Lupus YSOs X-shooter spectroscopy

The mass accretion rate, M_acc_, is a key quantity for the understanding of the physical processes governing the evolution of accretion discs around young low-mass...质量吸积率M_acc_是理解支配年轻低质量……周围吸积盘（accretion disc）演化的物理过程的关键物理量。