标题： 利用开普勒恒星振荡数据校准LAMOST恒星表面重力 显示英文标题

标题： Calibration of LAMOST Stellar Surface Gravities Using the Kepler Asteroseismic Data

摘要： 星震学是精确确定恒星演化状态和基本属性的强大工具。借助NASA开普勒任务前所未有的精度和近乎连续的测光数据，已有超过10$^4$颗恒星的参数被几乎一致地测定。然而，大多数研究仍然使用由测光方法得到的有效温度（Teff）和金属丰度（[Fe/H]），而这些值并未达到充分准确的程度，如先前研究所示。我们采用了基于LAMOST低分辨率光谱（R~1,800）的光谱学Teff和[Fe/H]值，并结合全局振荡参数来推导大样本恒星的物理参数。发现{\Delta }logg（LAMOST-地震学）与光谱学Teff以及logg之间存在明显趋势，这可能导致LAMOST目录中的巨星logg值高估达0.5 dex。我们为矮星和巨星的logg值建立了经验校准关系。这些结果可用于根据这些恒星的光谱参数确定它们的精确距离。 显示英文摘要

摘要： Asteroseismology is a powerful tool to precisely determine the evolutionary status and fundamental properties of stars. With the unprecedented precision and nearly continuous photometric data acquired by the NASA Kepler mission, parameters of more than 10$^4$ stars have been determined nearly consistently. However, most studies still use photometric effective temperatures (Teff) and metallicities ([Fe/H]) as inputs, which are not sufficiently accurate as suggested by previous studies. We adopted the spectroscopic Teff and [Fe/H] values based on the LAMOST low-resolution spectra (R~1,800), and combined them with the global oscillation parameters to derive the physical parameters of a large sample of stars. Clear trends were found between {\Delta}logg(LAMOST - seismic) and spectroscopic Teff as well as logg, which may result in an overestimation of up to 0.5 dex for the logg of giants in the LAMOST catalog. We established empirical calibration relations for the logg values of dwarfs and giants. These results can be used for determining the precise distances to these stars based on their spectroscopic parameters.