标题： SKYSURF VIII -- 为与哈勃空间望远镜曝光时间计算器进行比较而对SKYSURF完整度数据进行建模 显示英文标题

标题： SKYSURF VIII -- Modeling SKYSURF Completeness Data for Comparison to the Hubble Space Telescope Exposure Time Calculator

摘要： 准确评估图像源的完整性对于解释望远镜数据上的测量结果至关重要。 使用哈勃空间望远镜（$HST$）档案项目“SKYSURF”的广域相机3（WFC3）和高级巡天相机（ACS）数据，我们将星系的完整性建模为曝光时间和图像背景的函数。 这是通过将具有不同亮度和大小的模拟物体添加到这些图像中，并确定每组参数的检测率来实现的。 然后将50%的完整性结果与曝光时间计算器（ETC）进行比较，以评估STSCI ETC与我们对档案数据的分析之间的差异。 最终，我们发现对于扩展星系，ETC预测的完整性极限比我们的数据暗1-2个星等。 我们认为这种差异是由于ETC的平坦表面亮度轮廓在预测扩展源时不如我们更现实的轮廓准确。 显示英文摘要

摘要： Accurately assessing image source completeness is critical for interpreting measurements on telescope data. Using the Wide Field Camera 3 (WFC3) and Advanced Camera for Surveys (ACS) data from the Hubble Space Telescope ($HST$) archival project "SKYSURF", we model galaxy completeness as a function of the exposure time and background of an image. This is accomplished by adding simulated objects with varying magnitudes and sizes into these images, and determining the detection rate for each set of parameters. The fifty percent completeness results are then compared to the Exposure Time Calculator (ETC), in order to assess the differences between the STSCI ETC and our analysis of the archival data. Ultimately, we find that, for extended galaxies, the ETC predicts a 1-2 magnitudes fainter completeness limit than our data. We believe the difference is due to the ETC's flat surface brightness profiles being less accurate at predicting for extended sources compared to our more realistic profiles.