论文标题
开放簇星中的钼
Molybdenum in the open cluster stars
论文作者
论文摘要
确定了来自13个不同开放簇的恒星中钼的丰度。使用配备了Cerro Paranal的uves光谱仪的VLT望远镜获得了高分辨率恒星光谱。 MO的丰度是从5506 A和5533 A的Mo I线的LTE近似中得出的。对开放簇的采样恒星中钼的行为的比较分析，银河盘和银河盘显示出相似的降低Mo丰度随着金属度的降低的趋势；这种行为模式表明了所检查的人群的共同起源。另一方面，开放簇恒星中Mo丰度的散射略大，为0.14 DEX与0.11 DEX。考虑了与星系中心的群集和距离年龄的丰度趋势，讨论了结果。
Molybdenum abundances in the stars from 13 different open clusters were determined. High-resolution stellar spectra were obtained using the VLT telescope equipped with the UVES spectrograph on Cerro Paranal, Chile. The Mo abundances were derived in the LTE approximation from the Mo I lines at 5506 A and 5533 A. A comparative analysis of the behaviour of molybdenum in the sampled stars of open clusters and Galactic disc show similar trends of decreasing Mo abundances with increasing metallicities; such a behaviour pattern suggests a common origin of the examined populations. On the other hand, the scatter of Mo abundances in the open cluster stars is slightly greater, 0.14 dex versus 0.11 dex. The results are discussed, considering the abundance trends with the age of clusters and distances from the center of the Galaxy.
