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Date and Time of the Query: 2019-06-18 T09:51:21 PDT
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For refcode 1990AJ.....99...14B:
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Copyright by American Astronomical Society. Reproduced by permission
1990AJ.....99...14B THE RADIO PROPERTIES OF cD GALAXIES IN ABELL CLUSTERS. I. AN X-RAY-SELECTED SAMPLE JACK 0. BURNS Institute for Astrophysics, Department of Physics and Astronomy, The University of New Mexico, Albuquerque, New Mexico 87131 Received 15 May 1989; revised 10 July 1989 ABSTRACT The radio and x-ray properties of a sample of 27 cD galaxies in rich clusters are presented in this paper. The radio data consist of 6 cm VLA maps at a resolution of 1-2 arcsec. The x-ray data consist of images and surface-brightness profiles from the Einstein IPC, and derived quantities such as cooling times, mass-accretion rates, and thermal pressures from Arnaud (1988). These data are used to explore the relationship between x- ray cooling cores, and the power and morphology of the radio emission. We find that 71% of the cD's with x-ray cooling cores are radio loud, whereas a smaller but still significant 23% of cD's without cooling cores are detected at 6 cm above 0.2 mJy. Among the radio galaxies in noncooling core clusters are luminous and extended wide-angle tails. There is a weak correlation between the mass-accretion rate and the radio power for cD's. There is also an interesting class of cooling core cluster (e.g., A2052) with small diameter, amorphous radio emission that may be the result of diffusion along radial magnetic fields set up in cooling inflows. Finally, we examine the relationships between optical emission-line luminosity with radio power and mass-accretion rate.
Retrieve 49 NED objects in this reference.
Please click here for ADS abstract

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