A jet-cloud interaction in 3C 34 at redshift z = 0.69 | Zendy

P. N. Best | Zendy; M. S. Longair | Zendy; H. J. A. Röttgering | Zendy

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A jet-cloud interaction in 3C 34 at redshift z = 0.69

Author(s) -

P. N. Best,

M. S. Longair,

H. J. A. Röttgering

Publication year - 1997

Publication title -

monthly notices of the royal astronomical society

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.058

H-Index - 383

eISSN - 1365-8711

pISSN - 0035-8711

DOI - 10.1093/mnras/286.4.785

Subject(s) - physics , astrophysics , redshift , radio galaxy , astronomy , galaxy , star formation , spectral energy distribution , x shaped radio galaxy , radio telescope , luminous infrared galaxy

We report the detection of a strong jet-cloud interaction at a distance of120 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 ofblue emission orientated along the radio axis and directed towards a radiohotspot. The William Herschel Telescope has been used to provide long-slitspectroscopic data of this object, and infrared observations made with theUnited Kingdom InfraRed Telescope have enabled its spectral energy distributionto be modelled. We propose that the aligned emission is associated with aregion of massive star-formation, induced by the passage of the radio jetthrough a galaxy within the cluster surrounding 3C34. A star-formation rate ofabout 100 solar masses per year is required, similar to the values necessary toproduce the alignment effect in high-redshift radio galaxies. The consequencesof this result for models of star formation in distant radio galaxies arediscussed.Comment: 12 pages including 11 figures, LaTeX. To appear in MNRA

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