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  1. OA@INAF
  2. PRODOTTI RICERCA INAF
  3. 1 CONTRIBUTI IN RIVISTE (Journal articles)
  4. 1.01 Articoli in rivista
Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12386/29046
Title: LoTSS/HETDEX: Disentangling star formation and AGN activity in gravitationally lensed radio-quiet quasars
Authors: Stacey, H. R.
McKean, J. P.
Jackson, N. J.
Best, P. N.
Calistro Rivera, G.
Callingham, J. R.
Duncan, K. J.
Gürkan, G.
Hardcastle, M. J.
Iacobelli, M.
Mechev, A. P.
Morabito, L. K.
PRANDONI, ISABELLA 
Röttgering, H. J. A.
Sabater, J.
Shimwell, T. W.
Tasse, C.
Williams, W. L.
Issue Date: 2019
Journal: ASTRONOMY & ASTROPHYSICS 
Number: 622
First Page: A18
Abstract: Determining the star-forming properties of radio-quiet quasars is important for understanding the co-evolution of star formation and black hole accretion. We present the detection of the gravitationally lensed radio-quiet quasars SDSS J1055+4628, SDSS J1313+5151, and SBS 1520+530 at 144 MHz, which fall in the HETDEX Spring Field targeted in the LOFAR Two-metre Sky Survey (LoTSS) first full data release. We compare their radio and far-infrared luminosities relative to the radio-infrared correlation and find that their radio luminosities can be explained by star formation. The implied star formation rates derived from their radio and infrared luminosities are between 20 and 300 M <SUB>☉</SUB> yr<SUP>-1</SUP>. These detections represent the first study of gravitationally lensed sources with LOFAR, opening a new frequency window for investigating the star-forming properties of high-redshift quasars at radio wavelengths. We consider the implications for future data releases and estimate that many of the objects in our parent sample will be detected during LoTSS, significantly increasing the fraction of gravitationally lensed radio-quiet quasars with radio detections.
URI: http://hdl.handle.net/20.500.12386/29046
URL: https://www.aanda.org/articles/aa/full_html/2019/02/aa33967-18/aa33967-18.html
ISSN: 0004-6361
DOI: 10.1051/0004-6361/201833967
Bibcode ADS: 2019A&A...622A..18S
Fulltext: open
Appears in Collections:1.01 Articoli in rivista

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