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The nuclear and extended infrared emission of the Seyfert galaxy NGC 2992 and the interacting system Arp 245

García-Bernete, I. and Almeida, C. Ramos and Acosta-Pulido, J. A. and Alonso-Herrero, A. and Sánchez-Portal, M. and Castillo, M. and Pereira-Santaella, M. and Esquej, P. and González-Martín, O. and Díaz-Santos, T. and Roche, P. and Fisher, S. and Pović, M. and Pérez-García, A. M. and Valtchanov, I. and Packham, C. and Levenson, N. A. (2015) The nuclear and extended infrared emission of the Seyfert galaxy NGC 2992 and the interacting system Arp 245. Monthly Notices of the Royal Astronomical Society, 449 (2). pp. 1309-1326. ISSN 0035-8711. https://resolver.caltech.edu/CaltechAUTHORS:20150626-113237088

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Abstract

We present subarcsecond resolution infrared (IR) imaging and mid-IR (MIR) spectroscopic observations of the Seyfert 1.9 galaxy NGC 2992, obtained with the Gemini North Telescope and the Gran Telescopio CANARIAS (GTC). The N-band image reveals faint extended emission out to ∼3 kpc, and the polycyclic aromatic hydrocarbon features detected in the GTC/CanariCam 7.5–13 μm spectrum indicate that the bulk of this extended emission is dust heated by star formation. We also report arcsecond resolution MIR and far-IR imaging of the interacting system Arp 245, taken with the Spitzer Space Telescope and the Herschel Space Observatory. Using these data, we obtain nuclear fluxes using different methods and find that we can only recover the nuclear fluxes obtained from the subarcsecond data at 20–25 μm, where the active galactic nuclei (AGN) emission dominates. We fitted the nuclear IR spectral energy distribution of NGC 2992, including the GTC/CanariCam nuclear spectrum (∼50 pc), with clumpy torus models. We then used the best-fitting torus model to decompose the Spitzer/IRS 5–30 μm spectrum (∼630 pc) in AGN and starburst components, using different starburst templates. We find that, whereas at shorter MIR wavelengths the starburst component dominates (64 per cent at 6 μm), the AGN component reaches 90 per cent at 20 μm. We finally obtained dust masses, temperatures and star formation rates for the different components of the Arp 245 system and find similar values for NGC 2992 and NGC 2993. These measurements are within those reported for other interacting systems in the first stages of the interaction.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1093/mnras/stv338DOIArticle
http://mnras.oxfordjournals.org/content/449/2/1309.abstractPublisherArticle
http://arxiv.org/abs/1502.04501arXivDiscussion Paper
ORCID:
AuthorORCID
Díaz-Santos, T.0000-0003-0699-6083
Valtchanov, I.0000-0001-9930-7886
Additional Information:© 2015 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. Accepted 2015 February 13. Received 2015 February 12; in original form 2014 November 14. First published online March 23, 2015. IGB acknowledges financial support from the Instituto de Astrofísica de Canarias through Fundaciόn La Caixa. This research was partly supported by a Marie Curie Intra European Fellowship within the 7th European Community Framework Programme (PIEF-GA-2012-327934). CRA and IGB acknowledge financial support from the Spanish Ministry of Science and Innovation (MICINN) through project PN AYA2013-47742-C4-2-P. AAH acknowledges funding from the Spanish Ministry of Economy and Competitiveness under grant AYA2012-31447, which is partly funded by the FEDER program. PE acknowledges support from the Spanish Plan Nacional de Astronomía y Astrofísica under grant AYA2012-31277. OGM acknowledges support from grant AYA2012-39168-C03-01. TDS was supported by ALMA-CONICYT grant number 31130005. This work is based on observations made with the Gran Telescopio CANARIAS (GTC), installed in the Spanish Observatorio del Roque de los Muchachos of the Instituto de Astrofísica de Canarias, in the island of La Palma. This research has made use of the NASA/IPAC Extragalactic Database (NED) which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration. Based on observations obtained at the Gemini Observatory, which is operated by the Association of Universities for Research in Astronomy, Inc. under a cooperative agreement with the NSF on behalf of the Gemini partnership: the National Science Foundation (United States), the Science and Technology Facilities Council (United Kingdom), the National Research Council (Canada), CONICYT (Chile), the Australian Research Council Australia), Ministério da Ciência e Tecnologia (Brazil) and Ministerio de Ciencia, Tecnologia e Innovaciόn Productiva (Argentina). Based on observations made with the NASA/ESA HST, obtained from the data archive at the Space Telescope Science Institute. STScI is operated by the Association of Universities for Research in Astronomy, Inc. under NASA contract NAS 5-26555. Based on observation made with the Spitzer Space Telescope, which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under NASA contract 1407. Based on observation made with the Herschel Observatory, which is an ESA space observatory with science instruments provided by European-led Principal Investigator consortia and with important participation from NASA. PACS has been developed by a consortium of institutes led by MPE (Germany) and including UVIE (Austria); KU Leuven, CSL, IMEC (Belgium); CEA, LAM (France); MPIA (Germany); INAF-IFSI/OAA/OAP/OAT, LENS, SISSA (Italy); IAC (Spain). This development has been supported by the funding agencies BMVIT (Austria), ESA-PRODEX (Belgium), CEA/CNES (France), DLR (Germany), ASI/INAF (Italy) and CICYT/MCYT (Spain). SPIRE has been developed by a consortium of institutes led by Cardiff Univ. (UK) and including Univ. Lethbridge (Canada); NAOC (China); CEA, LAM (France); IFSI, Univ. Padua (Italy); IAC (Spain); Stockholm Observatory (Sweden); Imperial College London, RAL, UCL-MSSL, UKATC, Univ. Sussex (UK); and Caltech, JPL, NHSC, Univ. Colorado (USA). This development has been supported by national funding agencies: CSA (Canada); NAOC (China); CEA, CNES, CNRS (France); ASI (Italy); MCINN (Spain); SNSB (Sweden); STFC, UKSA (UK); and NASA (USA). The authors are extremely grateful to the GTC staff for their constant and enthusiastic support, specially to Carlos Álvarez. We finally acknowledge useful comments from the anonymous referee.
Funders:
Funding AgencyGrant Number
Fundaciόn La CaixaUNSPECIFIED
Marie Curie FellowshipPIEF-GA-2012-327934
Ministerio de Economía y Competitividad (MCINN)AYA2013-47742-C4-2-P
Ministerio de Economía y Competitividad (MCINN)AYA2012-31447
Ministerio de Economía y Competitividad (MCINN)AYA2012-31277
Ministerio de Economía y Competitividad (MCINN)AYA2012-39168-C03-01
Comisión Nacional de Investigación Científica y Tecnológica (CONICYT)31130005
NASA/JPL/CaltechUNSPECIFIED
NASANAS 5-26555
NASA1407
Bundesministerium für Verkehr, Innovation und Technologie (BMVIT)UNSPECIFIED
ESA-PRODEX (Belgium)UNSPECIFIED
Commissariat à l’Energie Atomique (CEA)UNSPECIFIED
Deutschen Zentrums für Luft- und Raumfahrt (DLR)UNSPECIFIED
Agenzia Spaziale Italiana (ASI)UNSPECIFIED
Comisión Interministerial de Ciencia y Tecnología (CICYT)UNSPECIFIED
Canadian Space Agency (CSA)UNSPECIFIED
National Astronomical Observatories, Chinese Academy of Sciences (NAOC)UNSPECIFIED
Centre National de la Recherche Scientifique (CNRS)UNSPECIFIED
Swedish National Space Board (SNSB) UNSPECIFIED
Science and Technology Facilities Council (STFC)UNSPECIFIED
NASAUNSPECIFIED
Centre National d'Études Spatiales (CNES)UNSPECIFIED
United Kingdom Space Agency (UKSA)UNSPECIFIED
Istituto Nazionale di Astrofisica (INAF)UNSPECIFIED
Ministerio de Ciencia Y Tecnologia (MCYT)UNSPECIFIED
Subject Keywords:galaxies: active galaxies: groups: individual: Arp 245 galaxies: individual: NGC 2992 galaxies: individual: NGC 2993 galaxies: nuclei infrared: galaxies
Issue or Number:2
Record Number:CaltechAUTHORS:20150626-113237088
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20150626-113237088
Official Citation:I. García-Bernete, C. Ramos Almeida, J. A. Acosta-Pulido, A. Alonso-Herrero, M. Sánchez-Portal, M. Castillo, M. Pereira-Santaella, P. Esquej, O. González-Martín, T. Díaz-Santos, P. Roche, S. Fisher, M. Pović, A. M. Pérez García, I. Valtchanov, C. Packham, and N. A. Levenson The nuclear and extended infrared emission of the Seyfert galaxy NGC 2992 and the interacting system Arp 245 MNRAS (May 11, 2015) Vol. 449 1309-1326 doi:10.1093/mnras/stv338 First published online March 23, 2015
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:58637
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:26 Jun 2015 19:57
Last Modified:03 Oct 2019 08:38

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