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2003MNRAS.338..643J - Mon. Not. R. Astron. Soc., 338, 643-654 (2003/January-3)
Observations of the neutral gas and dust in the radio galaxy 3C 305.
JACKSON N., BESWICK R., PEDLAR A., COLE G.H., SPARKS W.B., LEAHY J.P., AXON D.J. and HOLLOWAY A.J.
Abstract (from CDS):
We compare the optical and radio images in order to investigate the relationship between the dust and neutral gas distributions. An unresolved (0.07 arcsec) nucleus is detected in H and K and its properties are consistent with a quasar reddened by AV> 4. We propose that the absorption arises in a region of neutral gas and dust. Its structure is complex but is broadly consistent with an inclined disc of gas and dust encircling, but not covering, the active galactic nucleus. A comparison of the neutral gas observations and previous emission-line observations suggests that both the neutral and ionized gas are undergoing galactic rotation towards the observer in the north-east and away from the observer in the south-west. We propose that the outflow giving rise to the radio emission has a component towards the observer in the north-east and away from the observer in the south-west. Unfortunately, as we do not detect radio emission from the compact nucleus, we cannot set limits to neutral hydrogen absorption from a circumnuclear obscuring torus.
Abstract Copyright: RAS
Journal keyword(s): ISM: general - galaxies: individual: 3C 305 - galaxies: ISM - galaxies: nuclei - radio lines: galaxies
Nomenclature: Table 2: [JBP2003] Star N (Nos 1-4). Table 3: [JBP2003] WW Arm (Nos NE, SW), [JBP2003] WW Lobe (Nos NE, SW), [JBP2003] WW Jet (Nos NE, SW), [JBP2003] NE Jet A (Nos A-B).
Simbad objects: 17
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