Mass loss from Miras with and without Tc

We follow-up on a previous finding that AGB Mira variables containing the third dredge-up indicator technetium (Tc) in their atmosphere form a different sequence of K-[22]...本研究基于此前一项观测发现展开后续分析：大气中含有作为第三次挖掘（third dredge-up）指示物锝（Tc）的AGB型米拉变星（Asymptotic Giant Branch Mira variables），其K-[22]序列与其他同类天体存在显著差异……