Testing photometric redshift measurements with filter definition of the Chinese Space Station Optical Survey (CSS-OS)

doi:10.1093/mnras/sty1980

CORC > 国家天文台 > 中国科学院国家天文台

	Testing photometric redshift measurements with filter definition of the Chinese Space Station Optical Survey (CSS-OS)
	Cao, Ye 2,3; Gong, Yan 2; Meng, Xian-Min 4; Xu, Cong K.5,6; Chen, Xuelei 2,3,7; Guo, Qi 2; Li, Ran 2,3; Liu, Dezi 8; Xue, Yongquan 1,9; Cao, Li 4
刊名	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
	2018-10-01
卷号	480 期号:2 页码:2178-2190
关键词	cosmology: observations large-scale structure of universe
ISSN号	0035-8711
DOI	10.1093/mnras/sty1980
英文摘要	The Chinese Space Station Optical Survey (CSS-OS) is a major science project of the Space Application System of the China Manned Space Program. This survey is planned to perform both photometric imaging and slitless spectroscopic observations, and it will focus on different cosmological and astronomical goals. Most of these goals are tightly dependent on the accuracy of photometric redshift (photo-z) measurement, especially for the weak gravitational lensing survey as a main science driver. In this work, we assess if the current filter definition can provide accurate photo-z measurement to meet the science requirement. We use the COSMOS galaxy catalogue to create a mock catalogue for the CSS-OS. We compare different photo-z codes and fitting methods that use the spectral energy distribution template-fitting technique, and choose to use a modified LEPHARE code in photo-z fitting process. Then we investigate the CSS-OS photo-z accuracy in certain ranges of filter parameters, such as band position, width, and slope. We find that the current CSS-OS filter definition can achieve reasonably good photo-z results with sigma(z) similar to 0.02 and outlier fraction similar to 3 per cent.
资助项目	Bairen program from the National Astronomical Observatories, Chinese Academy of Sciences ; MoST 863 program[2012AA121701] ; CAS grant[QYZDJ-SSW-SLH017] ; NSFC[11373030] ; China Manned Space Program through its Space Application System ; National key Research Program of China 'Scientific Big Data Management System'[2016YFB1000605] ; [NSFC-11773031] ; [NSFC-11633004] ; [NSFC-11643003] ; [NSFC-11333001] ; [11173001] ; [NSFC-11473026] ; [11421303]
WOS关键词	DIGITAL SKY SURVEY ; HUBBLE-DEEP-FIELD ; ARTIFICIAL NEURAL-NETWORKS ; SMALL-MAGELLANIC-CLOUD ; STAR-FORMING GALAXIES ; INTERSTELLAR EXTINCTION ; COSMOS FIELD ; QUASARS ; EVOLUTION ; SPECTROPHOTOMETRY
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	OXFORD UNIV PRESS
WOS记录号	WOS:000449614800058
资助机构	Bairen program from the National Astronomical Observatories, Chinese Academy of Sciences ; Bairen program from the National Astronomical Observatories, Chinese Academy of Sciences ; MoST 863 program ; MoST 863 program ; CAS grant ; CAS grant ; NSFC ; NSFC ; China Manned Space Program through its Space Application System ; China Manned Space Program through its Space Application System ; National key Research Program of China 'Scientific Big Data Management System' ; National key Research Program of China 'Scientific Big Data Management System' ; Bairen program from the National Astronomical Observatories, Chinese Academy of Sciences ; Bairen program from the National Astronomical Observatories, Chinese Academy of Sciences ; MoST 863 program ; MoST 863 program ; CAS grant ; CAS grant ; NSFC ; NSFC ; China Manned Space Program through its Space Application System ; China Manned Space Program through its Space Application System ; National key Research Program of China 'Scientific Big Data Management System' ; National key Research Program of China 'Scientific Big Data Management System' ; Bairen program from the National Astronomical Observatories, Chinese Academy of Sciences ; Bairen program from the National Astronomical Observatories, Chinese Academy of Sciences ; MoST 863 program ; MoST 863 program ; CAS grant ; CAS grant ; NSFC ; NSFC ; China Manned Space Program through its Space Application System ; China Manned Space Program through its Space Application System ; National key Research Program of China 'Scientific Big Data Management System' ; National key Research Program of China 'Scientific Big Data Management System' ; Bairen program from the National Astronomical Observatories, Chinese Academy of Sciences ; Bairen program from the National Astronomical Observatories, Chinese Academy of Sciences ; MoST 863 program ; MoST 863 program ; CAS grant ; CAS grant ; NSFC ; NSFC ; China Manned Space Program through its Space Application System ; China Manned Space Program through its Space Application System ; National key Research Program of China 'Scientific Big Data Management System' ; National key Research Program of China 'Scientific Big Data Management System'
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/23342]
专题	中国科学院国家天文台
通讯作者	Cao, Ye; Gong, Yan; Zhan, Hu
作者单位	1.Univ Sci & Technol China, Dept Astron, CAS Key Lab Res Galaxies & Cosmol, Hefei 230026, Anhui, Peoples R China 2.Chinese Acad Sci, Natl Astron Observ, Key Lab Computat Astrophys, 20A Datun Rd, Beijing 100012, Peoples R China 3.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Natl Astron Observ, Key Lab Space Astron & Technol, Beijing 100012, Peoples R China 5.Chinese Acad Sci, Natl Astron Observ, 20A Datun Rd, Beijing 100012, Peoples R China 6.CAS, South Amer Ctr Astron, Camino El Observ 1515, Santiago 7591245, Chile 7.Peking Univ, Ctr High Energy Phys, Beijing 100871, Peoples R China 8.Peking Univ, Sch Phys, Dept Astron, Beijing 100871, Peoples R China 9.Univ Sci & Technol China, Sch Astron & Space Sci, Hefei 230026, Anhui, Peoples R China
推荐引用方式 GB/T 7714	Cao, Ye,Gong, Yan,Meng, Xian-Min,et al. Testing photometric redshift measurements with filter definition of the Chinese Space Station Optical Survey (CSS-OS)[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2018,480(2):2178-2190.
APA	Cao, Ye.,Gong, Yan.,Meng, Xian-Min.,Xu, Cong K..,Chen, Xuelei.,...&Zhan, Hu.(2018).Testing photometric redshift measurements with filter definition of the Chinese Space Station Optical Survey (CSS-OS).MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,480(2),2178-2190.
MLA	Cao, Ye,et al."Testing photometric redshift measurements with filter definition of the Chinese Space Station Optical Survey (CSS-OS)".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 480.2(2018):2178-2190.