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Star formation in quasar hosts and the origin of radio emission in radio-quiet quasars

Author(s): Zakamska, Nadia L; Lampayan, Kelly; Petric, Andreea; Dicken, Daniel; Greene, Jenny E.; et al

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dc.contributor.authorZakamska, Nadia L-
dc.contributor.authorLampayan, Kelly-
dc.contributor.authorPetric, Andreea-
dc.contributor.authorDicken, Daniel-
dc.contributor.authorGreene, Jenny E.-
dc.contributor.authorHeckman, Timothy M-
dc.contributor.authorHickox, Ryan C-
dc.contributor.authorHo, Luis C-
dc.contributor.authorKrolik, Julian H-
dc.contributor.authorNesvadba, Nicole PH-
dc.contributor.authorStrauss, Michael A.-
dc.contributor.authorGeach, James E-
dc.contributor.authorOguri, Masamune-
dc.contributor.authorStrateva, Iskra V-
dc.date.accessioned2019-10-09T19:32:56Z-
dc.date.available2019-10-09T19:32:56Z-
dc.date.issued2016-02-01en_US
dc.identifier.citationZakamska, Nadia L, Lampayan, Kelly, Petric, Andreea, Dicken, Daniel, Greene, Jenny E, Heckman, Timothy M, Hickox, Ryan C, Ho, Luis C, Krolik, Julian H, Nesvadba, Nicole PH, Strauss, Michael A, Geach, James E, Oguri, Masamune, Strateva, Iskra V. (2016). Star formation in quasar hosts and the origin of radio emission in radio-quiet quasars. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 455 (4191 - 4211. doi:10.1093/mnras/stv2571en_US
dc.identifier.issn0035-8711-
dc.identifier.urihttp://arks.princeton.edu/ark:/88435/pr15x65-
dc.description.abstractRadio emission from radio-quiet quasars may be due to star formation in the quasar host galaxy, to a jet launched by the supermassive black hole, or to relativistic particles accelerated in a wide-angle radiatively driven outflow. In this paper, we examine whether radio emission from radio-quiet quasars is a byproduct of star formation in their hosts. To this end, we use infrared spectroscopy and photometry from Spitzer and Herschel to estimate or place upper limits on star formation rates in hosts of similar to 300 obscured and unobscured quasars at z < 1. We find that low-ionization forbidden emission lines such as [ Ne (II)] and [ Ne (III)] are likely dominated by quasar ionization and do not provide reliable star formation diagnostics in quasar hosts, while polycyclic aromatic hydrocarbon (PAH) emission features may be suppressed due to the destruction of PAH molecules by the quasar radiation field. While the bolometric luminosities of our sources are dominated by the quasars, the 160 mu m fluxes are likely dominated by star formation, but they too should be used with caution. We estimate median star formation rates to be 6-29 M-circle dot yr(-1), with obscured quasars at the high end of this range. This star formation rate is insufficient to explain the observed radio emission from quasars by an order of magnitude, with log (L-radio, (obs)/ L-radio, (SF)) = 0.6-1.3 depending on quasar type and star formation estimator. Although radio-quiet quasars in our sample lie close to the 8-1000 mu m infrared/radio correlation characteristic of the star-forming galaxies, both their infrared emission and their radio emission are dominated by the quasar activity, not by the host galaxy.en_US
dc.format.extent4191 - 4211en_US
dc.language.isoen_USen_US
dc.relationhttps://ui.adsabs.harvard.edu/abs/2016MNRAS.455.4191Z/abstracten_US
dc.relation.ispartofMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETYen_US
dc.rightsFinal published version. Article is made available in OAR by the publisher's permission or policy.en_US
dc.titleStar formation in quasar hosts and the origin of radio emission in radio-quiet quasarsen_US
dc.typeJournal Articleen_US
dc.identifier.doidoi:10.1093/mnras/stv2571-
dc.date.eissued2015-12-04en_US
dc.identifier.eissn1365-2966-
pu.type.symplectichttp://www.symplectic.co.uk/publications/atom-terms/1.0/journal-articleen_US

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