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dc.contributor.authorRiffel, Rogériopt_BR
dc.contributor.authorHahn, Luis Gabriel Dahmerpt_BR
dc.contributor.authorRiffel, Rogemar Andrépt_BR
dc.contributor.authorStorchi-Bergmann, Thaisapt_BR
dc.contributor.authorDametto, Natacha Zanonpt_BR
dc.contributor.authorDavies, Richard I.pt_BR
dc.contributor.authorBurtscher, Leonardpt_BR
dc.contributor.authorBianchin, Marinapt_BR
dc.contributor.authorDutra, Daniel Ruschelpt_BR
dc.contributor.authorRicci, Claudiopt_BR
dc.contributor.authorRosario, Davidpt_BR
dc.date.accessioned2022-05-31T01:00:42Zpt_BR
dc.date.issued2022pt_BR
dc.identifier.issn0035-8711pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/239482pt_BR
dc.description.abstractWe use Gemini Near-Infrared Integral Field Spectrograph (NIFS) adaptive optics assisted data cubes to map the stellar population of the inner few hundred parsec of a sample of 18 nearby Seyfert galaxies. The near-infrared light is dominated by the contribution of young to intermediate-age stellar populations, with light-weighted mean ages ‹t›L ≲ 1.5 Gyr. Hot dust (HD) emission is centrally peaked (in the unresolved nucleus), but it is also needed to reproduce the continuum beyond the nucleus in nearly half of the sample. We have analysed the stellar population properties of the nuclear region and their relation with more global properties of the galaxies. We find a correlation between the X-ray luminosity and the contributions from the HD, featureless continuum (FC), and reddening AV. We attribute these correlations to the fact that all these properties are linked to the mass accretion rate to the active galactic nuclei (AGNs). We also find a correlation of the bolometric luminosity log(LBolobs) with the mass-weighted mean age of the stellar population, interpreted as due a delay between the formation of new stars and the triggering/feeding of the AGN. The gas reaching the supermassive black hole is probably originated from mass loss from the already somewhat evolved intermediate-age stellar population (‹t›L ≲ 1.5 Gyr). In summary, our results show that there is a significant fraction of young to intermediate-age stellar populations in the inner few 100 pc of active galaxies, suggesting that this region is facing a rejuvenation process in which the AGN, once triggered, precludes further star formation, in the sense that it can be associated with the lack of new star formation in the nuclear region.en
dc.format.mimetypeapplication/pdfpt_BR
dc.language.isoengpt_BR
dc.relation.ispartofMonthly notices of the royal astronomical society. Oxford. Vol. 512, no. 3 (Apr. 2022), p. 3906–3921pt_BR
dc.rightsOpen Accessen
dc.subjectGalaxies : Activeen
dc.subjectGaláxias ativaspt_BR
dc.subjectEvolucao galaticapt_BR
dc.subjectGalaxies : Evolutionen
dc.subjectPopulacoes estelarespt_BR
dc.subjectGalaxies : Stellar contenten
dc.titleGemini NIFS survey of feeding and feedback processes in nearby active galaxies : VI. Stellar populationspt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb001140746pt_BR
dc.type.originEstrangeiropt_BR


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