论文标题
次级团块红色巨型HD 226808的光谱和辅助分析
Spectroscopic and asteroseismic analysis of the secondary clump red giant HD 226808
论文作者
论文摘要
为了阐明二级团块HD HD 226808（KIC 5307747）的性质，我们将Kepler空间光度计的四年数据与高效和分辨率Mercatoréchelle光谱仪上的高效率和高分辨率光谱仪结合在一起。基于一维局部热力学平衡模型大气的基本大气参数，径向速度，旋转速度和Fe和Li的元素丰度通过分析线强度和拟合线轮廓来确定。其次，我们分析了通过开普勒获得的光度光曲线，并使用LETS分析，使用和报告Asterosemology，这是一种新的地震工具，这是一种用于研究进化的FGK太阳能样恒星的新地震工具。我们通过采用光谱，星座震荡的比例关系以及为了匹配观察数据的数据，确定了HD〜226808的LI，Ti，Ti，Fe和Ni的进化状态和有效温度，表面重力，金属性，微扰动性和化学丰度和HD〜226808的化学丰度。我们的结果还表明，良好的光谱分析和星星志学之间的准确协同作用可以为理解进化的恒星提供进步。}
In 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.}
