A sinfoni view of the nuclear activity and circumnuclear star formation in NGC 4303 – II. Spatially resolved stellar populations
We present a spatially resolved stellar population study of the inner ∼200 pc radius of NGC 4303 based on near-infrared integral field spectroscopy with SINFONI/VLT at a spatial resolution of 40–80 pc and using the STARLIGHT code. We found that the distribution of the stellar populations presents a...
| Autores: | , , , , , , , , , , , , , |
|---|---|
| Tipo de recurso: | artículo |
| Fecha de publicación: | 2019 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/199124 |
| Acceso en línea: | http://hdl.handle.net/10261/199124 |
| Access Level: | acceso abierto |
| Palabra clave: | Galaxies: active Galaxies: stellar content Infrared: stars |
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oai:digital.csic.es:10261/199124 |
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A sinfoni view of the nuclear activity and circumnuclear star formation in NGC 4303 – II. Spatially resolved stellar populationsDametto, N.Z.Riffel, RogérioColina, LuisRiffel, Rogemar A.Piqueras López, JavierDavies, R. I.Burtscher, LeonardMenezes, R. B.Arribas-Mocoroa, SantiagoPastoriza, M.Labiano, ÁlvaroStorchi Bergmann, T.Dahmer-Hahn, L.G.Sales, Dinalva A.Galaxies: activeGalaxies: stellar contentInfrared: starsWe present a spatially resolved stellar population study of the inner ∼200 pc radius of NGC 4303 based on near-infrared integral field spectroscopy with SINFONI/VLT at a spatial resolution of 40–80 pc and using the STARLIGHT code. We found that the distribution of the stellar populations presents a spatial variation, suggesting an age stratification. Three main structures stand out. Two nuclear blobs, one composed by young stars (t ≤ 50 Myr) and one with intermediate-age stars (50 Myr < t ≤ 2 Gyr), both shifted from the centre. The third one is an internal intermediate-age spiral arm-like structure, surrounding the blob of young stars. Our results indicate that star formation has occurred through multiple bursts in this source. Furthermore, the youngest stellar populations (t 2 Gyr) are distributed along a circumnuclear star-forming ring with r ∼ 250 pc. The ring displays star formation rates (SFRs) in the range of 0.002–0.14 Myr, favouring the ‘pearls-on-a-string’ scenario. The old underlying bulge stellar population component (t > 2 Gyr) is distributed outside the two blob structures. For the nuclear region (inner ∼60 pc radius) we derived an SFR of 0.43 M yr and found no signatures of non-thermal featureless continuum and hot dust emission, supporting the scenario in which an LLAGN/LINER-like source is hidden in the centre of NGC 4303. Thus, our results reveal a rather complex star formation history in NGC 4303, with different stellar population components coexisting with a low efficiency accreting black hole in its centre.The Brazilian authors acknowledge support from FAPERGS (Fundação de Amparo à Pesquisa do Estado do Rio Grande do Sul) and CNPq (Conselho Nacional de Desenvolvimento Cientıfico e Tecnologico). L.C. acknowledges support from CNPq ´special visitor fellowship PVE 313945/2013-6 under the Brazilian program Science without Borders. L.C. and S.A. are supported by grants AYA2012-32295, AYA2012- 39408, ESP2015-68964-P, and ESP2017-83197-P, and J.P. is supported by grant AYA2017-85170-R, all from the Ministerio de Econom´ıa y Competitividad of Spain. The STARLIGHT project is supported by the Brazilian agencies CNPq, CAPES and FAPESP (Fundação de Amparo a pesquisa do Estado de Sao Paulo) and by the France-Brazil CAPES/Cofecub programOxford University PressFundação de Amparo à Pesquisa do Estado do Rio Grande do SulConselho Nacional de Desenvolvimento Científico e Tecnológico (Brasil)Ministerio de Economía y Competitividad (España)Fundação de Amparo à Pesquisa do Estado de São PauloCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (Brasil)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2020202020192020info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/199124reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/ESP2015-68964-Pinfo:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/ESP2017-83197-Phttp://dx.doi.org/10.1093/mnras/sty2996Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/1991242026-05-22T06:33:51Z |
| dc.title.none.fl_str_mv |
A sinfoni view of the nuclear activity and circumnuclear star formation in NGC 4303 – II. Spatially resolved stellar populations |
| title |
A sinfoni view of the nuclear activity and circumnuclear star formation in NGC 4303 – II. Spatially resolved stellar populations |
| spellingShingle |
A sinfoni view of the nuclear activity and circumnuclear star formation in NGC 4303 – II. Spatially resolved stellar populations Dametto, N.Z. Galaxies: active Galaxies: stellar content Infrared: stars |
| title_short |
A sinfoni view of the nuclear activity and circumnuclear star formation in NGC 4303 – II. Spatially resolved stellar populations |
| title_full |
A sinfoni view of the nuclear activity and circumnuclear star formation in NGC 4303 – II. Spatially resolved stellar populations |
| title_fullStr |
A sinfoni view of the nuclear activity and circumnuclear star formation in NGC 4303 – II. Spatially resolved stellar populations |
| title_full_unstemmed |
A sinfoni view of the nuclear activity and circumnuclear star formation in NGC 4303 – II. Spatially resolved stellar populations |
| title_sort |
A sinfoni view of the nuclear activity and circumnuclear star formation in NGC 4303 – II. Spatially resolved stellar populations |
| dc.creator.none.fl_str_mv |
Dametto, N.Z. Riffel, Rogério Colina, Luis Riffel, Rogemar A. Piqueras López, Javier Davies, R. I. Burtscher, Leonard Menezes, R. B. Arribas-Mocoroa, Santiago Pastoriza, M. Labiano, Álvaro Storchi Bergmann, T. Dahmer-Hahn, L.G. Sales, Dinalva A. |
| author |
Dametto, N.Z. |
| author_facet |
Dametto, N.Z. Riffel, Rogério Colina, Luis Riffel, Rogemar A. Piqueras López, Javier Davies, R. I. Burtscher, Leonard Menezes, R. B. Arribas-Mocoroa, Santiago Pastoriza, M. Labiano, Álvaro Storchi Bergmann, T. Dahmer-Hahn, L.G. Sales, Dinalva A. |
| author_role |
author |
| author2 |
Riffel, Rogério Colina, Luis Riffel, Rogemar A. Piqueras López, Javier Davies, R. I. Burtscher, Leonard Menezes, R. B. Arribas-Mocoroa, Santiago Pastoriza, M. Labiano, Álvaro Storchi Bergmann, T. Dahmer-Hahn, L.G. Sales, Dinalva A. |
| author2_role |
author author author author author author author author author author author author author |
| dc.contributor.none.fl_str_mv |
Fundação de Amparo à Pesquisa do Estado do Rio Grande do Sul Conselho Nacional de Desenvolvimento Científico e Tecnológico (Brasil) Ministerio de Economía y Competitividad (España) Fundação de Amparo à Pesquisa do Estado de São Paulo Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (Brasil) Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72] |
| dc.subject.none.fl_str_mv |
Galaxies: active Galaxies: stellar content Infrared: stars |
| topic |
Galaxies: active Galaxies: stellar content Infrared: stars |
| description |
We present a spatially resolved stellar population study of the inner ∼200 pc radius of NGC 4303 based on near-infrared integral field spectroscopy with SINFONI/VLT at a spatial resolution of 40–80 pc and using the STARLIGHT code. We found that the distribution of the stellar populations presents a spatial variation, suggesting an age stratification. Three main structures stand out. Two nuclear blobs, one composed by young stars (t ≤ 50 Myr) and one with intermediate-age stars (50 Myr < t ≤ 2 Gyr), both shifted from the centre. The third one is an internal intermediate-age spiral arm-like structure, surrounding the blob of young stars. Our results indicate that star formation has occurred through multiple bursts in this source. Furthermore, the youngest stellar populations (t 2 Gyr) are distributed along a circumnuclear star-forming ring with r ∼ 250 pc. The ring displays star formation rates (SFRs) in the range of 0.002–0.14 Myr, favouring the ‘pearls-on-a-string’ scenario. The old underlying bulge stellar population component (t > 2 Gyr) is distributed outside the two blob structures. For the nuclear region (inner ∼60 pc radius) we derived an SFR of 0.43 M yr and found no signatures of non-thermal featureless continuum and hot dust emission, supporting the scenario in which an LLAGN/LINER-like source is hidden in the centre of NGC 4303. Thus, our results reveal a rather complex star formation history in NGC 4303, with different stellar population components coexisting with a low efficiency accreting black hole in its centre. |
| publishDate |
2019 |
| dc.date.none.fl_str_mv |
2019 2020 2020 2020 |
| dc.type.none.fl_str_mv |
info:eu-repo/semantics/article http://purl.org/coar/resource_type/c_6501 |
| format |
article |
| dc.identifier.none.fl_str_mv |
http://hdl.handle.net/10261/199124 |
| url |
http://hdl.handle.net/10261/199124 |
| dc.language.none.fl_str_mv |
Inglés |
| language_invalid_str_mv |
Inglés |
| dc.relation.none.fl_str_mv |
#PLACEHOLDER_PARENT_METADATA_VALUE# #PLACEHOLDER_PARENT_METADATA_VALUE# info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/ESP2015-68964-P info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/ESP2017-83197-P http://dx.doi.org/10.1093/mnras/sty2996 Sí |
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info:eu-repo/semantics/openAccess |
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openAccess |
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Oxford University Press |
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Oxford University Press |
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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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