半人马座A重子结构巡天（SCABS）。I.调查说明和初始源目录
The Survey of Centaurus A's Baryonic Structures (SCABS). I. Survey Description and Initial Source Catalogues
摘要：
我们提出了新的，宽视场，光学（$u'g'r'i'z'$）暗能量相机的观测涵盖$\sim21\,{\rm deg}^2$集中在附近的巨大椭圆星系NGC 5128称为“调查半人马座A的重子结构”（SCABS）。数据处理和分析程序，包括初始源检测，光度和天体测量校准，图像叠加，和点扩散函数建模。我们估计至少$u'=24.08$和$23.62$ mag（AB）、$g'=22.67$和$22.27$ mag、$r'=22.46$和$22.00$ mag、$i'=22.05$和$21.63$ mag以及$z'=21.71$和$21.34$ mag的50%和90%的场相关点源完整性极限。$u'$ -、$i'$ -和$z'$ -波段中的更深成像为勘测的内部$\sim3\,{\rm deg}^2$提供了更暗的极限，并且我们发现在整个视场中具有非常稳定的光度灵敏度。源目录在所有过滤器中发布，包括空间、光度和形态信息，用于总共$\sim5\times10^5-1.5\times10^6$检测到的源（取决于过滤器）。最后，我们简要讨论了这些数据的潜在科学应用，包括但不限于SCABS团队即将开展的工作。
英文摘要：
We present new, wide-field, optical ($u'g'r'i'z'$) Dark Energy Camera observations covering $\sim21\,{\rm deg}^2$ centred on the nearby giant elliptical galaxy NGC5128 called "The Survey of Centaurus A's Baryonic Structures" (SCABS). The data reduction and analysis procedures are described including initial source detection, photometric and astrometric calibration, image stacking, and point-spread function modelling. We estimate 50 and 90 percent, field-dependent, point-source completeness limits of at least $u'=24.08$ and $23.62$ mag (AB), $g'=22.67$ and $22.27$ mag, $r'=22.46$ and $22.00$ mag, $i'=22.05$ and $21.63$ mag, and $z'=21.71$ and $21.34$ mag. Deeper imaging in the $u'$-, $i'$- and $z'$-bands provide the fainter limits for the inner $\sim3\,{\rm deg}^2$ of the survey, and we find very stable photometric sensitivity across the entire field of view. Source catalogues are released in all filters including spatial, photometric, and morphological information for a total of $\sim5\times10^5-1.5\times10^6$ detected sources (filter-dependent). We finish with a brief discussion of potential science applications for the data including, but not limited to, upcoming works by the SCABS team.
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。
