Spectra of 28 nearby young late-M dwarfs

Late M-type dwarfs in the solar neighborhood include a mixture of very low-mass stars and brown dwarfs that is difficult to disentangle due to the lack of constraints on their...太阳邻域中的晚型M矮星（Late M-type dwarfs）包含极低质量恒星与褐矮星的混合种群，由于缺乏对其……的约束条件，难以对这两类天体进行有效区分。