SIMBAD references

2001MNRAS.325..737T - Mon. Not. R. Astron. Soc., 325, 737-760 (2001/August-1)

High-resolution radio observations of Seyfert galaxies in the extended 12-µm sample - II. The properties of compact radio components.

THEAN A., PEDLAR A., KUKULA M.J., BAUM S.A. and O'DEA C.P.

Abstract (from CDS):

We discuss the properties of compact nuclear radio components in Seyfert galaxies from the extended 12-µm AGN sample of Rush et al. Our main results can be summarized as follows.

Type 1 and type 2 Seyferts produce compact radio components which are indistinguishable in strength and aspect, indicating that their central engines are alike, as proposed by the unification model. Infrared IRAS fluxes are more closely correlated with low-resolution radio fluxes than high-resolution radio fluxes, suggesting that they are dominated by kiloparsec-scale, extranuclear emission regions; extranuclear emission may be stronger in type 2 Seyferts. Early-type Seyfert galaxies tend to have stronger nuclear radio emission than late-type Seyfert galaxies. V-shaped extended emission-line regions, indicative of `ionization cones', are usually found in sources with large, collimated radio outflows. Hidden broad lines are most likely to be found in sources with powerful nuclear radio sources. Type 1 and type 2 Seyferts selected by their IRAS 12-µm flux densities have well-matched properties.


Abstract Copyright: The Royal Astronomical Society

Journal keyword(s): galaxies: active - galaxies: Seyfert - galaxies: statistics - infrared: galaxies - radio continuum: galaxies

CDS comments: p.749: misprint NGC 4258 should be NGC 4253, p.750: misprints IRAS F01475-0475 should be IRAS F01475-0740 and IRAS F05189-3524 should be IRAS F05189-2524. In table A2, positions which have an asterisk in column 5, have RA and DEC in equinox B1950 (not J2000 as advertised).

Simbad objects: 165

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2020.11.25-13:11:24

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