SIMBAD references

2010MNRAS.403..269C - Mon. Not. R. Astron. Soc., 403, 269-273 (2010/March-3)

HI gas in the rejuvenated radio galaxy 4C29.30.


Abstract (from CDS):

We report the results of our observations of Hi absorption towards the central region of the rejuvenated radio galaxy 4C29.30 (J0840+2949) with the Giant Metrewave Radio Telescope. The radio source has diffuse, extended emission with an angular size of ∼520 arcsec (639 kpc) within which a compact edge-brightened double-lobed source with a size of 29 arcsec (36 kpc) is embedded. The absorption profile which is seen towards the central component of the inner double is well resolved and consists of six components; all but one of which appears to be redshifted relative to the optical systemic velocity. The neutral hydrogen column density is estimated to be N(Hi) = 4.7x1021(Ts/100)(fc/1.0)/cm2, where Tsand fc are the spin temperature and covering factor of the background source, respectively. This detection reinforces a strong correlation between the occurrence of Hi absorption and rejuvenation of radio activity suggested earlier, with the possibility that the redshifted gas is fuelling the recent activity.

Abstract Copyright: © 2010 The Authors. Journal compilation © 2010 RAS

Journal keyword(s): galaxies: active - galaxies: individual: 4C29.30 - galaxies: nuclei - radio continuum: galaxies - radio lines: galaxies

Simbad objects: 10

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