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Feeding versus feedback in AGN from near-infrared IFU observations : the case of Mrk 766
dc.contributor.author | Schönell Júnior, Astor João | pt_BR |
dc.contributor.author | Riffel, Rogemar André | pt_BR |
dc.contributor.author | Storchi-Bergmann, Thaisa | pt_BR |
dc.contributor.author | Winge, Claudia | pt_BR |
dc.date.accessioned | 2015-02-20T02:20:17Z | pt_BR |
dc.date.issued | 2014 | pt_BR |
dc.identifier.issn | 0035-8711 | pt_BR |
dc.identifier.uri | http://hdl.handle.net/10183/110242 | pt_BR |
dc.description.abstract | We have mapped the emission-line flux distributions and ratios as well as the gaseous kinematics of the inner 450 pc radius of the type 1 Seyfert galaxy Mrk 766 using integral field near-infrared J- and Kl-band spectra obtained with the Gemini Near Infrared Integral Field Spectrograph at a spatial resolution of 60 pc and velocity resolution of 40 kms-ˡ. Emission-line flux distributions in ionized and molecular gas extend up to≈300 pc from the nucleus. Coronal [S IX] λ1.2523 μm line emission is resolved, being extended up to 150 pc from the nucleus. At the highest flux levels, the [Fe II] λ1.257 μm line emission is most extended to the south-east, where a radio jet has been observed. The emission-line ratios [Fe II] λ1.2570 μm/Paβ and H2λ2.1218 μm/Brγ show a mixture of Starburst and Seyfert excitation; the Seyfert excitation dominates at the nucleus, to the north-west and in an arc-shaped region between 0.2 and 0.6 arcsec to the south-east at the location of the radio jet. A contribution from shocks at this location is supported by enhanced [Fe II]/[P II] line ratios and increased [Fe II] velocity dispersion. The gas velocity field is dominated by rotation that is more compact for H2 than for Paβ, indicating that the molecular gas has a colder kinematics and is located in the galaxy plane. There is about 103 Mʘ of hot H2, implying ≈109 Mʘ of cold molecular gas. At the location of the radio jet, we observe an increase in the [Fe II] velocity dispersion (150 km s-ˡ), as well as both blueshift and redshifts in the channel maps, supporting the presence of an outflow there. The ionized gas mass outflow rate is estimated to be ≈10 Mʘ yr-ˡ, and the power of the outflow ≈0.08 Lbol. | en |
dc.format.mimetype | application/pdf | |
dc.language.iso | eng | pt_BR |
dc.relation.ispartof | Monthly notices of the Royal Astronomical Society. Oxford. Vol. 445, no. 1 (Nov. 2014), p. 414-427 | pt_BR |
dc.rights | Open Access | en |
dc.subject | Galaxies: active | en |
dc.subject | Galaxias seyfert | pt_BR |
dc.subject | Galaxies: individual: mrk 766 | en |
dc.subject | Galáxias ativas | pt_BR |
dc.subject | Nucleo galatico | pt_BR |
dc.subject | Galaxies: kinematics and dynamics | en |
dc.subject | Galaxies: nuclei | en |
dc.subject | Galaxies: seyfert | en |
dc.title | Feeding versus feedback in AGN from near-infrared IFU observations : the case of Mrk 766 | pt_BR |
dc.type | Artigo de periódico | pt_BR |
dc.identifier.nrb | 000949417 | pt_BR |
dc.type.origin | Estrangeiro | pt_BR |
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