郭守敬望远镜巡天数据中M型星的大气参数测量及增值星表构建

郭守敬望远镜巡天光谱的星表数据中缺乏M型星的大气参数测量值和可靠的视向速度、距离估计值，这大大限制了M型星光谱样本在银河系相关研究中的有效应用。为了解决这一迫切问题，本项目将从郭守敬望远镜巡天数据中挑选M型星光谱样本，并基于APOGEE提供的高精度大气参数值来构建M型星标准参数模板，利用模板匹配的方法来实现对大样本M型星大气参数和视向速度的测量。进一步，我们还将通过有GAIA视差测量结果的定标星来改进M巨星的颜色-绝对星等关系，实现对银河系晕中M巨星距离的可靠估计。我们将构建一套具有大气参数和六维相空间信息在内的大样本M型星增值星表，为银河系结构和演化的研究提供大数据支持。

Accurate determination of stellar atmospheric parameters, radial velocity and distance of M-type stars is crucial for Galactic research via LAMOST spectroscopic survey. However, at present, there is no stellar atmospheric parameters in the LAMOST M-type star catalog. In order to solve this problem and fully utilize the M-type spectra, we plan to categorize M-type stars in the LAMOST spectra and further estimate atmospheric parameters and velocity of M-type stars. In this project, we will combine LAMOST M-type spectra and the atmospheric parameters provided by APOGEE high resolution spectral data to rebuild M-type spectral template. Then, we can use the template-fit method to automatically calculate atmospheric parameters and radial velocity of all M-type stars in the LAMOST spectra database. Further more, we will provide distance information of all M-type stars based on the GAIA survey. Finally, a value-added catalog of M-type stars including stellar atmospheric parameters and kinematic information will be provided.