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dc.contributor.authorRamasawmy, Joanna
dc.contributor.authorStevens, Jason
dc.contributor.authorMartin, Garreth
dc.contributor.authorGeach, James E.
dc.date.accessioned2019-05-23T14:05:14Z
dc.date.available2019-05-23T14:05:14Z
dc.date.issued2019-07-01
dc.identifier.citationRamasawmy , J , Stevens , J , Martin , G & Geach , J E 2019 , ' A flat trend of star-formation rate with X-ray luminosity of galaxies hosting AGN in the SCUBA-2 Cosmology Legacy Survey ' , Monthly Notices of the Royal Astronomical Society , vol. 486 , no. 3 , pp. 4320-4333 . https://doi.org/10.1093/mnras/stz1093
dc.identifier.issn0035-8711
dc.identifier.otherPURE: 16663910
dc.identifier.otherPURE UUID: f8c83292-1a06-4d5c-934f-21461764791f
dc.identifier.otherArXiv: http://arxiv.org/abs/1904.07880v1
dc.identifier.otherScopus: 85072257776
dc.identifier.otherORCID: /0000-0002-4010-8310/work/62747625
dc.identifier.urihttp://hdl.handle.net/2299/21348
dc.description© 2019 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society.
dc.description.abstractFeedback processes from active galactic nuclei (AGN) are thought to play a crucial role in regulating star formation in massive galaxies. Previous studies using Herschel have resulted in conflicting conclusions as to whether star formation is quenched, enhanced, or not affected by AGN feedback. We use new deep 850 μm observations from the SCUBA-2 Cosmology Legacy Survey (S2CLS) to investigate star formation in a sample of X-ray selected AGN, probing galaxies up to L 0.5-7keV = 10 46 erg s -1. Here, we present the results of our analysis on a sample of 1957 galaxies at 1 < z < 3, using both S2CLS and ancilliary data at seven additional wavelengths (24-500 μm) from Herschel and Spitzer. We perform a stacking analysis, binning our sample by redshift and X-ray luminosity. By fitting analytical spectral energy distributions (SEDs) to decompose contributions from cold and warm dust, we estimate star formation rates (SFRs) for each 'average' source. We find that the average AGN in our sample resides in a star-forming host galaxy, with SFRs ranging from 80 to 600 M ⊙ yr -1. Within each redshift bin, we see no trend of SFR with X-ray luminosity, instead finding a flat distribution of SFR across ∼3 orders of magnitude of AGN luminosity. By studying instantaneous X-ray luminosities and SFRs, we find no evidence that AGN activity affects star formation in host galaxies.en
dc.format.extent14
dc.language.isoeng
dc.relation.ispartofMonthly Notices of the Royal Astronomical Society
dc.subjectastro-ph.GA
dc.subjectgalaxies: active
dc.subjectgalaxies: evolution
dc.subjectgalaxies: star formation
dc.subjectquasars: supermassive black holes
dc.subjectAstronomy and Astrophysics
dc.subjectSpace and Planetary Science
dc.titleA flat trend of star-formation rate with X-ray luminosity of galaxies hosting AGN in the SCUBA-2 Cosmology Legacy Surveyen
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.contributor.institutionCentre for Astrophysics Research
dc.contributor.institutionCentre of Data Innovation Research
dc.description.statusPeer reviewed
dc.identifier.urlhttp://www.scopus.com/inward/record.url?scp=85072257776&partnerID=8YFLogxK
rioxxterms.versionAM
rioxxterms.versionofrecordhttps://doi.org/10.1093/mnras/stz1093
rioxxterms.typeJournal Article/Review


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