论文标题
PSZSPT：联合Planck和SPT-SZ群集目录
PSZSPT: a joint Planck and SPT-SZ cluster catalog
论文作者
论文摘要
我们介绍了第一个从合并的空间（PLANCK）和地面（South Pole望远镜； SPT-SZ）毫米数据中提取的群集目录。我们开发并应用了一个匹配的多滤波器（MMF），能够处理两个数据集的不同传输功能和分辨率。我们证实，当单独应用于数据集时，它与普朗克和SPT协作的出版物产生的结果一致。我们还验证了Planck和SPT-SZ群集通量彼此一致。当盲目应用于组合数据集时，MMF生成了419个检测（$ s/n> 5 $）的目录，其中323个已经成为SPT-SZ或PSZ2目录的一部分； 54是新的SZ检测，这些检测已在其他目录或调查中鉴定出来； 42岁是新的身份不明的候选人。 MMF利用了两个数据集的互补性，Planck对于以低红移（$ z <0.3 $）检测簇特别有用，而SPT有效地找到了更高的红移（$ z> 0.3 $）。这项工作代表了一个概念证明，即可以对从空间和地面获取的合并，不均匀的毫米数据集进行盲簇提取。该结果对于计划的基于地面的宇宙微波背景（CMB）实验至关重要（例如Simons天文台，CMB-S4），并设想CMB空间任务（例如Pico，Backlight），这些任务将在低质量制度中检测到数十万个群集（$ m_ $ _ $ _ {50000} $ {500} \ le）ods，群集内发射的各种来源（气体，灰尘，同步子）的数量级相同，因此需要广泛的地面和空间频率覆盖范围，并具有可比的空间分辨率以进行适当的分离。
We present the first cluster catalog extracted from combined space-based (Planck) and ground-based (South Pole Telescope; SPT-SZ) millimeter data. We developed and applied a matched multi-filter (MMF) capable of dealing with the different transfer functions and resolutions of the two datasets. We verified that it produces results consistent with publications from Planck and SPT collaborations when applied on the datasets individually. We also verified that Planck and SPT-SZ cluster fluxes are consistent with each other. When applied blindly to the combined dataset, the MMF generated a catalog of 419 detections ($S/N>5$), of which 323 are already part of the SPT-SZ or PSZ2 catalogs; 54 are new SZ detections, which have been identified in other catalogs or surveys; and 42 are new unidentified candidates. The MMF takes advantage of the complementarity of the two datasets, Planck being particularly useful for detecting clusters at a low redshift ($z<0.3$), while SPT is efficient at finding higher redshift ($z>0.3$) sources. This work represents a proof of concept that blind cluster extraction can be performed on combined, inhomogeneous millimeter datasets acquired from space and ground. This result is of prime importance for planned ground-based cosmic microwave background (CMB) experiments (e.g., Simons Observatory, CMB-S4) and envisaged CMB space missions (e.g., PICO, Backlight) that will detect hundreds of thousands of clusters in the low mass regime ($M_{500} \leqslant 10^{14} M_\odot$), for which the various sources of intra-cluster emission (gas, dust, synchrotron) will be of the same order of magnitude and hence require broad ground and space frequency coverage with a comparable spatial resolution for adequate separation.
