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Gaia FGK benchmark stars: abundances of α and iron-peak elements

dc.contributor.authorJOFRÉ, P.,
dc.contributor.authorHEITER, U.,
hal.structure.identifierM2A 2015
dc.contributor.authorSOUBIRAN, C.
hal.structure.identifierObservatoire Astronomique de l'Université de Genève [ObsGE]
hal.structure.identifierM2A 2015
dc.contributor.authorBLANCO-CUARESMA, S.
dc.contributor.authorMASSERON, T.,
dc.contributor.authorNORDLANDER, T.,
hal.structure.identifierM2A 2015
dc.contributor.authorCHEMIN, L.
dc.contributor.authorWORLEY, C. C.,
hal.structure.identifierInstitut d'Astronomie et d'Astrophysique
dc.contributor.authorVAN ECK, S.,
dc.contributor.authorHOURIHANE, A.,
dc.contributor.authorGILMORE, G.,
dc.contributor.authorADIBEKYAN, V.,
dc.contributor.authorBERGEMANN, M.,
dc.contributor.authorCANTAT-GAUDIN, T.,
dc.contributor.authorDELGADO-MENA, E.,
dc.contributor.authorGONZÁLEZ HERNÁNDEZ, J. I.,
dc.contributor.authorGUIGLION, G.,
dc.contributor.authorLARDO, C.,
dc.contributor.authorDE LAVERNY, P.
dc.contributor.authorLIND, K.,
dc.contributor.authorMAGRINI, L.,
dc.contributor.authorMIKOLAITIS, S.,
dc.contributor.authorMONTES, D.,
dc.contributor.authorPANCINO, E.,
dc.contributor.authorRECIO-BLANCO, A.,
dc.contributor.authorSORDO, R.,
dc.contributor.authorSOUSA, S.,
dc.contributor.authorTABERNERO, H. M.,
dc.contributor.authorVALLENARI, A.,
dc.date.issued2015-10
dc.identifier.issn0004-6361
dc.description.abstractEnContext. In the current era of large spectroscopic surveys of the Milky Way, reference stars for calibrating astrophysical parameters and chemical abundances are of paramount importance. Aims: We determine elemental abundances of Mg, Si, Ca, Sc, Ti, V, Cr, Mn, Co, and Ni for our predefined set of Gaia FGK benchmark stars. Methods: By analysing high-resolution spectra with a high signal-to-noise ratio taken from several archive datasets, we combined results of eight different methods to determine abundances on a line-by-line basis. We performed a detailed homogeneous analysis of the systematic uncertainties, such as differential versus absolute abundance analysis. We also assessed errors that are due to non-local thermal equilibrium and the stellar parameters in our final abundances. Results: Our results are provided by listing final abundances and the different sources of uncertainties, as well as line-by-line and method-by-method abundances. Conclusions: The atmospheric parameters of the Gaia FGK benchmark stars are already being widely used for calibration of several pipelines that are applied to different surveys. With the added reference abundances of ten elements, this set is very suitable for calibrating the chemical abundances obtained by these pipelines.Based on NARVAL and HARPS data obtained within the Gaia DPAC (Data Processing and Analysis Consortium) and coordinated by the GBOG (Ground-Based Observations for Gaia) working group and on data retrieved from the ESO-ADP database.Tables C.1-C.35 are only available at the CDS via anonymous ftp to http://cdsarc.u-strasbg.fr (ftp://130.79.128.5) or via http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/582/A81
dc.language.isoen
dc.publisherEDP Sciences
dc.subject.enmethods: data analysis
dc.subject.enstars: atmospheres
dc.subject.enGalaxy: abundances
dc.title.enGaia FGK benchmark stars: abundances of α and iron-peak elements
dc.typeArticle de revue
dc.identifier.doi10.1051/0004-6361/201526604
dc.subject.halPlanète et Univers [physics]/Astrophysique [astro-ph]/Instrumentation et méthodes pour l'astrophysique [astro-ph.IM]
dc.identifier.arxiv1507.00027
bordeaux.journalAstronomy and Astrophysics - A&A
bordeaux.pageA81
bordeaux.volume582
bordeaux.peerReviewedoui
hal.identifierhal-01229436
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01229436v1
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