Probing FSR star cluster candidates in bulge/disc directions with 2MASS colour–magnitude diagrams
Probing FSR star cluster candidates in bulge/disc directions with 2MASS colour–magnitude diagrams
复制标题
使用 2MASS 颜色-星等图探测球核/圆盘方向的 FSR 候选星团
DOI：
10.1111/j.1365-2966.2007.12812.x
复制
发表时间：
2007
影响因子：
4.8
通讯作者：
D. Camargo
中科院分区：
文献类型：
--
作者：
E. Bica;C. Bonatto;D. Camargo
我们分析了20个候选星团，它们大多位于凸起方向（| - | < 60◦）。样本包含由Froebrich， Scholz & Raftery分类的所有候选星团，质量标志表示成为星团的高概率。色星等图（CMDs）中的凸起污染通常很重要，而在较低的银河系纬度，盘状恒星也有贡献。利用两微米全天巡天（2MASS） CMDs和用现场恒星去污染光度法建立的恒星径向密度分布图（rdp）研究了候选恒星的性质。为了揭示结构的本质，我们使用我们之前开发的用于处理密集场中的物体的工具来净化场星的cmd。我们确认在所有情况下，rdp相对于背景水平的过度，正如最初选择候选人的方法所预期的那样。CMDs和rdp加在一起揭示了6个疏散星团，5个不确定的情况需要更深入的观察，而9个物体可能是场密度波动。
We analyse 20 star cluster candidates projected mostly in the bulge direction (|� | < 60 ◦ ). The sample contains all candidates in that sector classified by Froebrich, Scholz & Raftery with quality flags denoting high probability of being star clusters. Bulge contamination in the colour‐magnitude diagrams (CMDs) is in general important, while at lower Galactic latitudes disc stars contribute as well. Properties of the candidates are investigated with Two Micron All Sky Survey (2MASS) CMDs and stellar radial density profiles (RDPs) built with field star decontaminated photometry. To uncover the nature of the structures we decontaminate the CMDs from field stars using tools that we previously developed to deal with objects in dense fields. We confirm in all cases excesses in the RDPs with respect to the background level, as expected from the method the candidates were originally selected. CMDs and RDPs taken together revealed six open clusters, five uncertain cases that require deeper observations, while nine objects are possibly field density fluctuations.
FSR 0190：另一个古老的遥远星系团
DOI：
10.1111/j.1745-3933.2007.00409.x
发表时间：
2008
期刊：
Letters
影响因子：
--
作者：
Froebrich D
通讯作者：
Froebrich D