SPLASH-SXDF Multi-wavelength Photometric Catalog
SPLASH-SXDF Multi-wavelength Photometric Catalog
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DOI：
10.3847/1538-4365/aab60c
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发表时间：
2017-11
期刊：
影响因子：
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通讯作者：
V. Mehta;C. Scarlata;P. Capak;I. Davidzon;A. Faisst;B. Hsieh;O. Ilbert;M. Jarvis;C. Laigle
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文献类型：
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作者：
V. Mehta;C. Scarlata;P. Capak;I. Davidzon;A. Faisst;B. Hsieh;O. Ilbert;M. Jarvis;C. Laigle
我们提出了斯巴鲁/ xmm -牛顿深场（SXDF）的多波长目录，作为斯皮策大面积调查的一部分，使用超优相机（SPLASH）。我们将最新获得的superprime - cam Subaru战略计划的光学数据与SPLASH调查的IRAC数据结合在一起。所有可用的光学和近红外数据都在一个共同的天体测量参考框架上均匀化和重新采样。源检测是使用包括u波段在内的多波长检测图像来恢复最蓝的物体。我们测量了多波长光度，并计算了~ 117万物体在~ 4.2℃以上的光度红移以及物理性质，其中~ 80万物体在2.4℃的hsc -超深覆盖范围内。利用各种调查在0 < z < 6范围内的可用光谱红移，我们验证了光度红移的性能，我们发现归一化的中位数绝对偏差为0.023，离群分数为3.2%。SPLASH-SXDF目录是一个有价值的、公开可用的资源，非常适合研究早期宇宙中的星系，并追踪它们在宇宙时间中的演化。
We present a multi-wavelength catalog in the Subaru/XMM-Newton Deep Field (SXDF) as part of the Spitzer Large Area Survey with Hyper-Suprime-Cam (SPLASH). We include the newly acquired optical data from the Hyper-Suprime-Cam Subaru Strategic Program, accompanied by IRAC coverage from the SPLASH survey. All available optical and near-infrared data is homogenized and resampled on a common astrometric reference frame. Source detection is done using a multi-wavelength detection image including the u-band to recover the bluest objects. We measure multi-wavelength photometry and compute photometric redshifts as well as physical properties for ∼1.17 million objects over ∼4.2 deg2, with ∼800,000 objects in the 2.4 deg2 HSC-Ultra-Deep coverage. Using the available spectroscopic redshifts from various surveys over the range of 0 < z < 6, we verify the performance of the photometric redshifts and we find a normalized median absolute deviation of 0.023 and outlier fraction of 3.2%. The SPLASH-SXDF catalog is a valuable, publicly available resource, perfectly suited for studying galaxies in the early universe and tracing their evolution through cosmic time.