De Moura, B. L.B. L.De MouraBeck, P. G.P. G.BeckDi Mauro, Maria PiaMaria PiaDi Maurode Almeida, L.L.de AlmeidaDuarte, T. S. S.T. S. S.DuarteCoelho, H. R.H. R.Coelhoda Costa, J. S.J. S.da CostaCastro, M.M.Castrodo Nascimento, J. D.J. D.do Nascimento2021-08-272021-08-2720200004-637Xhttp://hdl.handle.net/20.500.12386/30978In 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 stars.STAMPAenArticle10.3847/1538-4357/ab80c82-s2.0-85085283850WOS:000533308800001https://iopscience.iop.org/article/10.3847/1538-4357/ab80c82020ApJ...894...67DFIS/05 - ASTRONOMIA E ASTROFISICAERC sectors::Physical Sciences and Engineering::PE9 Universe sciences: astro-physics/chemistry/biology; solar systems; stellar, galactic and extragalactic astronomy, planetary systems, cosmology, space science, instrumentation