BRIGHTEST X-RAY CLUSTERS OF GALAXIES IN THE CFHTLS WIDE FIELDS: CATALOG AND OPTICAL MASS ESTIMATOR
BRIGHTEST X-RAY CLUSTERS OF GALAXIES IN THE CFHTLS WIDE FIELDS: CATALOG AND OPTICAL MASS ESTIMATOR
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DOI：
10.1088/0004-637x/799/1/60
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发表时间：
2014-11
期刊：
影响因子：
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通讯作者：
M. Mirkazemi;A. Finoguenov;M. Pereira;Masayuki Tanaka;M. Lerchster;F. Brimioulle;E. Egami;K. Kettula;G. Erfanianfar;H. McCracken;Y. Mellier;J. Kneib;E. Rykoff;Stella Seitz;T. Erben;James E. Taylor
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作者：
M. Mirkazemi;A. Finoguenov;M. Pereira;Masayuki Tanaka;M. Lerchster;F. Brimioulle;E. Egami;K. Kettula;G. Erfanianfar;H. McCracken;Y. Mellier;J. Kneib;E. Rykoff;Stella Seitz;T. Erben;James E. Taylor
加拿大-法国-夏威夷望远镜遗产巡天（CFHTLS）为弱透镜研究提供了一个独特的数据集，具有高质量的成像和深多波段测光。我们已经启动了一个XMM-CFHTLS项目，以提供最明亮的X射线选择的集群在广泛的CFHTLS区域内的X射线观测。这些观测的性能和高质量的CFHTLS数据使我们能够重新识别X射线源，引入自动重复的算法，基于自动序列查找器。我们还介绍了一种新的光学质量代理。我们提供了在加拿大-法国-夏威夷滤波器中观测到的红色序列的校准，并将结果与传统的单色红色序列和photo-z。我们测试的高度显着的XMM集群的子集上的识别算法，并确定100%的样本。我们发现，红色序列星系的综合z-波段光度与X射线光度相关性很好，令人惊讶的小分散0.20德克斯。我们进一步使用的序列，以减少虚假的检测，在完整的XMM和ROSAT全天巡天（RASS）数据集，导致目录的196和32集群，分别。我们用HECTOSPEC并结合BOSS DR 9数据对其中一些系统进行了光谱跟踪观测。我们还描述了源检测算法所需的修改，以保持高纯度的扩展源中的浅X射线数据。我们还提出了X射线光度和速度色散之间的标度关系。
The Canada–France–Hawaii Telescope Legacy Survey (CFHTLS) presents a unique data set for weak-lensing studies, having high-quality imaging and deep multiband photometry. We have initiated an XMM-CFHTLS project to provide X-ray observations of the brightest X-ray-selected clusters within the wide CFHTLS area. Performance of these observations and the high quality of CFHTLS data allow us to revisit the identification of X-ray sources, introducing automated reproducible algorithms, based on the multicolor red sequence finder. We have also introduced a new optical mass proxy. We provide the calibration of the red sequence observed in the Canada–France–Hawaii filters and compare the results with the traditional single-color red sequence and photo-z. We test the identification algorithm on the subset of highly significant XMM clusters and identify 100% of the sample. We find that the integrated z-band luminosity of the red sequence galaxies correlates well with the X-ray luminosity, with a surprisingly small scatter of 0.20 dex. We further use the multicolor red sequence to reduce spurious detections in the full XMM and ROSAT All-Sky Survey (RASS) data sets, resulting in catalogs of 196 and 32 clusters, respectively. We made spectroscopic follow-up observations of some of these systems with HECTOSPEC and in combination with BOSS DR9 data. We also describe the modifications needed to the source detection algorithm in order to maintain high purity of extended sources in the shallow X-ray data. We also present the scaling relation between X-ray luminosity and velocity dispersion.