论文标题
边界场上的群内灯簇簇Abell 370和Abell S1063
The intracluster light on Frontier Fields clusters Abell 370 and Abell S1063
论文作者
论文摘要
我们分析了簇内光（ICL）对边境领域计划中哈勃空间望远镜观察到的两个大型星系簇的总光度的贡献，Abell 370（Z〜0.375）（Z〜0.375）和Abell S1063（Z〜0.348）与这些系统相关，以使其与这些系统相关。 Chebyshev较高的功能称为Cicle，是专门开发的，目的是将ICL从星系的光中解散并测量ICL馏分。我们在三个宽带光学过滤器（F435W，F606W和F814W）中测量了ICL分数，而没有假设有关ICL物理特性或形态的任何先前假设。从ICL分数获得的结果分别在〜7％-25％和〜3％-22％之间，分别为〜3％ - 22％，分别为AS1063，这与ICL形成和进化模拟获得的ICL总量的理论预测一致。我们在中间过滤F606W中构建了ICL裂缝，这是在中间过剩的情况下，我们建议通过Clusters and Iss for Clusters，我们建议使用Clusters and Callusters，我们建议使用Clusters and Callusters and Callusters and Callusters and Calluse and Clusters and clusters。与集群星系相比，ICL中的年轻/低金属性星。我们得出的结论是，Abell 370和Abell S1063都在合并系统，因为它们表现出与合并冲突和边境场群集群集子样本相似的特征。我们将这些结果与通过不同方法获得的动态指标进行了比较，并加强了将ICL用作确定星系簇的动态状态的新方法。
We analyzed the contribution of the intracluster light (ICL) to the total luminosity of two massive galaxy clusters observed by the Hubble Space Telescope within the Frontier Fields program, Abell 370 (z ~ 0.375) and Abell S1063 (z ~ 0.348), in order to correlate it with the dynamical stage of these systems.We applied an algorithm based on the Chebyshev-Fourier functions called CICLE, specially developed to disentangle the ICL from the light of galaxies and measure the ICL fraction. We measured the ICL fraction in three broadband optical filters, F435W, F606W, and F814W, without assuming any prior hypothesis about the ICL physical properties or morphology. The results obtained from the ICL fraction vary between ~7% - 25%, and ~3% - 22% for both A370 and AS1063, respectively, which are consistent with theoretical predictions for the total amount of ICL obtained by ICL formation and evolution simulations.We found enhanced ICL fractions in the intermediate filter F606W for both clusters and we suggest that this is due to the presence of an excess of younger/lower-metallicity stars in the ICL compared to the cluster galaxies. We conclude that both Abell 370 and Abell S1063 are merging systems since they exhibit a similar feature as merging CLASH and Frontier Fields clusters sub-sample previously analyzed. We compare these results to the dynamical indicators obtained through different methods and we reinforce the use of ICL as a new and independent method to determine the dynamical state of clusters of galaxies.
