Spectroscopy of NGC 7789

We have obtained high-resolution spectra of 32 giants in the open cluster NGC 7789 using the Wisconsin-Indiana-Yale-NOAO Hydra spectrograph. We explore differences in...我们利用威斯康星-印第安纳-耶鲁-美国国家光学天文台（NOAO）Hydra摄谱仪，获取了疏散星团NGC 7789内32颗巨星的高分辨率光谱，并对其中存在的差异展开了探讨……