论文标题
银河球簇palomar 3的恒星种群和轨道3
The Stellar Population and Orbit of the Galactic Globular Cluster Palomar 3
论文作者
论文摘要
Deep stellar photometry of one of the most distant Galactic globular clusters, Palomar 3, based on frames taken with the VLT in Johnson-Cousins broadband V and Ifilters is presented, together with medium-resolution stellar spectroscopy in the central region of the cluster obtained with the CARELEC spectrograph of the Observatoire de Haute Provence and measurements of the Lick spectral indices for the integrated spectrum.还介绍了具有相似金属性和年龄的palomar 3和9个银河球状簇的轨道参数的计算。估计了Palomar 3的轨道参数，年龄，金属性和距离。星际吸收与文献中的值一致并补充值。强调了群集星的适当运动，年龄和化学成分以阐明该球状簇的起源的更准确数据的需求。
Deep stellar photometry of one of the most distant Galactic globular clusters, Palomar 3, based on frames taken with the VLT in Johnson-Cousins broadband V and Ifilters is presented, together with medium-resolution stellar spectroscopy in the central region of the cluster obtained with the CARELEC spectrograph of the Observatoire de Haute Provence and measurements of the Lick spectral indices for the integrated spectrum. Computations of the orbital parameters of Palomar 3 and nine Galactic globular clusters with similar metallicities and ages are also presented. The orbital parameters, age, metallicity, and distance of Palomar 3 are estimated. The interstellar absorption is consistent with and supplements values from the literature. The need to obtain more accurate data on the proper motions, ages, and chemical compositions of the cluster stars to elucidate the origin of this globular cluster is emphasized.
