GALACTICNUCLEUS: A high angular-resolution JHKs imaging survey of the Galactic centre III. Evidence for wavelength-dependence of the extinction curve in the near-infrared
Open Access article, published by EDP Sciences, under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.-- Open Access funding...
| Autores: | , , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2020 |
| País: | España |
| Institución: | Instituto Nacional de Técnica Aeroespacial (INTA) |
| Repositorio: | DIGITAL.INTA Repositorio Digital del Instituto Nacional de Técnica Aeroespacial |
| OAI Identifier: | oai:digital.inta.es:20.500.12666/382 |
| Acceso en línea: | https://www.aanda.org/articles/aa/full_html/2020/09/aa38606-20/aa38606-20.html http://hdl.handle.net/20.500.12666/382 |
| Access Level: | acceso abierto |
| Palabra clave: | Dust, extinction Galaxy: bulge Galaxy: center Galaxy: structure Stars: horizontal-branch |
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GALACTICNUCLEUS: A high angular-resolution JHKs imaging survey of the Galactic centre III. Evidence for wavelength-dependence of the extinction curve in the near-infrared |
| title |
GALACTICNUCLEUS: A high angular-resolution JHKs imaging survey of the Galactic centre III. Evidence for wavelength-dependence of the extinction curve in the near-infrared |
| spellingShingle |
GALACTICNUCLEUS: A high angular-resolution JHKs imaging survey of the Galactic centre III. Evidence for wavelength-dependence of the extinction curve in the near-infrared Nogueras Lara, F. Dust, extinction Galaxy: bulge Galaxy: center Galaxy: structure Stars: horizontal-branch |
| title_short |
GALACTICNUCLEUS: A high angular-resolution JHKs imaging survey of the Galactic centre III. Evidence for wavelength-dependence of the extinction curve in the near-infrared |
| title_full |
GALACTICNUCLEUS: A high angular-resolution JHKs imaging survey of the Galactic centre III. Evidence for wavelength-dependence of the extinction curve in the near-infrared |
| title_fullStr |
GALACTICNUCLEUS: A high angular-resolution JHKs imaging survey of the Galactic centre III. Evidence for wavelength-dependence of the extinction curve in the near-infrared |
| title_full_unstemmed |
GALACTICNUCLEUS: A high angular-resolution JHKs imaging survey of the Galactic centre III. Evidence for wavelength-dependence of the extinction curve in the near-infrared |
| title_sort |
GALACTICNUCLEUS: A high angular-resolution JHKs imaging survey of the Galactic centre III. Evidence for wavelength-dependence of the extinction curve in the near-infrared |
| dc.creator.none.fl_str_mv |
Nogueras Lara, F. Schödel, R. Neumayer, N. Gallego Cano, E. Shahzamanian, B. Gallego Calvente, A. T. Najarro, F. |
| author |
Nogueras Lara, F. |
| author_facet |
Nogueras Lara, F. Schödel, R. Neumayer, N. Gallego Cano, E. Shahzamanian, B. Gallego Calvente, A. T. Najarro, F. |
| author_role |
author |
| author2 |
Schödel, R. Neumayer, N. Gallego Cano, E. Shahzamanian, B. Gallego Calvente, A. T. Najarro, F. |
| author2_role |
author author author author author author |
| dc.contributor.none.fl_str_mv |
Centros de Excelencia Severo Ochoa, INSTITUTO DE ASTROFISICA DE ANDALUCIA (IAA), SEV-2017-0709 Unidad de Excelencia Científica María de Maeztu Centro de Astrobiología del Instituto Nacional de Técnica Aeroespacial y CSIC, MDM-2017-0737 Nogueras Lara, F. [0000-0002-6379-7593] Schödel, R. [0000-0001-5404-797X] Neumayer, N. [0000-0002-6922-2598] Gallego Cano, E. [0000-0002-7452-1496] Shahzamanian, B. [0000-0001-6437-6806] Gallego Calvente, A. T. [0000-0002-6428-8045] Najarro, F. [0000-0002-9124-0039] Agencia Estatal de Investigación (AEI) Deutsche Forschungsgemeinschaft (DFG) European Commission (EC) |
| dc.subject.none.fl_str_mv |
Dust, extinction Galaxy: bulge Galaxy: center Galaxy: structure Stars: horizontal-branch |
| topic |
Dust, extinction Galaxy: bulge Galaxy: center Galaxy: structure Stars: horizontal-branch |
| description |
Open Access article, published by EDP Sciences, under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.-- Open Access funding provided by Max Planck Society. |
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2020 |
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2020 2021 2021 |
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info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 |
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article |
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publishedVersion |
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https://www.aanda.org/articles/aa/full_html/2020/09/aa38606-20/aa38606-20.html http://hdl.handle.net/20.500.12666/382 |
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https://www.aanda.org/articles/aa/full_html/2020/09/aa38606-20/aa38606-20.html http://hdl.handle.net/20.500.12666/382 |
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Inglés |
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Inglés |
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CONTRIBUCION ESPAÑOLA A LAS MISIONES ESPACIALES CRIOGENICAS SPICA Y ATHENA, POST-OPERACIONES DE HERSCHEL Y EXPLOTACION CIENTIFICA MULTIFRECUENCIA info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/ESP2017-86582-C4-1-R LOS GALATICOS DE LA GALAXIA: ESTRELLAS MASIVAS, CUMULOS ESTELARES Y EL CENTRO GALACTICO info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PGC2018-095049-B-C21 info:eu-repo/grantAgreement/EC/FP7/614922 |
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Attribution-NonCommercial-NoDerivatives 4.0 International © F. Nogueras-Lara et al. 2020 https://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess |
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Attribution-NonCommercial-NoDerivatives 4.0 International © F. Nogueras-Lara et al. 2020 https://creativecommons.org/licenses/by-nc-nd/4.0/ |
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openAccess |
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EDP Sciences |
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reponame:DIGITAL.INTA Repositorio Digital del Instituto Nacional de Técnica Aeroespacial instname:Instituto Nacional de Técnica Aeroespacial (INTA) |
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GALACTICNUCLEUS: A high angular-resolution JHKs imaging survey of the Galactic centre III. Evidence for wavelength-dependence of the extinction curve in the near-infraredNogueras Lara, F.Schödel, R.Neumayer, N.Gallego Cano, E.Shahzamanian, B.Gallego Calvente, A. T.Najarro, F.Dust, extinctionGalaxy: bulgeGalaxy: centerGalaxy: structureStars: horizontal-branchOpen Access article, published by EDP Sciences, under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.-- Open Access funding provided by Max Planck Society.Context. The characterisation of the extinction curve in the near-infrared (NIR) is fundamental to analysing the structure and stellar population of the Galactic centre (GC), whose analysis is hampered by the extreme interstellar extinction (AV ~ 30 mag) that varies on arc-second scales. Recent studies indicate that the behaviour of the extinction curve might be more complex than previously assumed, pointing towards a variation of the extinction curve as a function of wavelength. Aims. We aim to analyse the variations of the extinction index, α, with wavelength, line-of-sight, and absolute extinction, extending previous analyses to a larger area of the innermost regions of the Galaxy. Methods. We analysed the whole GALACTICNUCLEUS survey, a high-angular resolution (~0.2″) JHKs NIR survey specially designed to observe the GC in unprecedented detail. It covers a region of ~6000 pc2, comprising fields in the nuclear stellar disc, the inner bulge, and the transition region between them. We applied two independent methods based on red clump (RC) stars to constrain the extinction curve and analysed its variation superseding previous studies. Results. We used more than 165 000 RC stars and increased the size of the regions analysed significantly to confirm that the extinction curve varies with the wavelength. We estimated a difference Δα = 0.21 ± 0.07 between the obtained extinction indices, αJH = 2.44 ± 0.05 and αHKs = 2.23 ± 0.05. We also concluded that there is no significant variation of the extinction curve with wavelength, with the line-of-sight or the absolute extinction. Finally, we computed the ratios between extinctions, AJ/AH = 1.87 ± 0.03 and AH/AKs = 1.84 ± 0.03, consistent with all the regions of the GALACTICNUCLEUS catalogue. © F. Nogueras-Lara et al. 2020.The research leading to these results has received funding from the European Research Council under the European Union’s Seventh Framework Programme (FP7/2007-2013) / ERC grant agreement n◦ [614922]. This work is based on observations made with ESO Telescopes at the La Silla Paranal Observatory under programmes IDs 195.B-0283 and 091.B-0418. We thank the staff of ESO for their great efforts and helpfulness. F.N.-L. and N.N. gratefully acknowledge support by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) – Project-ID 138713538 – SFB 881 (“The Milky Way System”, subproject B8). R.S., A.T.G.-C., E.G.-C., and B.S. acknowledge financial support from the State Agency for Research of the Spanish MCIU through the “Center of Excellence Severo Ochoa” award for the Insti-tuto de Astrofísica de Andalucía (SEV-2017-0709). A.T. G.-C., B.S., and R.S. acknowledge financial support from national project PGC2018-095049-B-C21 (MCIU/AEI/FEDER, UE). F.N. acknowledges financial support through Spanish grant ESP2017-86582-C4-1-R (MINECO/FEDER) and from the Spanish State Research Agency (AEI) through the Unidad de Excelencia “María de Maeztu” -Centro de Astrobiología (CSIC-INTA) project No. MDM-2017-0737.Peer reviewEDP SciencesCentros de Excelencia Severo Ochoa, INSTITUTO DE ASTROFISICA DE ANDALUCIA (IAA), SEV-2017-0709Unidad de Excelencia Científica María de Maeztu Centro de Astrobiología del Instituto Nacional de Técnica Aeroespacial y CSIC, MDM-2017-0737Nogueras Lara, F. [0000-0002-6379-7593]Schödel, R. [0000-0001-5404-797X]Neumayer, N. [0000-0002-6922-2598]Gallego Cano, E. [0000-0002-7452-1496]Shahzamanian, B. [0000-0001-6437-6806]Gallego Calvente, A. T. [0000-0002-6428-8045]Najarro, F. [0000-0002-9124-0039]Agencia Estatal de Investigación (AEI)Deutsche Forschungsgemeinschaft (DFG)European Commission (EC)202120212020info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501application/pdfhttps://www.aanda.org/articles/aa/full_html/2020/09/aa38606-20/aa38606-20.htmlhttp://hdl.handle.net/20.500.12666/382reponame:DIGITAL.INTA Repositorio Digital del Instituto Nacional de Técnica Aeroespacialinstname:Instituto Nacional de Técnica Aeroespacial (INTA)InglésCONTRIBUCION ESPAÑOLA A LAS MISIONES ESPACIALES CRIOGENICAS SPICA Y ATHENA, POST-OPERACIONES DE HERSCHEL Y EXPLOTACION CIENTIFICA MULTIFRECUENCIAinfo:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/ESP2017-86582-C4-1-RLOS GALATICOS DE LA GALAXIA: ESTRELLAS MASIVAS, CUMULOS ESTELARES Y EL CENTRO GALACTICOinfo:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PGC2018-095049-B-C21info:eu-repo/grantAgreement/EC/FP7/614922Attribution-NonCommercial-NoDerivatives 4.0 International© F. Nogueras-Lara et al. 2020https://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:digital.inta.es:20.500.12666/3822026-06-23T12:46:37Z |
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