The analysis of effective galaxies number count for Chinese Space Station Optical Survey (CSS-OS) by image simulation
文献类型：期刊论文
| 作者 | Zhang, Xin1,2 ; Cao, Li1; Meng, Xianmin1
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| 刊名 | ASTROPHYSICS AND SPACE SCIENCE
 |
| 出版日期 | 2019 |
| 卷号 | 364期号:1页码:16 |
| 关键词 | Methods: data analysis Techniques: image processing Catalogues Surveys |
| ISSN号 | 0004-640X |
| DOI | 10.1007/s10509-019-3501-8 |
| 英文摘要 | The Chinese Space Station Optical Survey (CSSOS) is a mission to explore the vast universe. This mission will equip a 2-meter space telescope to perform a multi-band NUV-optical large area survey (over 40% of the sky) and deep survey ( 1% of the sky) for the cosmological and astronomical goals. Galaxy detection is one of the most important methods to achieve scientific goals. In this paper, we evaluate the galaxy number density for CSS-OS in i band (depth, i 26 for large area survey and 27 for the deep survey, point source, 5s) by the method of image simulation. We also compare galaxies detected by CSS-OS with that of LSST (i 27, point source, 5s). In our simulation, the HUDF galaxy catalogs are used to create mock images due to long enough integration time which meets the completeness requirements of the galaxy analysis for CSS-OS and LSST. The galaxy surface profile and spectrum are produced by the morphological information, photometric redshift and SEDs from the catalogs. The instrumental features and the environmental condition are also considered to produce the mock galaxy images. The galaxies of CSS-OS and LSST are both extracted by SExtractor from the mock i band image and matched with the original catalog. Through the analysis of the extracted galaxies, we find that the effective galaxy number count is 13 arcmin -2, 40 arcmin -2 and 42 arcmin -2 for CSS-OS large area survey, CSS-OS deep survey and LSST, respectively. Moreover, CSS-OS shows the advantage in small galaxy detection with high spatial resolution, especially for the deep survey: about 20% of the galaxies detected by CSS-OS deep survey are not detected by LSST, and they have a small effective radius of re < 0.3 ''. |
| WOS关键词 | PHOTOMETRIC REDSHIFTS ; SHAPELETS |
| 资助项目 | National Natural Science Foundation of China[U1731127] ; Opening Project of Key Laboratory of Computational Astrophysics, National Astronomical Observatories, Chinese Academy of Sciences ; Open Research Fund of Key Laboratory of Space Utilization, Chinese Academy of Sciences[LSU-KFJJ-2018-09] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000455573000003 |
| 出版者 | SPRINGER |
| 资助机构 | National Natural Science Foundation of China ; National Natural Science Foundation of China ; Opening Project of Key Laboratory of Computational Astrophysics, National Astronomical Observatories, Chinese Academy of Sciences ; Opening Project of Key Laboratory of Computational Astrophysics, National Astronomical Observatories, Chinese Academy of Sciences ; Open Research Fund of Key Laboratory of Space Utilization, Chinese Academy of Sciences ; Open Research Fund of Key Laboratory of Space Utilization, Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Opening Project of Key Laboratory of Computational Astrophysics, National Astronomical Observatories, Chinese Academy of Sciences ; Opening Project of Key Laboratory of Computational Astrophysics, National Astronomical Observatories, Chinese Academy of Sciences ; Open Research Fund of Key Laboratory of Space Utilization, Chinese Academy of Sciences ; Open Research Fund of Key Laboratory of Space Utilization, Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Opening Project of Key Laboratory of Computational Astrophysics, National Astronomical Observatories, Chinese Academy of Sciences ; Opening Project of Key Laboratory of Computational Astrophysics, National Astronomical Observatories, Chinese Academy of Sciences ; Open Research Fund of Key Laboratory of Space Utilization, Chinese Academy of Sciences ; Open Research Fund of Key Laboratory of Space Utilization, Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Opening Project of Key Laboratory of Computational Astrophysics, National Astronomical Observatories, Chinese Academy of Sciences ; Opening Project of Key Laboratory of Computational Astrophysics, National Astronomical Observatories, Chinese Academy of Sciences ; Open Research Fund of Key Laboratory of Space Utilization, Chinese Academy of Sciences ; Open Research Fund of Key Laboratory of Space Utilization, Chinese Academy of Sciences |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/24712]  |
| 专题 | 中国科学院国家天文台 |
| 通讯作者 | Zhang, Xin |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Space Astron & Technol, Natl Astron Observ, Beijing 100012, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Xin,Cao, Li,Meng, Xianmin. The analysis of effective galaxies number count for Chinese Space Station Optical Survey (CSS-OS) by image simulation[J]. ASTROPHYSICS AND SPACE SCIENCE,2019,364(1):16. |
| APA | Zhang, Xin,Cao, Li,&Meng, Xianmin.(2019).The analysis of effective galaxies number count for Chinese Space Station Optical Survey (CSS-OS) by image simulation.ASTROPHYSICS AND SPACE SCIENCE,364(1),16. |
| MLA | Zhang, Xin,et al."The analysis of effective galaxies number count for Chinese Space Station Optical Survey (CSS-OS) by image simulation".ASTROPHYSICS AND SPACE SCIENCE 364.1(2019):16. |
入库方式： OAI收割
来源：国家天文台
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