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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
earth and planetary sciences
Herschel-ATLAS: Far-infrared properties of radio-loud and radio-quiet quasars
Monthly Notices of the Royal Astronomical Society, Volume 442, No. 2, Year 2014
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Description
We have constructed a sample of radio-loud and radio-quiet quasars from the Faint Images Radio Sky at Twenty-one centimetres and the Sloan Digital Sky Survey Data Release 7, over the Herschel-ATLAS Phase 1 area (9h, 12h and 14. h 5). Using a stacking analysis, we find a significant correlation between the far-infrared (FIR) luminosity and 1.4-GHz luminosity for radio-loud quasars. Partial correlation analysis confirms the intrinsic correlation after removing the redshift contribution, while for radio-quiet quasars, no partial correlation is found. Using a single-temperature grey-body model, we find a general trend of lower dust temperatures in case of radio-loud quasars compared to radio-quiet quasars. Also, radio-loud quasars are found to have almost constant mean values of dust mass along redshift and optical luminosity bins. In addition, we find that radio-loud quasars at lower optical luminosities tend to have on average higher FIR and 250-μm luminosity with respect to radio-quiet quasars with the same optical luminosites. Even if we use a two-temperature grey-body model to describe the FIR data, the FIR luminosity excess remains at lower optical luminosities. These results suggest that powerful radio jets are associated with star formation especially at lower accretion rates. © 2014 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society.
Authors & Co-Authors
Kalfountzou, Eleni
United Kingdom, Hatfield
University of Hertfordshire
Stevens, Jason A.
United Kingdom, Hatfield
University of Hertfordshire
Jarvis, Matthew J.
United Kingdom, Oxford
University of Oxford
South Africa, Bellville
University of the Western Cape
Hardcast, M. J.
United Kingdom, Hatfield
University of Hertfordshire
Smith, Daniel James B.
United Kingdom, Hatfield
University of Hertfordshire
Bourne, Nathan
United Kingdom, Nottingham
University of Nottingham
Dunne, Loretta
New Zealand, Christchurch
University of Canterbury
Ibar, E.
Chile, Valparaiso
Universidad de Valparaiso
Eales, Stephen A.
United Kingdom, Cardiff
Cardiff University
Ivison, Robert J.
United Kingdom, Edinburgh
University of Edinburgh, Institute for Astronomy
Germany, Garching Bei Munchen
European Southern Observatory
Maddox, Steve J.
New Zealand, Christchurch
University of Canterbury
Smith, Matthew W.L.
United Kingdom, Cardiff
Cardiff University
Valiante, Elisabetta
United Kingdom, Cardiff
Cardiff University
de Zotti, Gianfranco
Italy, Padua
Osservatorio Astronomico Di Padova
Italy, Trieste
Scuola Internazionale Superiore Di Studi Avanzati
Statistics
Citations: 34
Authors: 14
Affiliations: 11
Identifiers
Doi:
10.1093/mnras/stu782
ISSN:
00358711
e-ISSN:
13652966
Study Design
Cross Sectional Study
Study Approach
Quantitative