Spectroscopic and asteroseismic analysis of the secondary clump red giant HD 226808

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dc.contributor.authorCosta, Jefferson Soares da
dc.contributor.authorMoura, Bruno Lustosa de
dc.contributor.authorBeck, Paul G.
dc.contributor.authorMauro, Maria Pia Di
dc.contributor.authorAlmeida, Leandro de
dc.contributor.authorDuarte, Tharcisyo S. S.
dc.contributor.authorCoelho, Hugo R.
dc.contributor.authorCastro, Matthieu Sebastien
dc.contributor.authorNascimento Júnior, José Dias do
dc.date.accessioned2020-12-14T21:12:27Z
dc.date.available2020-12-14T21:12:27Z
dc.date.issued2020-05-06
dc.description.resumoIn order to clarify the properties of the secondary clump star HD 226808 (KIC 5307747), we combined four years of data from Kepler space photometry with high-resolution spectroscopy of the High Efficiency and Resolution Mercator Échelle Spectrograph mounted on the Mercator telescope. The fundamental atmospheric parameters, radial velocities, rotation velocities, and elemental abundance for Fe and Li were determined by analyzing line strengths and fitting-line profiles, based on a 1D local thermodynamic equilibrium model atmosphere. Second, we analyzed a photometric light curve obtained by Kepler and we extracted asteroseismic data of this target using Lets Analysis, Use and Report of Asteroseismology, a new seismic tool developed for the study of evolved FGK solar-like stars. We determined the evolutionary status and effective temperature, surface gravity, metallicity, microturbulence, and chemical abundances for Li, Ti, Fe, and Ni for HD 226808, by employing spectroscopy, asteroseismic scaling relations, and evolutionary structure models built in order to match observed data. Our results also show that an accurate synergy between good spectroscopic analysis and asteroseismology can provide a jump toward understanding evolved starspt_BR
dc.identifier.citationMOURA, Bruno Lustosa de; BECK, Paul G.; MAURO, Maria Pia di; ALMEIDA, Leandro de; DUARTE, Tharcisyo S. S.; COELHO, Hugo R.; COSTA, Jefferson S. da; CASTRO, Matthieu; NASCIMENTO, José-Dias do. Spectroscopic and Asteroseismic Analysis of the Secondary Clump Red Giant HD 226808. The Astrophysical Journal, [S.L.], v. 894, n. 1, p. 67-67, 6 maio 2020. Disponível em: https://iopscience.iop.org/article/10.3847/1538-4357/ab80c8. Acesso em: 07 out. 2020. http://dx.doi.org/10.3847/1538-4357/ab80c8.pt_BR
dc.identifier.doi10.3847/1538-4357/ab80c8
dc.identifier.issn0004-637X
dc.identifier.issn1538-4357
dc.identifier.urihttps://repositorio.ufrn.br/handle/123456789/30980
dc.languageenpt_BR
dc.publisherIOP Publishingpt_BR
dc.rightsAttribution 3.0 Brazil*
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/br/*
dc.subjectSpectroscopicpt_BR
dc.subjectAsteroseismicpt_BR
dc.titleSpectroscopic and asteroseismic analysis of the secondary clump red giant HD 226808pt_BR
dc.typearticlept_BR

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