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Wide-Field Surveys from the SNAP Mission

机译:SNAP任务的大范围调查

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摘要

The Supernova / Acceleration Probe (SNAP) is a proposed space-borne observatory that will survey the sky with a wide-field opticalear-infrared (NIR) imager. The images produced by SNAP will have an unprecedented combination of depth, solid-angle, angular resolution, and temporal sampling. For 16 months each, two 7.5 square-degree fields will be observed every four days to a magnitude depth of AB = 27.7 in each of the SNAP filters, spanning 3500-17000A. Co-adding images over all epochs will give AB = 30.3 per filter. In addition, a 300 square-degree field will be surveyed to AB = 28 per filter, with no repeated temporal sampling. Although the survey strategy is tailored for supernova and weak gravitational lensing observations, the resulting data will support a broad range of auxiliary science programs.
机译:超新星/加速探测器(SNAP)是拟议的星载天文台,它将使用宽视场光学/近红外(NIR)成像仪对天空进行测量。 SNAP生成的图像将具有前所未有的深度,立体角度,角分辨率和时间采样的组合。在每个SNAP滤波器中,每隔16天,每四天将观察到两个7.5平方度的场,幅度深度为AB = 27.7,范围为3500-17000A。在所有时期共同添加图像,每个滤镜的AB = 30.3。此外,每个过滤器的300平方度场将被测量为AB = 28,而无需重复进行时间采样。尽管该调查策略是针对超新星和弱引力透镜观测量身定制的,但所得数据将支持广泛的辅助科学计划。

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