来自第一个剪切选择星系团样品的XMM-牛顿跟踪的X射线温度、亮度和质量
X-ray Temperatures, Luminosities, and Masses From XMM-Newton Follow-up of the First Shear-selected Galaxy Cluster Sample
摘要：
我们继续研究来自深层晶状体调查（DLS，Wittman等人，2002）初始8.6平方度的剪切选择集群（Wittman等人，2006）的第一个样本;样本具有明确的选择标准，对应于调查区域中排名最高的剪切峰。我们的目标是通过检查样品的X射线特性来表征弱透镜选择。存在与几乎所有剪切峰相关的多个X射线簇：14个X射线簇对应于7个DLS剪切峰。另外三个X射线簇不能明确地与剪切峰相关联，这主要是由于X射线质心和剪切峰之间的大的位置偏移。本文报道了17个X射线团簇的X射线性质。X射线团簇具有较宽的光度和温度范围，我们对剪切关联X射线团簇所确定的Lx-Tx关系与不考虑动力学状态的X射线团簇样品的Lx-Tx关系是一致的，但与自相似性不一致.对于样本的一个子集，我们使用温度作为替代测量X射线质量，并与DLS团队确定的弱透镜质量进行比较（Abate等人，2009; Wittman等人，2014）。由此产生的质量比较与相等一致。X射线和弱透镜质量显示出相当大的内在散射（~48%），这与X射线和弱透镜质量独立测定时的X射线选择样品一致。
英文摘要：
We continue the study of the first sample of shear-selected clusters (Wittman et al. 2006) from the initial 8.6 square degrees of the Deep Lens Survey (DLS, Wittman et al. 2002); a sample with well-defined selection criteria corresponding to the highest ranked shear peaks in the survey area. We aim to characterize the weak lensing selection by examining the sample's X-ray properties. There are multiple X-ray clusters associated with nearly all the shear peaks: 14 X-ray clusters corresponding to seven DLS shear peaks. An additional three X-ray clusters cannot be definitively associated with shear peaks, mainly due to large positional offsets between the X-ray centroid and the shear peak. Here we report on the X-ray properties of the 17 X-ray clusters. The X-ray clusters display a wide range of luminosities and temperatures; the Lx-Tx relation we determine for the shear-associated X-ray clusters is consistent with X-ray cluster samples selected without regard to dynamical state, while it is inconsistent with self-similarity. For a subset of the sample, we measure X-ray masses using temperature as a proxy, and compare to weak lensing masses determined by the DLS team (Abate et al. 2009; Wittman et al. 2014). The resulting mass comparison is consistent with equality. The X-ray and weak lensing masses show considerable intrinsic scatter (~48%), which is consistent with X-ray selected samples when their X-ray and weak lensing masses are independently determined.
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