论文标题
C，T1，T2：通过华盛顿滤波器系统检测多个人群的补充方法
C,T1,T2: A complementary method to detect Multiple Populations with the Washington filter system
论文作者
论文摘要
在这项研究中，我们测试了三个华盛顿过滤器组合（C-T1） - （T1-T2）的能力，与传统的C-T1颜色相比，在两个球状簇上找到了多个种群：NGC 7099和NGC 1851，I型和II型和II型球形簇。我们改进的光度法和成员选择现在使用Gaia的适当动作，发现第二个人口明星比第一人口明星更集中，这与我们先前对NGC 7099的发现相反。我们发现，在两个群集中使用新的（C-T1-T1） - （T1-T2）颜色更容易地检测到多个群体，尽管C-T1颜色（T1-T2）颜色是最佳的，但最佳的是保守率。我们还在NGC 1851中拆分红色RGB和Blue-RGB的同时搜索两种颜色的差异，但没有发现显着改善。
In this research we test the ability of a three Washington filter combination, (C-T1)-(T1-T2), compared with that of the traditional C-T1 color to find multiple populations on two globular clusters: NGC 7099 and NGC 1851, types I and II Globular clusters, respectively. Our improved photometry and membership selection, now using Gaia proper motions, finds that the second population stars are more centrally concentrated than first population stars, as expected and contrary to our previous findings for NGC 7099. We find that multiple populations are more easily detected in both clusters using the new (C-T1)-(T1-T2) color, although C-T1 conserves the best width/error ratio. We also search for differences of both colors while splitting the red-RGB and the blue-RGB in NGC 1851, but no significant improvement was found.
