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Empirical calibration of the near-infrared CaII triplet - III. Fitting functions

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dc.contributor.authorCenarro, A. J.
dc.contributor.authorGorgas García, Francisco Javier
dc.contributor.authorCardiel López, Nicolás
dc.contributor.authorVazdekis, A.
dc.contributor.authorPeletier, R. F.
dc.date.accessioned2023-06-20T19:18:29Z
dc.date.available2023-06-20T19:18:29Z
dc.date.issued2002-02-01
dc.descriptionThis article has been accepted for publication in Monthly notices of the Royal Astronomical Society © 2002 RAS. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved. The authors are indebted to the referee G. Da Costa for useful comments and suggestions. JC acknowledges the Comunidad de Madrid for a Formación de Personal Investigador fellowship. AV acknowledges the support of the PPARC rolling grant ‘Extragalactic Astronomy and Cosmology in Durham 1998-2002’. This research has made use of the NASA’s Astrophysics Data System Article Service. This work was supported by the Spanish Programa Sectorial de Promoción del Conocimiento (PB96-610) and Programa Nacional de Astronomía y Astrofísica (AYA2000-977) and, in part, by a British Council grant within the British/Spanish Joint Research Programme (Acciones Integradas).
dc.description.abstractUsing a near-infrared stellar library of 706 stars with a wide coverage of atmospheric parameters, we study the behaviour of the Call triplet strength in terms of effective temperature, surface gravity and metallicity. Empirical fitting functions for recently defined line-strength indices, namely CaT*, CaT and PaT, are provided. These functions can be easily implemented into stellar population models to provide accurate predictions for integrated Ca II strengths. We also present a thorough study of the various error sources and their relation to the residuals of the derived fitting functions. Finally, the derived functional forms and the behaviour of the predicted Ca II are compared with those of previous works in the field.
dc.description.departmentDepto. de Física de la Tierra y Astrofísica
dc.description.facultyFac. de Ciencias Físicas
dc.description.refereedTRUE
dc.description.sponsorshipPPARC rolling grant Extragalactic Astronomy and Cosmology
dc.description.sponsorshipSpanish Programa Sectorial de Promoción del Conocimiento
dc.description.sponsorshipPrograma Nacional de Astronomía y Astrofísica
dc.description.sponsorshipBritish Council
dc.description.sponsorshipBritish/Spanish Joint Research Programme (Acciones Integradas)
dc.description.statuspub
dc.eprint.idhttps://eprints.ucm.es/id/eprint/29849
dc.identifier.doi10.1046/j.1365-8711.2002.05029.x
dc.identifier.issn0035-8711
dc.identifier.officialurlhttp://dx.doi.org/10.1046/j.1365-8711.2002.05029.x
dc.identifier.relatedurlhttp://mnras.oxfordjournals.org/
dc.identifier.urihttps://hdl.handle.net/20.500.14352/59506
dc.issue.number4
dc.journal.titleMonthly notices of the Royal Astronomical Society
dc.language.isoeng
dc.page.final876
dc.page.initial863
dc.publisherWiley
dc.relation.projectIDPB96-610
dc.relation.projectIDAYA2000-977
dc.rights.accessRightsopen access
dc.subject.cdu52
dc.subject.keywordStellar population synthesis
dc.subject.keywordAngstrom break
dc.subject.keywordCool stars
dc.subject.keywordLines
dc.subject.keywordMetallicities
dc.subject.keywordLuminosity
dc.subject.keywordEvolution
dc.subject.keywordClusters
dc.subject.keywordGalaxies
dc.subject.keywordFeatures
dc.subject.ucmAstrofísica
dc.subject.ucmAstronomía (Física)
dc.titleEmpirical calibration of the near-infrared CaII triplet - III. Fitting functions
dc.typejournal article
dc.volume.number329
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