Near- to mid-infrared imaging and spectroscopy of two buried AGNs of the nearby merging galaxy NGC6240 with Subaru/IRCS+AO and GTC/CanariCam

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dc.contributor.authorMori, Tamami I.
dc.contributor.authorImanishi, Masatoshi
dc.contributor.authorAlonso-Herrero, Almudena
dc.contributor.authorPackham, Chris
dc.contributor.authorRamos Almeida, Cristina
dc.contributor.authorNikutta, Robert
dc.contributor.authorGonzález-MARTÍN, Omaira
dc.contributor.authorPerlman, Erick
dc.contributor.authorSaito, Yuriko
dc.contributor.authorLevenson, Nancy A.
dc.date.accessioned2023-01-03T19:49:58Z
dc.date.available2023-01-03T19:49:58Z
dc.date.issued2014
dc.descriptionIndexación: Scopuses
dc.description.abstractWe report near-infrared K′, L′, and M′ band imaging observations of the nearby merging galaxy NGC6240 with the Infrared Camera and Spectrograph on the Subaru telescope. The observations were performed with the assistance of the Subaru Adaptive Optics System, and the achieved spatial resolutions were around 0″.10-0″.20. We also obtained new mid-infrared imaging in the Si-2 filter band (8.7 μm) and N-band (7.5-13 μm) spectroscopy of this galaxy with the CanariCam on the Gran Telescopio Canarias with a spatial resolution of 0″.4-0″.5. In the K′ band image the two nuclei of the galaxy each show a double peak suggesting the complex geometry of the source, while the L′, M′, and Si-2 band images show single compact structures in each of the two nuclei. Assuming that the center core observed at wavelengths longer than 3.8 μm is associated with dust heated by the buried AGN, we re-evaluated the spectral energy distributions (SEDs) of the southern nucleus from 2 to 30 μm with additional literature values, and performed the SED+spectroscopy fit using the clumpy torus models of Nenkova et al. (2008a, ApJ, 685, 145; 2008b, ApJ, 685, 160) and a Bayesian fitting approach. The model fit suggests that the high covering factor torus emission in the southern nucleus is also obscured by foreground dust in the host galaxy. The estimated AGN bolometric luminosity of the southern nucleus, Lbol (AGN) ∼ 1 × 1045 erg s-1, accounts for approximately 40% of the whole luminosity of the system. © The Author 2014.es
dc.description.urihttps://academic-oup-com.recursosbiblioteca.unab.cl/pasj/article/66/5/93/2337633
dc.identifier.doi10.1093/pasj/psu068
dc.identifier.issn0004-6264
dc.identifier.urihttps://repositorio.unab.cl/xmlui/handle/ria/35782
dc.language.isoenes
dc.publisherOxford University Presses
dc.rights.licenseAtribución 4.0 Internacional (CC BY 4.0)
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/deed.es
dc.subjectGalaxieses
dc.subjectActivees
dc.subjectGalaxieses
dc.subjectNucleies
dc.subjectGalaxieses
dc.subjectStarburstes
dc.subjectInfraredes
dc.subjectGalaxieses
dc.titleNear- to mid-infrared imaging and spectroscopy of two buried AGNs of the nearby merging galaxy NGC6240 with Subaru/IRCS+AO and GTC/CanariCames
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Publications of the Astronomical Society of Japan Volume 66, Issue 51 October 2014
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