Ks absolute magnitudes from LAMOST for OB stars

We present a data-driven method to estimate absolute magnitudes for O- and B-type stars from the LAMOST spectra, which we combine with Gaia DR2 parallaxes to infer distance and...我们提出了一种数据驱动方法，可基于郭守敬望远镜（Large Sky Area Multi-Object Fiber Spectroscopy Telescope, LAMOST）的光谱数据估算O型和B型恒星的绝对星等，并将该方法与盖亚卫星第二数据发布（Gaia Data Release 2, Gaia DR2）的视差数据相结合，以推算恒星距离及……