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No direct coupling between bending of galaxy disc stellar age and light profiles

dc.contributor.authorMarino, Raffaella Anna
dc.contributor.authorotros, ...
dc.date.accessioned2023-06-18T06:50:08Z
dc.date.available2023-06-18T06:50:08Z
dc.date.issued2016-02-11
dc.description© 2015 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society. Artículo firmado por 21 autores. This Letter is based on data from the CALIFA Survey (http://califa.caha.es), funded by the Spanish Ministry of Science (grant ICTS-2009-10), and the Centro Astronómico Hispano-Alemán. This research has been partly supported by the Spanish Ministry of Science and Innovation under grants AYA2011-24728, AYA2013-48226-C3-1-P and Consolider-Ingenio CSD2010-00064; and by the Junta de Andalucía (FQM-108). TRL thanks the support of the Spanish Ministerio de Educación, Cultura y Deporte (FPU fellowship). We acknowledge the usage of the HyperLeda data base (http://leda.univ-lyon1.fr) and SDSS data (http://www.sdss.org/collaboration/citing-sdss/).
dc.description.abstractWe study the stellar properties of 44 face-on spiral galaxies from the Calar Alto Legacy Integral Field Area survey via full spectrum fitting techniques. We compare the age profiles with the surface brightness distribution in order to highlight differences between profile types (type I, exponential profile; and II, down-bending profile). We observe an upturn ('U-shape') in the age profiles for 17 out of these 44 galaxies with reliable stellar information up to their outer parts. This 'U-shape' is not a unique feature for type II galaxies but can be observed in type I as well. These findings suggest that the mechanisms shaping the surface brightness and stellar population distributions are not directly coupled. This upturn in age is only observable in the light-weighted profiles while it flattens out in the mass-weighted profiles. Given recent results on the outer parts of nearby systems and the results presented in this Letter, one of the most plausible explanations for the age upturn is an early formation of the entire disc(~10 Gyr ago) followed by an inside-out quenching of the star formation.
dc.description.departmentDepto. de Física de la Tierra y Astrofísica
dc.description.facultyFac. de Ciencias Físicas
dc.description.refereedTRUE
dc.description.sponsorshipMinisterio de Economía y Competitividad (MINECO), España
dc.description.sponsorshipCentro Astronómico Hispano-Alemán (CAHA)
dc.description.sponsorshipMinisterio de Ciencia e Innovación (MICINN), España
dc.description.sponsorshipJunta de Andalucía
dc.description.sponsorshipMinisterio de Educación, Cultura y Deporte (MECD), España
dc.description.sponsorshipFormación del Profesorado Universitario (FPU), MECD, España
dc.description.sponsorshipPrograma Consolider Ingenio (MICINN), España
dc.description.statuspub
dc.eprint.idhttps://eprints.ucm.es/id/eprint/35770
dc.identifier.doi10.1093/mnrasl/slv174
dc.identifier.issn0035-8711
dc.identifier.officialurlhttp://dx.doi.org/10.1093/mnrasl/slv174
dc.identifier.relatedurlhttp://arxiv.org/abs/1511.03499
dc.identifier.relatedurlhttps://mnrasl.oxfordjournals.org/
dc.identifier.urihttps://hdl.handle.net/20.500.14352/24352
dc.issue.number1
dc.journal.titleMonthly notices of the Royal Astronomical Society
dc.language.isoeng
dc.page.finalL39
dc.page.initialL35
dc.publisherWiley
dc.relation.projectIDICTS-2009-10
dc.relation.projectIDAYA2011-24728
dc.relation.projectIDAYA2013-48226-C3-1-P
dc.relation.projectIDCSD2010-00064
dc.relation.projectIDFQM-108
dc.rights.accessRightsopen access
dc.subject.cdu52
dc.subject.keywordResolution galactic spectra
dc.subject.keywordEmission-line kinematics
dc.subject.keywordStar-formation history
dc.subject.keywordMaximum a-posteriori
dc.subject.keywordSpiral galaxies
dc.subject.keywordRadial migration
dc.subject.keywordSauron project
dc.subject.keywordData release
dc.subject.keywordPopulations
dc.subject.keywordAbsorption
dc.subject.ucmAstrofísica
dc.subject.ucmAstronomía (Física)
dc.titleNo direct coupling between bending of galaxy disc stellar age and light profiles
dc.typejournal article
dc.volume.number456
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