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A jet-cloud interaction in 3C34 at redshift z = 0.69 | | P. N. Best
; M. S. Longair
; H. J. A. Röttgering
; | | Date: |
10 Mar 1997 | | Subject: | astro-ph | | Affiliation: | Sterrewacht Leiden), M. S. Longair (Cambridge) and H. J. A. Röttgering (Sterrewacht Leiden | | Abstract: | We report the detection of a strong jet-cloud interaction at a distance of 120 kpc from the nucleus of the radio galaxy 3C34, which has redshift z=0.69. Hubble Space Telescope images of the radio galaxy show a long narrow region of blue emission orientated along the radio axis and directed towards a radio hotspot. The William Herschel Telescope has been used to provide long-slit spectroscopic data of this object, and infrared observations made with the United Kingdom InfraRed Telescope have enabled its spectral energy distribution to be modelled. We propose that the aligned emission is associated with a region of massive star-formation, induced by the passage of the radio jet through a galaxy within the cluster surrounding 3C34. A star-formation rate of about 100 solar masses per year is required, similar to the values necessary to produce the alignment effect in high-redshift radio galaxies. The consequences of this result for models of star formation in distant radio galaxies are discussed. | | Source: | arXiv, astro-ph/9703064 | | Services: | Forum | Review | PDF | Favorites | |
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