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Kinematics of ionized gas associated with the radio nucleus and lobes in the active galaxy IRAS 04210+0400 | | A.J. Holloway
; W. Steffen
; A. Pedlar
; D.J. Axon
; J.E. Dyson
; J. Meaburn
; C.N. Tadhunter
; | | Date: |
2 Oct 1995 | | Subject: | astro-ph | | Affiliation: | Manchester), W. Steffen (Manchester), A. Pedlar (NRAL), D.J. Axon (NRAL,STSCI), J.E. Dyson (Manchester), J. Meaburn (Manchester) and C.N. Tadhunter (Sheffield | | Abstract: | We have used high resolution longslit spectroscopy to investigate the ionized gas in the active galaxy IRAS 04210+0400 and its association with the radio structure. We suggest that two of the ionized components are associated with the central double radio source and observe that the relative positions of these components vary for different emission lines. Both results are consistent with the radio components representing the working surfaces of a pair of jets emerging from the centre of the galaxy. In this scenario, the optical emission in the centre arises behind the bowshocks produced by the jets in the interstellar medium. The emission lines are detected and show a dramatic (~ 900 km/s) spread in velocity at the position of the radio lobe hotspots. We suggest a model which explains this phenomenon as the result of a jet head emerging through the boundary between the interstellar and intergalactic medium. A similar scenario has previously been suggested as a model to explain wide angle tail radio sources (WAT’s). Based on this model, we simulate the longslit spectra of these regions and compare the results with the observations. | | Source: | arXiv, astro-ph/9510001 | | Services: | Forum | Review | PDF | Favorites | |
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