Deep Optical Imaging of the COSMOS Field with Hyper Suprime-Cam Using Data from the Subaru Strategic Program and the University of Hawaii
Deep Optical Imaging of the COSMOS Field with Hyper Suprime-Cam Using Data from the Subaru Strategic Program and the University of Hawaii
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2017-06
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通讯作者：
Masayuki Tanaka;G. Hasinger;J. Silverman;S. Bickerton;H. Furusawa;Y. Harikane;E. Hu;H. Ikeda;Yanxia Li;H. McCracken;P. Price;M. Strauss;Michitaro Koike;Y. Komiyama;S. Mineo;S. Miyazaki;A. Nishizawa;T. Takata;Y. Utsumi;Y. Yamada;N. Yasuda
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作者：
Masayuki Tanaka;G. Hasinger;J. Silverman;S. Bickerton;H. Furusawa;Y. Harikane;E. Hu;H. Ikeda;Yanxia Li;H. McCracken;P. Price;M. Strauss;Michitaro Koike;Y. Komiyama;S. Mineo;S. Miyazaki;A. Nishizawa;T. Takata;Y. Utsumi;Y. Yamada;N. Yasuda
我们提出了最深的COSMOS领域的光学图像的基础上，由HSC斯巴鲁战略计划（SSP）团队和夏威夷大学（UH）的超Suprime-Cam（HSC）采取的联合数据集。COSMOS场是关键的河外场之一，拥有丰富的深层多波长数据。然而，目前的光学数据不够深，无法与例如，近红外线的UltraVista数据SSP团队和UH已经联合起来，通过结合两个团队的数据来制作COSMOS领域的非常深的光学图像。对于基于管道引用的通量不确定性的点源，共加图像在5 σ处达到g=27.8、r=27.7、i=27.6、z=26.8和y=26.2等的深度，并且它们基本上覆盖了整个COSMOS 2平方度场。视宁度在0.6到0.9角秒之间。我们进行了几次质量检查，并确认数据具有科学质量; ~2%测光和30 mas天体测量。该精度与HSC-SSP的公共数据版本1相同。我们使联合数据集，包括完全校准的目录检测到的对象提供给社区在这个https URL。
We present the deepest optical images of the COSMOS field based on a joint dataset taken with Hyper Suprime-Cam (HSC) by the HSC Subaru Strategic Program (SSP) team and the University of Hawaii (UH). The COSMOS field is one of the key extragalactic fields with a wealth of deep, multi-wavelength data. However, the current optical data are not sufficiently deep to match with, e.g., the UltraVista data in the near-infrared. The SSP team and UH have joined forces to produce very deep optical images of the COSMOS field by combining data from both teams. The coadd images reach depths of g=27.8, r=27.7, i=27.6, z=26.8, and y=26.2 mag at 5 sigma for point sources based on flux uncertainties quoted by the pipeline and they cover essentially the entire COSMOS 2 square degree field. The seeing is between 0.6 and 0.9 arcsec on the coadds. We perform several quality checks and confirm that the data are of science quality; ~2% photometry and 30 mas astrometry. This accuracy is identical to the Public Data Release 1 from HSC-SSP. We make the joint dataset including fully calibrated catalogs of detected objects available to the community at this https URL.