galaxies rather than brightest cluster galaxies (BCGs). We find that the GPS, CSS, and FR II host galaxies are a uniform class of objects, consistent with a scenario in which a powerful radio source evolves along this size sequence. Key words: galaxies: nuclei-infrared radiation
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