Resolving the nuclear dust distribution of the Seyfert 2 galaxy NGC 3081
We report far-infrared (FIR) imaging of the Seyfert 2 galaxy NGC 3081 in the range 70–500 μm, obtained with an unprecedented angular resolution, using the Herschel Space Observatory instruments PACS and SPIRE. The 11 kpc (∼70 arcsec) diameter star-forming ring of the galaxy appears resolved up to 25...
| Autores: | , , , , , , , , , , , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2011 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/46521 |
| Acceso en línea: | http://hdl.handle.net/10261/46521 |
| Access Level: | acceso abierto |
| Palabra clave: | Galaxies: active Galaxies: nuclei Galaxies: Seyfert Infrared: galaxies Galaxies: individual: NGC 3081 |
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Resolving the nuclear dust distribution of the Seyfert 2 galaxy NGC 3081Ramos-Almeida, CristinaSánchez-Portal, MiguelPérez-García, Ana M.Acosta-Pulido, J. A.Castillo, ManuelAsensio Ramos, A.González-Serrano, José IgnacioAlonso-Herrero, A.Rodríguez-Espinosa, J. M.Hatziminaoglou, EvanthiaCoia, D.Valtchanov, IvánPović, MirjanaEsquej, PilarPackham, ChristopherAltieri, B.Galaxies: activeGalaxies: nucleiGalaxies: SeyfertInfrared: galaxiesGalaxies: individual: NGC 3081We report far-infrared (FIR) imaging of the Seyfert 2 galaxy NGC 3081 in the range 70–500 μm, obtained with an unprecedented angular resolution, using the Herschel Space Observatory instruments PACS and SPIRE. The 11 kpc (∼70 arcsec) diameter star-forming ring of the galaxy appears resolved up to 250 μm. We extracted IR (1.6–500 μm) nuclear fluxes, that is active nucleus-dominated fluxes, and fitted them with clumpy torus models, which successfully reproduce the FIR emission with small torus sizes. Adding the FIR data to the near- and mid-IR spectral energy distribution (SED) results in a torus radial extent of Ro= 4+2− 1 pc, as well as in a flat radial distribution of the clouds (i.e. the q parameter). At wavelengths beyond 200 μm, cold dust emission at T= 28 ± 1 K from the circumnuclear star-forming ring of 2.3 kpc (∼15 arcsec) in diameter starts making a contribution to the nuclear emission. The dust in the outer parts of the galaxy is heated by the interstellar radiation field (19 ± 3 K).CRA acknowledges financial support from STFC (ST/G001758/1) and from the Spanish Ministry of Science and Innovation (MICINN) through project Consolider-Ingenio 2010 Programme grant CSD2006-00070: First Science with the GTC. AMPG and JIGS acknowledge the Spanish Ministry of Science and Innovation (MICINN) through project AYA2008-06311-C02-01/02. AAR acknowledges the Spanish Ministry of Science and Innovation through projects AYA2010-18029 (Solar Magnetism and Astrophysical Spectropolarimetry). AAH and PE acknowledges support from the Spanish Plan Nacional de Astronomía y Astrofísica under grant AYA2009-05705-E. MP acknowledges Junta de Andalucía and Spanish Ministry of Science and Innovation through projects PO8-TIC-03531 and AYA2010-15169. 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 University (UK) and including University of Lethbridge (Canada); NAOC (China); CEA, LAM (France); IFSI, University of Padua (Italy); IAC (Spain); Stockholm Observatory (Sweden); Imperial College London, RAL, UCL-MSSL, UKATC, University of Sussex (UK); and Caltech, JPL, NHSC, University of 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 (UK) andNASA(USA).Peer reviewedWiley-BlackwellMinisterio de Ciencia e Innovación (España)Junta de Andalucía201220122011info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/46521reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1111/j.1745-3933.2011.01117.xinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/465212026-05-22T06:33:51Z |
| dc.title.none.fl_str_mv |
Resolving the nuclear dust distribution of the Seyfert 2 galaxy NGC 3081 |
| title |
Resolving the nuclear dust distribution of the Seyfert 2 galaxy NGC 3081 |
| spellingShingle |
Resolving the nuclear dust distribution of the Seyfert 2 galaxy NGC 3081 Ramos-Almeida, Cristina Galaxies: active Galaxies: nuclei Galaxies: Seyfert Infrared: galaxies Galaxies: individual: NGC 3081 |
| title_short |
Resolving the nuclear dust distribution of the Seyfert 2 galaxy NGC 3081 |
| title_full |
Resolving the nuclear dust distribution of the Seyfert 2 galaxy NGC 3081 |
| title_fullStr |
Resolving the nuclear dust distribution of the Seyfert 2 galaxy NGC 3081 |
| title_full_unstemmed |
Resolving the nuclear dust distribution of the Seyfert 2 galaxy NGC 3081 |
| title_sort |
Resolving the nuclear dust distribution of the Seyfert 2 galaxy NGC 3081 |
| dc.creator.none.fl_str_mv |
Ramos-Almeida, Cristina Sánchez-Portal, Miguel Pérez-García, Ana M. Acosta-Pulido, J. A. Castillo, Manuel Asensio Ramos, A. González-Serrano, José Ignacio Alonso-Herrero, A. Rodríguez-Espinosa, J. M. Hatziminaoglou, Evanthia Coia, D. Valtchanov, Iván Pović, Mirjana Esquej, Pilar Packham, Christopher Altieri, B. |
| author |
Ramos-Almeida, Cristina |
| author_facet |
Ramos-Almeida, Cristina Sánchez-Portal, Miguel Pérez-García, Ana M. Acosta-Pulido, J. A. Castillo, Manuel Asensio Ramos, A. González-Serrano, José Ignacio Alonso-Herrero, A. Rodríguez-Espinosa, J. M. Hatziminaoglou, Evanthia Coia, D. Valtchanov, Iván Pović, Mirjana Esquej, Pilar Packham, Christopher Altieri, B. |
| author_role |
author |
| author2 |
Sánchez-Portal, Miguel Pérez-García, Ana M. Acosta-Pulido, J. A. Castillo, Manuel Asensio Ramos, A. González-Serrano, José Ignacio Alonso-Herrero, A. Rodríguez-Espinosa, J. M. Hatziminaoglou, Evanthia Coia, D. Valtchanov, Iván Pović, Mirjana Esquej, Pilar Packham, Christopher Altieri, B. |
| author2_role |
author author author author author author author author author author author author author author author |
| dc.contributor.none.fl_str_mv |
Ministerio de Ciencia e Innovación (España) Junta de Andalucía |
| dc.subject.none.fl_str_mv |
Galaxies: active Galaxies: nuclei Galaxies: Seyfert Infrared: galaxies Galaxies: individual: NGC 3081 |
| topic |
Galaxies: active Galaxies: nuclei Galaxies: Seyfert Infrared: galaxies Galaxies: individual: NGC 3081 |
| description |
We report far-infrared (FIR) imaging of the Seyfert 2 galaxy NGC 3081 in the range 70–500 μm, obtained with an unprecedented angular resolution, using the Herschel Space Observatory instruments PACS and SPIRE. The 11 kpc (∼70 arcsec) diameter star-forming ring of the galaxy appears resolved up to 250 μm. We extracted IR (1.6–500 μm) nuclear fluxes, that is active nucleus-dominated fluxes, and fitted them with clumpy torus models, which successfully reproduce the FIR emission with small torus sizes. Adding the FIR data to the near- and mid-IR spectral energy distribution (SED) results in a torus radial extent of Ro= 4+2− 1 pc, as well as in a flat radial distribution of the clouds (i.e. the q parameter). At wavelengths beyond 200 μm, cold dust emission at T= 28 ± 1 K from the circumnuclear star-forming ring of 2.3 kpc (∼15 arcsec) in diameter starts making a contribution to the nuclear emission. The dust in the outer parts of the galaxy is heated by the interstellar radiation field (19 ± 3 K). |
| publishDate |
2011 |
| dc.date.none.fl_str_mv |
2011 2012 2012 |
| dc.type.none.fl_str_mv |
info:eu-repo/semantics/article http://purl.org/coar/resource_type/c_6501 Publisher's version info:eu-repo/semantics/publishedVersion |
| format |
article |
| status_str |
publishedVersion |
| dc.identifier.none.fl_str_mv |
http://hdl.handle.net/10261/46521 |
| url |
http://hdl.handle.net/10261/46521 |
| dc.language.none.fl_str_mv |
Inglés |
| language_invalid_str_mv |
Inglés |
| dc.relation.none.fl_str_mv |
http://dx.doi.org/10.1111/j.1745-3933.2011.01117.x |
| dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess |
| eu_rights_str_mv |
openAccess |
| dc.publisher.none.fl_str_mv |
Wiley-Blackwell |
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Wiley-Blackwell |
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reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC instname:Consejo Superior de Investigaciones Científicas (CSIC) |
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Consejo Superior de Investigaciones Científicas (CSIC) |
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DIGITAL.CSIC. Repositorio Institucional del CSIC |
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DIGITAL.CSIC. Repositorio Institucional del CSIC |
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