Abundances of mu Lep, 7 Sex, HR 4817 & 28 Her

Elemental abundances are derived for four sharp-lined stars, the Mercury-Manganese stars {mu} Lep, HR 4817, and 28 Her, and 7 Sex, a Population I star with Population II space...本研究为四颗锐线星（sharp-lined stars）推导出元素丰度，这四颗星分别为汞锰星（Mercury-Manganese stars）μ Lep、HR 4817、28 Her，以及7 Sex——后者为一颗具有星族II（Population II）空间特征的星族I（Population I）恒星。