GALACTICNUCLEUS: A high-angular-resolution JHK simaging survey of the Galactic centre: IV. Extinction maps and de-reddened photometry

Open Access article, published by EDP Sciences, under the terms of the Creative Commons Attribution License (https://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 p...

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Detalles Bibliográficos
Autores: Nogueras-Lara, Francisco, Schödel, Rainer, Neumayer, N.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2022
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/259964
Acceso en línea:http://hdl.handle.net/10261/259964
Access Level:acceso abierto
Palabra clave:Galaxy: center
Galaxy: bulge
Galaxy: structure
Stars: horizontal-branch
Dust
Extinction
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dc.title.none.fl_str_mv GALACTICNUCLEUS: A high-angular-resolution JHK simaging survey of the Galactic centre: IV. Extinction maps and de-reddened photometry
title GALACTICNUCLEUS: A high-angular-resolution JHK simaging survey of the Galactic centre: IV. Extinction maps and de-reddened photometry
spellingShingle GALACTICNUCLEUS: A high-angular-resolution JHK simaging survey of the Galactic centre: IV. Extinction maps and de-reddened photometry
Nogueras-Lara, Francisco
Galaxy: center
Galaxy: bulge
Galaxy: structure
Stars: horizontal-branch
Dust
Extinction
title_short GALACTICNUCLEUS: A high-angular-resolution JHK simaging survey of the Galactic centre: IV. Extinction maps and de-reddened photometry
title_full GALACTICNUCLEUS: A high-angular-resolution JHK simaging survey of the Galactic centre: IV. Extinction maps and de-reddened photometry
title_fullStr GALACTICNUCLEUS: A high-angular-resolution JHK simaging survey of the Galactic centre: IV. Extinction maps and de-reddened photometry
title_full_unstemmed GALACTICNUCLEUS: A high-angular-resolution JHK simaging survey of the Galactic centre: IV. Extinction maps and de-reddened photometry
title_sort GALACTICNUCLEUS: A high-angular-resolution JHK simaging survey of the Galactic centre: IV. Extinction maps and de-reddened photometry
dc.creator.none.fl_str_mv Nogueras-Lara, Francisco
Schödel, Rainer
Neumayer, N.
author Nogueras-Lara, Francisco
author_facet Nogueras-Lara, Francisco
Schödel, Rainer
Neumayer, N.
author_role author
author2 Schödel, Rainer
Neumayer, N.
author2_role author
author
dc.contributor.none.fl_str_mv Federal Ministry of Education and Research (Germany)
German Research Foundation
European Commission
Ministerio de Economía y Competitividad (España)
Ministerio de Ciencia, Innovación y Universidades (España)
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Galaxy: center
Galaxy: bulge
Galaxy: structure
Stars: horizontal-branch
Dust
Extinction
topic Galaxy: center
Galaxy: bulge
Galaxy: structure
Stars: horizontal-branch
Dust
Extinction
description Open Access article, published by EDP Sciences, under the terms of the Creative Commons Attribution License (https://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.
publishDate 2022
dc.date.none.fl_str_mv 2022
2022
2022
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/10261/259964
url http://hdl.handle.net/10261/259964
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
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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/MICINN//SEV-2017-0709
http://dx.doi.org/10.1051/0004-6361/202140996
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv EDP Sciences
publisher.none.fl_str_mv EDP Sciences
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
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spelling GALACTICNUCLEUS: A high-angular-resolution JHK simaging survey of the Galactic centre: IV. Extinction maps and de-reddened photometryNogueras-Lara, FranciscoSchödel, RainerNeumayer, N.Galaxy: centerGalaxy: bulgeGalaxy: structureStars: horizontal-branchDustExtinctionOpen Access article, published by EDP Sciences, under the terms of the Creative Commons Attribution License (https://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 extreme extinction (AV ~ 30 mag) and its variation on arc-second scales towards the Galactic centre hamper the study of its stars. Analysis of them is restricted to the near infrared (NIR) regime, where the extinction curve can be approximated by a broken power law for the JHKs bands. Therefore, it is fundamental to correct for extinction at these wavelengths in order to analyse the structure and stellar population of the central regions of our Galaxy. Aims. We aim to, (1) discuss different strategies to de-redden the photometry and check the usefulness of extinction maps to deal with variable stars; (2) build extinction maps for the NIR bands JHKs and make them publicly available; (3) create a de-reddened catalogue of the GALACTICNUCLEUS (GNS) survey, identifying foreground stars; and (4) perform a preliminary analysis of the de-reddened Ks luminosity functions (KLFs). Methods. We used photometry from the GNS survey to create extinction maps for the whole catalogue. We took red clump (RC) and red giant stars of similar brightnesses as a reference to build the maps and we de-reddened the GNS photometry. We also discussed the limitations of the process and analysed non-linear effects of the de-reddening. Results. We obtained high resolution (~3″) extinction maps with low statistical and systematics uncertainties (5%) and computed average extinctions for each of the regions covered by the GNS. We checked that our maps effectively correct the differential extinction reducing the spread of the RC features by a factor of ~2. We assessed the validity of the broken power law approach computing two equivalent extinction maps AH using either JH and HKs photometry for the same reference stars and obtained compatible average extinctions within the uncertainties. Finally, we analysed de-reddened KLFs for different lines of sight and found that the regions belonging to the NSD contain a homogeneous stellar population that is significantly different from that in the innermost bulge regions. © F. Nogueras-Lara et al. 2021.This work is based on observations made with ESO Telescopes at the La Silla Paranal Observatory under program ID 195.B-0283. We thank the staff of ESO for their great efforts and helpfulness. F.N.-L. acknowledges the sponsorship provided by the Federal Ministry for Education and Research of Germany through the Alexander von Humboldt Foundation. 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. acknowledges financial support from the State Agency for Research of the Spanish MCIU through the "Center of Excellence Severo Ochoa" award for the Instituto de Astrofisica de Andalucia (SEV-2017-0709). R.S. acknowledges financial support from national project PGC2018-095049-B-C21 (MCIU/AEI/FEDER, UE).Peer reviewedEDP SciencesFederal Ministry of Education and Research (Germany)German Research FoundationEuropean CommissionMinisterio de Economía y Competitividad (España)Ministerio de Ciencia, Innovación y Universidades (España)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202220222022info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/259964reponame: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/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PGC2018-095049-B-C21info:eu-repo/grantAgreement/MICINN//SEV-2017-0709http://dx.doi.org/10.1051/0004-6361/202140996Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/2599642026-05-22T06:33:51Z
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