X-ray analysis of the cluster 3C 129 |
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| Authors: | D A Leahy D Yin |
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| Institution: | Department of of Physics and Astronomy, University of Calgary, Calgary, Alberta, T2N 1N4, Canada |
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| Abstract: | The cluster 3C 129 is classified as a rich cluster. An analysis of the properties of the cluster 3C 129 from ROSAT PSPC and HRI, Einstein IPC, and EXOSAT ME observations is presented. The mean temperature from a joint fit of the ROSAT PSPC and EXOSAT ME data is 5.5(±0.2) keV. The luminosity is 0.6×1044 erg s?1 in 0.2–2.4 keV and 2.7×1044 erg s?1 in 0.2–10 keV. We find a cooling flow with a rate of ～84 M⊙ yr?1. The central gas density is 6×10?3 cm?3, and the ICM mass is 3.6×1013 M⊙. The total cluster mass is ～5×1014 M⊙. The X-ray morphology shows an east–west elongation, which is evidence for a recent merger event. The radio source 3C 129.1 is located near the X-ray centre. Another cluster member galaxy (the radio galaxy 3C 129) is a prototype of head-tailed radio galaxies, and is located in the west part of the cluster. The tail points along the gradient of intracluster gas pressure. There are no significant point X-ray sources associated with the AGNs of the two radio galaxies. |
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| Keywords: | galaxies: clusters: individual: 3C 129 cooling flows X-rays: galaxies |
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