Extended radio sources and elliptical galaxies. I - Small-diameter components in extended structures. II - A search for radio cores using the VLA

1978 ◽  
Vol 83 ◽  
pp. 704 ◽  
Author(s):  
A. H. Bridle ◽  
E. B. Fomalont
Keyword(s):  
Small Diameter ◽  
Elliptical Galaxies ◽  
Radio Sources ◽  
Extended Radio

Tables of physical and morphological properties of nearby extended radio galaxies

2021 ◽  
pp. 75-89
Author(s):  
R. R. Andreasyan ◽  
H. V. Abrahamyan
Keyword(s):  
Radio Galaxies ◽  
Elliptical Galaxies ◽  
Morphological Data ◽  
Morphological Properties ◽  
Radio Sources ◽  
Extragalactic Radio Sources ◽  
Extended Radio

It is brought the physical and morphological data of 267 nearby radio galaxies identified with elliptical galaxies brighter than 18th magnitude (sample 1) and for 280 extragalactic radio sources with known position angles between the integrated intrinsic radio polarization and radio axes (sample 2).

Extended radio sources and elliptical galaxies. V - Optical positions for 40 identified sources

1980 ◽  
Vol 85 ◽  
pp. 995
Author(s):  
J. J. Palimaka ◽  
A. H. Bridle ◽  
E. B. Fomalont
Keyword(s):  
Elliptical Galaxies ◽  
Radio Sources ◽  
Extended Radio

scholarly journals Radio Frequency Observations of the Nuclei of Galaxies

1974 ◽  
Vol 58 ◽  
pp. 257-277 ◽  
Author(s):  
R. D. Ekers
Keyword(s):  
Seyfert Galaxies ◽  
Morphological Type ◽  
Elliptical Galaxies ◽  
Infrared Emission ◽  
Radio Sources ◽  
Extended Radio ◽  
Median Diameter ◽  
Extended Sources ◽  
Highly Correlated ◽  
Ngc 1275

For spiral galaxies the nuclear radio emission is usually dominated by a complex distribution of emission with median diameter of 200 pc and median power of 1019 W Hz−1 sr−1 at 1400 MHz. There is a large range in both power and diameter. The power is independent of morphological type for the normal spirals but is correlated with the absolute optical magnitude and with the infrared emission. For Seyfert galaxies the emission is generally stronger, in some cases by several orders of magnitude (e.g. NGC 1275, 3C 120).Elliptical galaxies have been found with very compact radio sources, some less than a parsec in diameter. These are as powerful as the strongest spirals (~ 1021 W Hz−1 sr−1). Even stronger compact nuclear sources are now being found in the nuclei of those elliptical galaxies which also have extended radio sources (the radio galaxies). The presence of nuclear sources of this strength is so highly correlated with the presence of extended sources that this suggests a continuing involvement of the nucleus.

scholarly journals Compact Radio Sources in the Nuclei of Elliptical Galaxies

1972 ◽  
Vol 44 ◽  
pp. 222-223 ◽  
Author(s):  
R. D. Ekers
Keyword(s):  
Radio Emission ◽  
Angular Size ◽  
Optical Emission ◽  
Elliptical Galaxies ◽  
Emission Lines ◽  
Radio Sources ◽  
Radio Luminosity ◽  
Compact Source ◽  
Extended Radio

Ten percent of the intrinsically bright elliptical galaxies contain compact radio sources (angular size < 3 arc sec) with radio luminosity ∼ 1040 erg s−1. The presence of a compact source is correlated with the presence of extended radio emission and with the presence of optical emission lines.

Extended radio sources and elliptical galaxies. IV - Structures of 40 resolved sources

1980 ◽  
Vol 85 ◽  
pp. 981 ◽  
Author(s):  
E. B. Fomalont ◽  
J. J. Palimaka ◽  
A. H. Bridle
Keyword(s):  
Elliptical Galaxies ◽  
Radio Sources ◽  
Extended Radio

Extended radio sources and elliptical galaxies. III - Optical positions for galaxy centers

1979 ◽  
Vol 84 ◽  
pp. 1111 ◽  
Author(s):  
R. E. Goodson ◽  
J. J. Palimaka ◽  
A. H. Bridle
Keyword(s):  
Elliptical Galaxies ◽  
Radio Sources ◽  
Extended Radio

The Gaseous Environments of Powerful Extended Radio Sources

1997 ◽  
Vol 480 (1) ◽  
pp. 96-114 ◽  
Author(s):  
Greg F. Wellman ◽  
Ruth A. Daly ◽  
Lin Wan
Keyword(s):  
Radio Sources ◽  
Extended Radio

scholarly journals The Nature of Faint Radio Sources

1986 ◽  
Vol 7 ◽  
pp. 345-353
Author(s):  
J V Wall ◽  
C R Benn ◽  
G Grueff ◽  
M Vigotti
Keyword(s):  
Elliptical Galaxies ◽  
Aperture Synthesis ◽  
Radio Sources ◽  
Mixed Group ◽  
Blue Galaxies ◽  
Infrared Data

AbstractRadio, optical and infrared data are combined to study the nature of mJy-sources found in the 5C12 aperture-synthesis survey. The optical counterparts are QSOs, giant elliptical galaxies of the 3CR type, and blue galaxies. We find that the blue galaxies are a mixed group; the suggestion of a new blue population of evolving spirals at mJy levels is not supported by our data.

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