论文标题
对银河球状簇M30（NGC 7099）的远硫酸酯研究：ii。潜在的X射线对应物和可变来源
Far-ultraviolet investigation into the galactic globular cluster M30 (NGC 7099): II. Potential X-ray counterparts and variable sources
论文作者
论文摘要
我们提出了一项针对球状簇M30（NGC 7099）的遥远脱离（FUV）。使用高级摄像头进行调查（ACS/SBC，F150LP，FUV）和宽场行星摄像头2（WFPC2，F300W，UV）在Hubble Space望远镜（HST）上获得图像。我们将FUV对象的目录与十个已知的X射线源进行了比较，并找到了两个灾难性变量（CVS），一个RS CVN，一个具有强烈FUV发射的红色巨人和仅在FUV中检测到的两个来源的六个自信匹配。我们还搜索了数据集中的可变源，并发现了总共七个蓝色散乱者（BSS），四个水平分支（HB）恒星，五个红色巨型分支星星，28个主要序列星和四个显示可变性的差距对象。一个BS星是已知的W-UMA触点二进制，其中一个差距对象是这项工作中识别为矮nova的已知CV，而其他三个差距源是弱变量。两个变量HB恒星的周期和位置与它们类型的RRAB和RRC类型的两个先前已知的RR Lyrae变量相匹配。
We present a far-ultraviolet (FUV) study of the globular cluster M30 (NGC 7099). The images were obtained using the Advanced Camera for Surveys (ACS/SBC, F150LP, FUV) and the Wide Field Planetary Camera 2 (WFPC2, F300W, UV) on board the Hubble Space Telescope (HST). We compare the catalogue of FUV objects to ten known X-ray sources and find six confident matches of two cataclysmic variables (CVs), one RS CVn, one red giant with strong FUV emission and two sources only detected in the FUV. We also searched for variable sources in our dataset and found a total of seven blue stragglers (BSs), four horizontal branch (HB) stars, five red giant branch stars, 28 main sequence stars and four gap objects that demonstrated variability. One BS star is a known W-UMa contact binary, one of the gap objects is a known CV identified in this work to be a dwarf nova, and the three other gap sources are weak variables. The periods and positions of two of the variable HB stars match them to two previously known RR Lyrae variables of types RRab and RRc.
