WOCS.LXXVI.Velocity & abundances in NGC2506

HYDRA spectra of 287 stars in the field of NGC 2506 from the turnoff through the giant branch are analyzed. With previous data, 22 are identified as probable binaries; 90 more...针对NGC 2506天区中287颗处于主序转离点至巨星支演化阶段的恒星，我们对其HYDRA光谱（HYDRA）进行了分析。结合既往观测数据，其中22颗被认定为疑似双星；另有90颗……