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dc.contributor.authorDametto, Natacha Zanonpt_BR
dc.contributor.authorRiffel, Rogériopt_BR
dc.contributor.authorColina, Luispt_BR
dc.contributor.authorRiffel, Rogemar Andrépt_BR
dc.contributor.authorPiqueras López, Javierpt_BR
dc.contributor.authorDavies, Richard I.pt_BR
dc.contributor.authorBurtscher, Leonardpt_BR
dc.contributor.authorMenezes, Roberto Bertoldopt_BR
dc.contributor.authorArribas, Santiagopt_BR
dc.contributor.authorPastoriza, Miriani Griseldapt_BR
dc.contributor.authorLabiano, Alvaropt_BR
dc.contributor.authorStorchi-Bergmann, Thaisapt_BR
dc.contributor.authorHahn, Luis Gabriel Dahmerpt_BR
dc.contributor.authorSales, Dinalva Aires dept_BR
dc.date.accessioned2019-06-20T02:36:04Zpt_BR
dc.date.issued2019pt_BR
dc.identifier.issn0035-8711pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/196016pt_BR
dc.description.abstractWe present a spatially resolved stellar population study of the inner∼200 pc radius ofNGC 4303 based on near-infrared integral field spectroscopy with SINFONI/VLT at a spatial resolution of 40–80 pc and using the STARLIGHT code. We found that the distribution of thestellar populations presents a spatial variation, suggesting an age stratification. Three main structures stand out. Two nuclear blobs, one composed by young stars (t≤50 Myr) and onewith intermediate-age stars (50 Myr<t≤2 Gyr), both shifted from the centre. The third oneis an internal intermediate-age spiral arm-like structure, surrounding the blob of young stars.Our results indicate that star formation has occurred through multiple bursts in this source. Furthermore, the youngest stellar populations (t 2 Gyr) are distributed along a circumnu-clear star-forming ring withr∼250 pc. The ring displays star formation rates (SFRs) in therange of 0.002–0.14 M yr−1, favouring the ‘pearls-on-a-string’ scenario. The old underlyingbulge stellar population component (t>2 Gyr) is distributed outside the two blob structures.For the nuclear region (inner∼60 pc radius) we derived an SFR of 0.43 M yr−1and foundno signatures of non-thermal featureless continuum and hot dust emission, supporting thescenario in which an LLAGN/LINER-like source is hidden in the centre of NGC 4303. Thus, our results reveal a rather complex star formation history in NGC 4303, with different stellar population components coexisting with a low efficiency accreting black hole in its centre.en
dc.format.mimetypeapplication/pdfpt_BR
dc.language.isoengpt_BR
dc.relation.ispartofMonthly notices of the Royal Astronomical Society. Oxford, England. Vol. 482, no. 4 (Feb. 2019), p. 4437-4453pt_BR
dc.rightsOpen Accessen
dc.subjectGaláxia NGC 4303pt_BR
dc.subjectFormacao de estrelaspt_BR
dc.subjectNucleo galaticopt_BR
dc.subjectEspectroscopia infravermelhapt_BR
dc.titleA SINFONI view of the nuclear activity and circumnuclear star formation in NGC4303-II. Spatially resolved stellar populationspt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb001095676pt_BR
dc.type.originEstrangeiropt_BR


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