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dc.contributor.authorRosario, Davidpt_BR
dc.contributor.authorRiffel, Rogériopt_BR
dc.contributor.authorSchnorr Müller, Allanpt_BR
dc.contributor.authorStorchi-Bergmann, Thaisapt_BR
dc.contributor.authorVeilleux, Sylvainpt_BR
dc.date.accessioned2018-05-11T02:33:13Zpt_BR
dc.date.issued2018pt_BR
dc.identifier.issn0035-8711pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/178119pt_BR
dc.description.abstractUsing new Atacama Pathfinder Experiment and James Clerk Maxwell Telescope spectroscopy of the CO 2→1 line, we undertake a controlled study of cold molecular gas in moderately luminous (Lbol = 1043–44.5 erg s−1) active galactic nuclei (AGN) and inactive galaxies from the Luminous Local AGN with Matched Analogs (LLAMA) survey.We use spatially resolved infrared photometry of the LLAMA galaxies from 2MASS, the Wide-field Infrared Survey Explorer the Infrared Astronomical Satellite and the Herschel Space Observatory (Herschel), corrected for nuclear emission using multicomponent spectral energy distribution fits, to examine the dust-reprocessed star formation rates, molecular gas fractions and star formation efficiencies (SFEs) over their central 1–3 kpc. We find that the gas fractions and central SFEs of both active and inactive galaxies are similar when controlling for host stellar mass and morphology (Hubble type). The equivalent central molecular gas depletion times are consistent with the discs of normal spiral galaxies in the local Universe. Despite energetic arguments that the AGN in LLAMA should be capable of disrupting the observable cold molecular gas in their central environments, our results indicate that nuclear radiation only couples weakly with this phase. We find a mild preference for obscured AGN to contain higher amounts of central molecular gas, which suggests connection between AGN obscuration and the gaseous environment of the nucleus. Systems with depressed SFEs are not found among the LLAMA AGN. We speculate that the processes that sustain the collapse of molecular gas into dense pre-stellar cores may also be a prerequisite for the inflow of material on to AGN accretion discs.en
dc.format.mimetypeapplication/pdfpt_BR
dc.language.isoengpt_BR
dc.relation.ispartofMonthly notices of the royal astronomical society. Oxford. Vol. 473, no. 4 (Feb. 2018), p. 5658-5679pt_BR
dc.rightsOpen Accessen
dc.subjectMethods: statisticalen
dc.subjectGalaxias seyfertpt_BR
dc.subjectFormacao de estrelaspt_BR
dc.subjectISM: moleculesen
dc.subjectGalaxies: ISMen
dc.subjectGaláxias ativaspt_BR
dc.subjectNucleo galaticopt_BR
dc.subjectGalaxies: star formationen
dc.subjectGalaxies: Seyferten
dc.subjectFotometria astronômicapt_BR
dc.subjectInfrared: galaxiesen
dc.titleLLAMA : normal star formation efficiencies of molecular gas in the centres of luminous Seyfert galaxiespt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb001062407pt_BR
dc.type.originEstrangeiropt_BR


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