加那利群岛天文台普朗克PSZ2源的光学确认和特性。II。LP15第二年观测
Optical validation and characterization of Planck PSZ2 sources at the Canary Islands observatories. II. Second year of LP15 observations
摘要：
我们介绍了我们的光学后续计划128-MULTIPLE-16/15 B（LP 15）在罗克德洛斯穆查乔斯天文台（La Palma）的第二年和最后一年的观测结果，该计划的目的是验证北部天空中所有未识别的PSZ 2源，其分辨率高于-15度，并且在第一个普朗克目录PSZ 1中没有对应关系。我们采用了一个强大的确认标准的基础上的速度色散和丰富的估计，以进行最终的分类的新的星系团的光学对应的PSZ 2检测。我们还介绍了该计划的最终结果，显示了PSZ 2样品纯度和完整性的更新。在LP 15程序之后，我们发现PSZ 2的纯度从最初的76.7%提高到86.2%。此外，我们研究了可能的原因，有错误的检测，我们报告了一个明确的相关性之间的未证实的来源和银河系热尘埃排放的数量。
英文摘要：
We present the second and last year of observations of our optical follow-up programme 128-MULTIPLE-16/15B (LP15 )at Roque de los Muchachos Observatory (La Palma), which has been developed with the aim of validating all the unidentified PSZ2 sources in the northern sky, with declination above -15deg, and with no correspondence in the first Planck catalogue PSZ1. We adopt a robust confirmation criteria based on velocity dispersion and richness estimations in order to carry out the final classification of the new galaxy clusters as the optical counterparts of the PSZ2 detections. We also present final results of the programme, showing an update of the purity and completeness of the PSZ2 sample. After the LP15 programme, we find that the purity of the PSZ2 has increased from 76.7% originally to 86.2%. In addition, we study the possible reasons of having false detection, and we report a clear correlation between the number of unconfirmed sources and galactic thermal dust emission.
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