宇宙演化地图
The Evolutionary Map of the Universe Pilot Survey
摘要：
我们提出的数据和初步结果，从第一个试点调查的宇宙进化图（EMU），在944 MHz的澳大利亚平方公里阵列探路者（ASKAP）望远镜观察。该调查覆盖了暗能量调查所覆盖区域的270 \sqdeg，达到25- 30 \ujybm \ rms的深度，空间分辨率为$\sim$ 11- 18角秒，产生了$\sim$ 220，000个源的目录，其中$\sim$ 180，000个是单组分源。在这里，我们提出了单组分源的目录，连同（在可用的情况下）光学和红外交叉识别，分类和红移。与以前的调查相比，这次调查探索了一个新的参数空间区域。具体而言，EMU试点调查具有高密度的源，并且对低表面亮度发射也具有高灵敏度。这些属性导致检测到在以前的调查中很少看到或不存在的源类型。我们在这里介绍一些新的结果。
英文摘要：
We present the data and initial results from the first Pilot Survey of the Evolutionary Map of the Universe (EMU), observed at 944 MHz with the Australian Square Kilometre Array Pathfinder (ASKAP) telescope. The survey covers 270 \sqdeg of an area covered by the Dark Energy Survey, reaching a depth of 25--30 \ujybm\ rms at a spatial resolution of $\sim$ 11--18 arcsec, resulting in a catalogue of $\sim$ 220,000 sources, of which $\sim$ 180,000 are single-component sources. Here we present the catalogue of single-component sources, together with (where available) optical and infrared cross-identifications, classifications, and redshifts. This survey explores a new region of parameter space compared to previous surveys. Specifically, the EMU Pilot Survey has a high density of sources, and also a high sensitivity to low surface-brightness emission. These properties result in the detection of types of sources that were rarely seen in or absent from previous surveys. We present some of these new results here.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
