HOLISMOKES。VIII。Subaru Hyper Suprime-Cam战略计划中的高红移，强镜头搜索
HOLISMOKES. VIII. High-redshift, strong-lens search in the Hyper Suprime-Cam Subaru Strategic Program
摘要：
我们进行了一个强透镜系统的搜索包含高红移透镜星系的目标扩展强透镜辅助星系演化研究到更早的宇宙时间。两个强透镜分类器是从深度残差网络构建的，并使用不同透镜红移和亮度分布的数据集进行训练。我们从超Suprime-Cam斯巴鲁战略计划（HSC-SSP）第二次公开数据发布的宽层字段中对5，356，628个预选对象进行分类，方法是将两个分类器应用于HSC $gri$ -过滤器切口。在我们的测试集上，在对应于$10^{-3}$假阳性率的阈值处截断，两个分类器识别出5，468和6，119个强透镜候选者。通过对这些候选人的裁剪进行目视检查，总共产生了735个A级或B级强镜头候选人，其中277个候选人是首次发现的。这是迄今为止用HSC数据发现的最大的一组星系尺度强透镜候选星系，其中近一半（331/735）包含光度红移超过0.6的透镜星系。我们的发现将作为一个有价值的目标清单，为正在进行和预定的光谱调查，如暗能量光谱仪，斯巴鲁总理焦点光谱仪项目，和毛纳基光谱探测器。
英文摘要：
We carry out a search for strong-lens systems containing high-redshift lens galaxies with the goal of extending strong-lensing-assisted galaxy evolutionary studies to earlier cosmic time. Two strong-lens classifiers are constructed from a deep residual network and trained with datasets of different lens-redshift and brightness distributions. We classify a sample of 5,356,628 pre-selected objects from the Wide-layer fields in the second public data release of the Hyper Suprime-Cam Subaru Strategic Program (HSC-SSP) by applying the two classifiers to their HSC $gri$-filter cutouts. Cutting off at thresholds that correspond to a false positive rate of $10^{-3}$ on our test set, the two classifiers identify 5,468 and 6,119 strong-lens candidates. Visually inspecting the cutouts of those candidates results in 735 grade-A or B strong-lens candidates in total, of which 277 candidates are discovered for the first time. This is the single largest set of galaxy-scale strong-lens candidates discovered with HSC data to date, and nearly half of it (331/735) contains lens galaxies with photometric redshifts above 0.6. Our discoveries will serve as a valuable target list for ongoing and scheduled spectroscopic surveys such as the Dark Energy Spectroscopic Instrument, the Subaru Prime Focus Spectrograph project, and the Maunakea Spectroscopic Explorer.
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