论文标题

S-Plus DR1 Galaxy群集和组使用PZWAV

S-PLUS DR1 galaxy clusters and groups catalogue using PzWav

论文作者

Werner, S. V., Cypriano, E. S., Gonzalez, A. H., de Oliveira, C. Mendes, Araya-Araya, P., Doubrawa, L., de Oliveira, R. Lopes, Lopes, P. A. A., Vitorelli, A. Z., Brambila, D., Costa-Duarte, M., Telles, E., Kanaan, A., Ribeiro, T., Schoenell, W., Gonçalves, T. S., Menéndez-Delmestre, K., Bom, C. R., Nakazono, L.

论文摘要

我们提出了一个由4499组和星系群组成的目录,该数据群是从多滤波器(5宽,7个狭窄)的南部光度局部宇宙调查(S-Plus)的第一个数据释放中。这些组和簇在82区域的273度$^2 $上分布。使用PZWAV算法发现它们,该算法识别了星系密度图中的峰值,这些峰通过群集量表差异差异差异来分离簇和基团。使用基于仿真的模拟目录,我们估计群集检测的纯度和完整性:在S/N> 3.3处,我们定义了一个纯净且在红移范围为0.1 <z <0.4的目录,对于$ M_ {200}> 10^{14} {14} $ _ $ _ $ _ \ odot $。我们还根据中心位置和红移评估了目录的准确性,发现$σ_R= 12 $ kpc和$σ_z= 8.8 \ times 10^{ - 3} $。此外,只有不到1%的样本遭受破碎或夸大。 S-Plus群集目录恢复了所有已知的X射线和Sunyaev-Zel'Dovich选定簇的所有已知X射线的约80%。该部分非常接近估计的完整性,从而验证了模拟数据分析并使用正在进行的S-Plus项目中的数据来查找新组和星系组的有效方法。完成后,S-Plus将调查天空的9300度$^{2} $,代表了最宽的非中断区域,具有狭窄的直通型多波段光度计,用于群集随访研究。

We present a catalogue of 4499 groups and clusters of galaxies from the first data release of the multi-filter (5 broad, 7 narrow) Southern Photometric Local Universe Survey (S-PLUS). These groups and clusters are distributed over 273 deg$^2$ in the Stripe 82 region. They are found using the PzWav algorithm, which identifies peaks in galaxy density maps that have been smoothed by a cluster scale difference-of-Gaussians kernel to isolate clusters and groups. Using a simulation-based mock catalogue, we estimate the purity and completeness of cluster detections: at S/N>3.3 we define a catalogue that is 80% pure and complete in the redshift range 0.1<z<0.4, for clusters with $M_{200} > 10^{14}$ M$_\odot$. We also assessed the accuracy of the catalogue in terms of central positions and redshifts, finding scatter of $σ_R=12$ kpc and $σ_z=8.8 \times 10^{-3}$, respectively. Moreover, less than 1% of the sample suffers from fragmentation or overmerging. The S-PLUS cluster catalogue recovers ~80% of all known X-ray and Sunyaev-Zel'dovich selected clusters in this field. This fraction is very close to the estimated completeness, thus validating the mock data analysis and paving an efficient way to find new groups and clusters of galaxies using data from the ongoing S-PLUS project. When complete, S-PLUS will have surveyed 9300 deg$^{2}$ of the sky, representing the widest uninterrupted areas with narrow-through-broad multi-band photometry for cluster follow-up studies.

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