Accurate atmospheric parameters and chemical composition of stars play a vital role in characterizing physical parameters of exoplanetary systems and understanding of their formation. A full asteroseismic characterization of a star is also possible if its main atmospheric parameters are known. The NASA Transiting Exoplanet Survey Satellite (TESS) space telescope will play a very important role in searching of exoplanets around bright stars and stellar asteroseismic variability research. We have observed all 302 bright ( V < 8 mag) and cooler than F5 spectral class stars in the northern TESS continuous viewing zone with a 1.65 m telescope at the Molėtai Astronomical Observatory of Vilnius University and the high-resolution Vilnius University Echelle Spectrograph. We uniformly determined the main atmospheric parameters, ages, orbital parameters, velocity components, and precise abundances of 24 chemical species (C(C 2 ), N(CN), [O i ], Na ...

中文翻译：

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TESS太空任务连续观察区内明亮恒星的化学成分

准确的大气参数和恒星的化学成分在表征系外行星系统的物理参数和了解其形成过程中起着至关重要的作用。如果已知恒星的主要大气参数，也可以对恒星进行完全的星震表征。NASA过境系外行星测量卫星（TESS）太空望远镜将在搜寻亮星周围的系外行星和恒星星震变化研究中扮演非常重要的角色。我们用1.65 m望远镜在维尔纽斯大学莫尔泰天文台和高分辨率维尔纽斯大学埃谢尔光谱仪上观测了TESS北部连续观测区中所有302颗明亮（V <8 mag）的恒星，并且比F5光谱级的星凉。我们统一确定了主要的大气参数，年龄，轨道参数，