We present a sample of ∼140,000 primary red clump (RC) stars of spectral signal-to-noise ratios higher than 20 from the Large Sky Area Multi-Object Fibre Spectroscopic Telescope (LAMOST) Galactic spectroscopic surveys, selected based on their positions in the metallicity-dependent effective temperature–surface gravity and color–metallicity diagrams, supervised by high-quality Kepler asteroseismology data. The stellar masses and ages of those stars are further determined from the LAMOST spectra, using the kernel principal component analysis method and are trained with thousands of RCs in the LAMOST–Kepler fields with accurate asteroseismic mass measurements. The purity and completeness of our primary RC sample are generally higher than 80%. For the mass and age, a variety of tests show typical uncertainties of 15% and 30%, respectively. Using over 10,000 primary RCs with accurate distance measurements from the parallaxes of Gaia Data Release 2 (DR2), we recalibrate the K <...

中文翻译：

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使用LAMOST和Gaia Red Clump示例映射银河盘。I.约140,000个红团星的精确距离，质量，年龄和3D速度

我们从大天空区域多目标光纤光谱望远镜（LAMOST）银河光谱调查中选取了约140,000个光谱信噪比高于20的原红团块（RC）星，并根据其在星云中的位置进行选择。与金属性有关的有效温度-表面重力和颜色-金属性图表，由高质量的开普勒卫星地震学数据监督。使用核主成分分析方法进一步从LAMOST光谱中确定这些恒星的恒星质量和年龄，并通过LAMOST–Kepler场中的数千个RC进行精确的星震质量测量，对它们进行训练。我们的主要RC样品的纯度和完整性通常高于80％。对于质量和年龄，各种测试表明典型不确定度分别为15％和30％。