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dc.rights.licenseCopyright © 2018, Oxford University Press-
dc.contributor.authorSánchez Gil, M. C.-
dc.contributor.authorAlfaro, Emilio J.-
dc.contributor.authorCerviño, M.-
dc.contributor.authorPérez, E.-
dc.contributor.authorBland Hawthorn, J.-
dc.contributor.authorDeath Jones, D.-
dc.contributor.otherUnidad de Excelencia Científica María de Maeztu Centro de Astrobiología del Instituto Nacional de Técnica Aeroespacial y CSIC, MDM-2017-0737-
dc.date.accessioned2021-04-09T10:13:11Z-
dc.date.available2021-04-09T10:13:11Z-
dc.date.issued2019-02-15-
dc.identifier.citationMonthly Notices of the Royal Astronomical Society 483(2): 2641–2670(2019)es
dc.identifier.issn0035-8711-
dc.identifier.otherhttps://academic.oup.com/mnras/article-abstract/483/2/2641/5185101-
dc.identifier.urihttp://hdl.handle.net/20.500.12666/180-
dc.descriptionThis article is published and distributed under the terms of the Oxford University Press, Standard Journals Publication Model (https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model)es
dc.description.abstractOne of the fundamental goals of modern astrophysics is to estimate the physical parameters of galaxies. We present a hierarchical Bayesian model to compute age maps from images in the H α line (taken with Taurus tunable filter, TTF), ultraviolet band (GALEX far UV, FUV), and infrared bands (Spitzer 24, 70, and 160 μm). We present the burst ages for young stellar populations in a sample of nearby and nearly face-on galaxies. The H α to FUV flux ratio is a good relative indicator of the very recent star formation history (SFH). As a nascent star-forming region evolves, the H α line emission declines earlier than the UV continuum, leading to a decrease in the H α/FUV ratio. Using star-forming galaxy models, sampled with a probabilistic formalism, and allowing for a variable fraction of ionizing photons in the clusters, we obtain the corresponding theoretical ratio H α/FUV to compare with our observed flux ratios, and thus to estimate the ages of the observed regions. We take into account the mean uncertainties and the interrelationships between parameters when computing H α/FUV. We propose a Bayesian hierarchical model where a joint probability distribution is defined to determine the parameters (age, metallicity, IMF) from the observed data (the observed flux ratios H α/FUV). The joint distribution of the parameters is described through independent and identically distributed (i.i.d.) random variables generated through MCMC (Markov Chain Monte Carlo) techniques.es
dc.description.sponsorshipWe acknowledge financial support from the Spanish Ministry of Economy and Competitiveness through grants AYA2017-88007-C3-1-P, AYA2016-75931-C2-1-P, AYA2015-68012-C2-1, AYA2014-57490-P, AYA2014-58861-C3-1-P, AYA2016-77846-P, AYA2013-40611-P, and from the Consejeria de Educacion y Ciencia (Junta de Andalucia) through TIC-101, TIC-4075 and TIC-114; With funding from the Spanish government through the "María de Maeztu Unit of Excellence" accreditation (MDM-2017-0737).es
dc.language.isoenges
dc.publisherOxford Academics: Oxford University Presses
dc.relationinfo:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/AYA2017-88007-C3-1-P/ES/EVOLUCION DE GALAXIAS/-
dc.relationinfo:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/AYA2016-75931-C2-1-P/ES/J-PAS: ESTRUCTURA A GRAN ESCALA, COSMOLOGIA CON OSCILACIONES ACUSTICAS BARIONICAS Y COSMOLOGIA DE PROXIMIDAD/-
dc.relationinfo:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/AYA2016-77846-P/ES/EVOLUCION DE GALAXIAS/-
dc.relationinfo:eu-repo/grantAgreement/MINECO//AYA2013-40611-P/ES/CARTOGRAFIANDO EL CIELO: SONDEOS EN EL OPTICO E INFRARROJO DE LA VIA LACTEA/-
dc.relationinfo:eu-repo/grantAgreement/MINECO//AYA2015-68012-C2-1-P-
dc.relationinfo:eu-repo/grantAgreement/MINECO//AYA2014-57490-P/ES/RESOLVIENDO LAS GALAXIAS EN ESPACIO Y TIEMPO: CLAVES PARA LA FORMACION Y EVOLUCION DE LAS GALAXIAS/-
dc.relationinfo:eu-repo/grantAgreement/MINECO//AYA2014-58861-C3-1-P/ES/EVOLUCION DE GALAXIAS/-
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectMethods: observationales
dc.subjectMethods: statisticales
dc.subjectGalaxies: spirales
dc.subjectGalaxies: starburstes
dc.subjectGalaxies: star formationes
dc.subjectGalaxies: structurees
dc.titleHierarchical Bayesian approach for estimating physical properties in nearby galaxies: Age Maps (Paper II)es
dc.typeinfo:eu-repo/semantics/articlees
dc.contributor.orcid0000-0002-2234-7035-
dc.contributor.orcid0000-0001-8009-231X-
dc.contributor.orcid0000-0001-9737-4559-
dc.identifier.doi10.1093/mnras/sty3106-
dc.identifier.e-issn1365-2966-
dc.contributor.funderMinisterio de Economía y Competitividad (MINECO)-
dc.contributor.funderJunta de Andalucia-
dc.contributor.funderAgencia Estatal de Investigación (AEI)-
dc.description.peerreviewedPeer reviewes
dc.type.hasVersioninfo:eu-repo/semantics/publishedVersion-
dc.rights.accessRightsinfo:eu-repo/semantics/openAccess-
dc.type.coarhttp://purl.org/coar/resource_type/c_6501-
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