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dc.contributor.authorEsquej Alonso, María Pilar
dc.contributor.authorAlonso Herrero, Almudena
dc.contributor.authorGonzález Martín, Omaira
dc.contributor.authorHönig, Sebastian F.
dc.contributor.authorHernán Caballero, Antonio
dc.contributor.authorRoche, Patrick F.
dc.contributor.authorRamos Almeida, Cristina
dc.contributor.authorMason, Rachel E.
dc.contributor.authorDíaz Santos, Tanio
dc.contributor.authorLevenson, Nancy A.
dc.contributor.authorAretxaga, Itziar
dc.contributor.authorRodríguez Espinosa, José Miguel
dc.contributor.authorPackham, Christopher
dc.contributor.otherUniversidad de Cantabriaes_ES
dc.date.accessioned2014-03-21T13:31:49Z
dc.date.available2014-03-21T13:31:49Z
dc.date.issued2014-01
dc.identifier.issn0004-637X
dc.identifier.issn1538-4357
dc.identifier.urihttp://hdl.handle.net/10902/4442
dc.description.abstractRecent theoretical and observational works indicate the presence of a correlation between the star-formation rate (SFR) and active galactic nucleus (AGN) luminosity (and, therefore, the black hole accretion rate, $\dot{M}_{\rm BH}$) of Seyfert galaxies. This suggests a physical connection between the gas-forming stars on kpc scales and the gas on sub-pc scales that is feeding the black hole. We compiled the largest sample of Seyfert galaxies to date with high angular resolution (~0.''4-0.''8) mid-infrared (8-13 μm) spectroscopy. The sample includes 29 Seyfert galaxies drawn from the AGN Revised Shapley-Ames catalog. At a median distance of 33 Mpc, our data allow us to probe nuclear regions on scales of ~65 pc (median value). We found no general evidence of suppression of the 11.3 μm polycyclic aromatic hydrocarbon (PAH) emission in the vicinity of these AGN, and we used this feature as a proxy for the SFR. We detected the 11.3 μm PAH feature in the nuclear spectra of 45% of our sample. The derived nuclear SFRs are, on average, five times lower than those measured in circumnuclear regions of 600 pc in size (median value). However, the projected nuclear SFR densities (median value of 22 M ☉ yr–1 kpc–2) are a factor of 20 higher than those measured on circumnuclear scales. This indicates that the SF activity per unit area in the central ~65 pc region of Seyfert galaxies is much higher than at larger distances from their nuclei. We studied the connection between the nuclear SFR and $\dot{M}_{\rm BH}$ and showed that numerical simulations reproduce our observed relation fairly well.es_ES
dc.format.extent15 p.es_ES
dc.language.isoenges_ES
dc.publisherAmerican Astronomical Societyes_ES
dc.publisherInstitute of Physicses_ES
dc.rights© 2014. The American Astronomical Society.es_ES
dc.sourceThe Astrophysical Journal, Vol. 780, Num. 1, p. 86, (2014)es_ES
dc.subject.otherGalaxies: nucleies_ES
dc.subject.otherGalaxies: Seyfertes_ES
dc.subject.otherInfrared: galaxieses_ES
dc.titleNuclear star formation activity and black hole accretion in nearby Seyfert galaxieses_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.relation.publisherVersionhttp://dx.doi.org/10.1088/0004-637X/780/1/86es_ES
dc.rights.accessRightsopenAccesses_ES
dc.identifier.DOI10.1088/0004-637X/780/1/86
dc.type.versionpublishedVersiones_ES


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