论文标题
Skysurf-3：测试哈勃极端深部镶嵌物中拥挤的物体目录，从外层次背景光的角度研究样本不完整。
SKYSURF-3: Testing Crowded Object Catalogs in the Hubble eXtreme Deep Field Mosaics to Study Sample Incompleteness from an Extragalactic Background Light Perspective
论文作者
论文摘要
外乳外背景光（EBL）的研究揭示了直接测量之间存在显着差异 - 通过测量“裸机”的仪器，减去了黄道带和银河光模型的“裸机” - 综合星系光（IGL）的测量值。这种差异都可能在于这两种方法，无论它是一个不完整的黄道十二霉菌模型还是IGL计算中错过的微弱星系。有人提出，差异是由于深度星系调查，例如具有哈勃太空望远镜（HST）的差异，缺少多达一半的微弱星系，$ 24 \ le m_ {ab} \ le 29 $。我们通过模拟星系的数量密度较高，从而解决这种可能性，从而评估由于对象重叠而导致的不完整，并使用三个哈勃超过超过超过的超过超过超过的磁场（HUDF）进行了复制。 SourceExtractor用于将恢复的计数和光度法与原始HUDF进行比较，从而使我们能够评估由于混乱而可能错过了多少星系，即，由于与相邻的微弱星系混合在一起。这项练习表明，尽管多达50％的微弱星系，$ 28 \ le m_ {ab} \ le 29 $ mag被错过了或与某些过滤器中的相邻物体混合，但在任何复制中都没有遗失足够的遗漏来解释EBL差异。
Extragalactic Background Light (EBL) studies have revealed a significant discrepancy between direct measurements -- via instruments measuring "bare" sky from which Zodiacal and Galactic light models are subtracted -- and measurements of the Integrated Galaxy Light (IGL). This discrepancy could lie in either method, whether it be an incomplete Zodiacal model or missed faint galaxies in the IGL calculations. It has been proposed that the discrepancy is due to deep galaxy surveys, such as those with the Hubble Space Telescope (HST), missing up to half of the faint galaxies with $24 \le m_{AB} \le 29$ mag. We address this possibility by simulating higher number densities of galaxies, and so assess incompleteness due to object overlap, with three replications of the Hubble UltraDeep Field (HUDF). SourceExtractor is used to compare the recovered counts and photometry to the original HUDF, allowing us to assess how many galaxies may have been missed due to confusion, i.e., due to blending with neighboring faint galaxies. This exercise reveals that, while up to 50% of faint galaxies with $28 \le m_{AB} \le 29$ mag were missed or blended with neighboring objects in certain filters, not enough were missed to account for the EBL discrepancy alone in any of the replications.
