Results 11 to 20 of about 96,351 (238)

The triggering probability of radio-loud AGN: A comparison of high and low excitation radio galaxies in hosts of different colors [PDF]

, 2012
Low luminosity radio-loud active galactic nuclei (AGN) are generally found in massive red elliptical galaxies, where they are thought to be powered through gas accretion from their surrounding hot halos in a radiatively inefficient manner.
Abazajian, Baldwin, Balogh, Becker, Best, Best, Best, Best, Brinchmann, Condon, Croton, Evans, H. J. A. Röttgering, Hardcastle, Hickox, J. Brinchmann, Kauffmann, Kauffmann, Kauffmann, Martin, Matthews, P. N. Best, R. M. J. Janssen, Schmidt, Stoughton, Strateva, Strauss, Tadhunter, Tasse, Whysong, York   +30 more
core   +3 more sources

What is driving the evolution of the far-infrared radio correlation? [PDF]

Zbornik Matice Srpske za Prirodne Nauke, 2019
Far infrared-radio correlation represents a linear relationship between far-infrared (FIR) and radio emission in star-forming galaxies. Previous observations have confirmed that this correlation is maintained over a large range of redshift and ...
Pavlović Marina S., Prodanović Tijana S.   +1 more
doaj   +1 more source

Does the fir-radio correlation evolve with redshift in irregular and disk galaxies? [PDF]

Serbian Astronomical Journal, 2021
It was confirmed that there is a strong linear correlation between the thermal far-infrared (FIR) and non-thermal radio emission of the star-forming galaxies.
Pavlović M.S.
doaj   +1 more source

Morphological-based Analyses for Parameterizing Symmetry in Radio Galaxies

The Astronomical Journal, 2023
The morphology of radio galaxies can provide significant clues to describe the formation and evolution of galaxies in the Universe. Here, we aim to extract the morphological parameters of radio galaxies and define symmetry criteria as some of the ...
Mohsen Javaherian, Halime Miraghaei, Hooman Moradpour   +2 more
doaj   +1 more source

Radio galaxies: unification and dust properties [PDF]

New Astronomy Reviews, 2003
The 2002 status of unification models for extragalactic radio sources is examined, with particular emphasis on the dust properties of these objects.
Barthel, P, van Bemmel, I
openaire   +3 more sources

COLA II - Radio and Spectroscopic Diagnostics of Nuclear Activity in Galaxies [PDF]

, 2002
We present optical spectroscopic observations of 93 galaxies taken from the infra-red selected COLA (Compact Objects in Low Power AGN) sample. The sample spans the range of far-IR luminosities from normal galaxies to LIRGs.
A. Marston, A. Zezas, C. A. Heisler, Clavel J., de Grijp M. H. K., E. A. Corbett, Efstathiou A., Fairall A. P., Fairall A. P., Gardner F. F., Hagiwara Y., Heckman T., Heisler C. A., Keel W. C., Knappen J. H., L. Kewley, Laurent O., M. A. Dopita, Martin J. M., P. N. Appleton, R. P. Norris, V. Charmandaris   +21 more
core   +2 more sources

Statistical Properties of Radio Emission from the Palomar Seyfert Galaxies [PDF]

, 2001
We have carried out an analysis of the radio and optical properties of a statistical sample of 45 Seyfert galaxies from the Palomar spectroscopic survey of nearby galaxies.
Antonucci R. R. J., Busko I. C., Clark D. H., de Bruyn A. G., de Bruyn A. G., de Grijp M. H. K., Isobe T., James S. Ulvestad, Kukula M. J., Luis C. Ho, Meurs E. J. A., Pedlar A., Perley R. A., Unger S. W., Whittle M., Whittle M.   +15 more
core   +2 more sources

Compact radio sources and jet-driven AGN feedback in the early Universe: Constraints from integral-field spectroscopy [PDF]

, 2007
To investigate the impact of radio jets during the formation epoch of their massive host galaxies, we present an analysis of two massive, log(M_stel/ M_sun)~10.6 and 11.3, compact radio galaxies at z=3.5, TNJ0205+2242 and TNJ0121+1320.
A. Gilbert, Axon, Barnes, Begelman, Benson, Best, Bicknell, Blundell, Bonnet, Bullock, C. De Breuck, Capetti, Croton, De Breuck, De Breuck, De Breuck, De Breuck, De Breuck, De Young, Di Matteo, Downes, Holt, Holt, Hopkins, Inskip, Inskip, Inskip, Iwamuro, Kauffmann, Laing, M. D. Lehnert, McCarthy, Morganti, Murgia, N. P. H. Nesvadba, Nelson, Nesvadba, Nesvadba, O'Dea, O'Dea, Owsianik, Papadopoulos, Pedlar, Pounds, Readhead, Silk, Sulentic, Tadhunter, Tadhunter, Tadhunter, van Breugel, Villar-Martín, Villar-Martín, Villar-Martín, Villar-Martín, W. van Breugel, Wellman, Willott   +57 more
core   +1 more source

Radio Galaxy Zoo: The Distortion of Radio Galaxies by Galaxy Clusters [PDF]

The Astronomical Journal, 2019
Abstract We study the impact of cluster environment on the morphology of a sample of 4304 extended radio galaxies from Radio Galaxy Zoo. A total of 87% of the sample lies within a projected 15 Mpc of an optically identified cluster. Brightest cluster galaxies (BCGs) are more likely than other cluster members to be radio sources, and are ...
Avery F. Garon, Lawrence Rudnick, O. Ivy Wong, Tom W. Jones, Jin-Ah Kim, Heinz Andernach, Stanislav S. Shabala, Anna D. Kapińska, Ray P. Norris, Francesco de Gasperin, Jean Tate, Hongming Tang   +11 more
openaire   +3 more sources

Extragalactic Magnetism with SOFIA (SALSA Legacy Program). V. First Results on the Magnetic Field Orientation of Galaxies

The Astrophysical Journal, 2023
We present the analysis of the magnetic field ( B -field) structure of galaxies measured with far-infrared (FIR) and radio (3 and 6 cm) polarimetric observations.
Alejandro S. Borlaff, Enrique Lopez-Rodriguez, Rainer Beck, Susan E. Clark, Evangelia Ntormousi, Konstantinos Tassis, Sergio Martin-Alvarez, Mehrnoosh Tahani, Daniel A. Dale, Ignacio del Moral-Castro, Julia Roman-Duval, Pamela M. Marcum, John E. Beckman, Kandaswamy Subramanian, Sarah Eftekharzadeh, Leslie Proudfit   +15 more
doaj   +1 more source