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dc.contributor.authorRodríguez-Ardila, Alberto
dc.contributor.authorMason, Rachel E.
dc.contributor.authorMartins, Lucimara P.
dc.contributor.authorRamos Almeida, Christina
dc.contributor.authorRiffel, Rogério A.
dc.contributor.authorRiffel, Rogemar André
dc.contributor.authorLira, Paulina
dc.contributor.authorGonzález-Martín, Omaira
dc.contributor.authorMcDermid, Richard Mc
dc.contributor.authorPerlman, Eric S.
dc.date.accessioned2017-10-11T20:03:02Z
dc.date.available2017-10-11T20:03:02Z
dc.date.issued2016-10-14
dc.identifier.citationRodríguez-Ardila, A., Mason, R.E., Martins, L., Ramos Almeida, C., Riffel, R.A., Riffel, R., Lira, P., González Martín, O., Dametto, N.Z., Flohic, H., Ho, L.C., Ruschel-Dutra, D., Thanjavur, K., Colina, L., McDermid, R.M., Perlman, E., Winge, C. The complex, dusty narrow-line region of NGC 4388: Gas-jet interactions, outflows and extinction revealed by near-IR spectroscopy (2017) Monthly Notices of the Royal Astronomical Society, 465 (1), pp. 906-925.en_US
dc.identifier.urihttp://hdl.handle.net/11141/1853
dc.descriptionGalaxies: individual: NGC 4388, Galaxies: jets, Galaxies: nuclei, Galaxies: Seyfert, Infrared: galaxiesen_US
dc.description.abstractWe present Gemini/GNIRS (Gemini Near-Infrared Spectrograph) spectroscopy of the Seyfert 2 galaxy NGC 4388, with simultaneous coverage from 0.85 to 2.5 μm. Several spatially extended emission lines are detected for the first time, both in the obscured and unobscured portion of the optical narrow-line region (NLR), allowing us to assess the combined effects of the central continuum source, outflowing gas and shocks generated by the radio jet on the central 280 pc gas. The HI and [Fe II] lines allow us to map the extinction affecting the NLR. We found that the nuclear region is heavily obscured, with E(B - V) ~ 1.9 mag. To the NE of the nucleus and up to ~150 pc, the extinction remains large, ~1 mag or larger, consistent with the system of dust lanes seen in optical imaging.We derived position-velocity diagrams for the most prominent lines as well as for the stellar component. Only the molecular gas and the stellar component display a well-organized pattern consistent with disc rotation. Other emission lines are kinematically perturbed or show little evidence of rotation. Extended high-ionization emission of sulphur, silicon and calcium is observed to distances of at least 200 pc both NE and SW of the nucleus. We compared flux ratios between these lines with photoionization models and conclude that radiation from the central source alone cannot explain the observed high-ionization spectrum. Shocks between the radio jet and the ambient gas are very likely an additional source of excitation. We conclude that NGC 4388 is a prime laboratory to study the interplay between all these mechanisms. © 2016 The Authors.en_US
dc.language.isoen_USen_US
dc.rights© 2016 the Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.en_US
dc.rights.urihttps://academic.oup.com/journals/pages/access_purchase/rights_and_permissions/self_archiving_policy_pen_US
dc.titleThe complex, dusty narrow-line region of NGC 4388: Gas-jet interactions, outflows and extinction revealed by near-IR spectroscopyen_US
dc.typeArticleen_US
dc.identifier.doi10.1093/mnras/stw2642


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