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CSST large-scale structure analysis pipeline: II. The CSST Emulator for Slitless Spectroscopy

文献类型：期刊论文

作者Wen, Run3,8; Zheng, Xian Zhong3,8; Han YK(韩云坤)6; Yang, Xiaohu2,7; Wang, Xin4,5; Zou, Hu4; Liu, Fengshan1,4,5; Zhang, Xin1,4; Zu, Ying2; Shi, Dong Dong3
刊名MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
出版日期2024-01-23
卷号528期号:2页码:2770-2783
ISSN号0035-8711
关键词methods: data analysis techniques: spectroscopic galaxies: general large-scale structure of Universe
DOI10.1093/mnras/stae157
产权排序第3完成单位
文献子类Article
英文摘要The Chinese Space Station Telescope (CSST) slitless spectroscopic survey will observe objects to a limiting magnitude of similar to 23 mag (5 sigma, point sources) in U, V, and I over 17 500 deg(2). The spectroscopic observations are expected to be highly efficient and complete for mapping galaxies over 0 < z < 1 with secure redshift measurements at spectral resolutions of R similar to 200, providing unprecedented data sets for cosmological studies. To quantitatively examine the survey potential, we develop a software tool, namely the CSST Emulator for Slitless Spectroscopy (CESS), to quickly generate simulated lD slitless spectra with limited computing resources. We introduce the architecture of CESS and the detailed process of creating simulated CSST slitless spectra. The extended light distribution of a galaxy induces the self-broadening effect on the 1D slitless spectrum. We quantify the effect using morphological parameters: Sersic index, effective radius, position angle, and axis ratio. Moreover, we also develop a module for CESS to estimate the overlap contamination rate for CSST grating observations of galaxies in galaxy clusters. Applying CESS to the high-resolution model spectra of a sample of similar to 140 million galaxies with m(z) < 21 mag selected from the Dark Energy Spectroscopic Instrument LS DR9 catalogue, we obtain the simulated CSST slitless spectra. We examine the dependence of measurement errors on different types of galaxies due to instrumental and observational effects and quantitatively investigate the redshift completeness for different environments out to z similar to 1. Our results show that the CSST spectroscopy is able to provide secure redshifts for about one-quarter of the sample galaxies.
学科主题天文学
URL标识查看原文
出版地GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
WOS关键词SIZE DISTRIBUTION ; SPACE-TELESCOPE ; GALAXIES ; REDSHIFT ; STELLAR ; CONSTRAINTS
资助项目China Manned Space Project[CMS-CSST-2021-A02]; China Manned Space Project[CMS-CSST-2021-A04]; China Manned Space Project[CMS-CSST-2021-A06]; China Manned Space Project[CMS-CSST-2021-A07]; National Key Research and Development Program of China[2023YFA1608100]; National Science Foundation of China[12288102]; National Science Foundation of China[12233005]; National Science Foundation of China[12073078]; National Science Foundation of China[11890692]; National Science Foundation of China[11833005]; National Science Foundation of China[11773063]
WOS研究方向Astronomy & Astrophysics
语种英语
出版者OXFORD UNIV PRESS
WOS记录号WOS:001156520800033
资助机构China Manned Space Project[CMS-CSST-2021-A02, CMS-CSST-2021-A04, CMS-CSST-2021-A06, CMS-CSST-2021-A07] ; National Key Research and Development Program of China[2023YFA1608100] ; National Science Foundation of China[12288102, 12233005, 12073078, 11890692, 11833005, 11773063]
版本出版稿
源URL[http://ir.ynao.ac.cn/handle/114a53/26542]  
专题云南天文台_大样本恒星演化研究组
作者单位1.Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100101, China
2.Department of Astronomy, School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China;
3.Purple Mountain Observatory, Chinese Academy of Sciences, 10 Yuanhua Road, Nanjing 210023, China;
4.National Astronomical Observatories, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100101, China;
5.School of Astronomy and Space Science, University of Chinese Academy of Sciences (UCAS), Beijing 100049, China;
6.Yunnan Observatories, Chinese Academy of Sciences, 396 Yangfangwang, Guandu District, Kunming 650216, China;
7.Tsung-Dao Lee Institute and Key Laboratory for Particle Physics, Astrophysics and Cosmology, Ministry of Education, Shanghai 201210, China;
8.School of Astronomy and Space Science, University of Science and Technology of China, Hefei 230026, China;
推荐引用方式
GB/T 7714		 Wen, Run,Zheng, Xian Zhong,Han YK,et al. CSST large-scale structure analysis pipeline: II. The CSST Emulator for Slitless Spectroscopy[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2024,528(2):2770-2783.
APA Wen, Run.,Zheng, Xian Zhong.,韩云坤.,Yang, Xiaohu.,Wang, Xin.,...&Wang, Yirong.(2024).CSST large-scale structure analysis pipeline: II. The CSST Emulator for Slitless Spectroscopy.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,528(2),2770-2783.
MLA Wen, Run,et al."CSST large-scale structure analysis pipeline: II. The CSST Emulator for Slitless Spectroscopy".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 528.2(2024):2770-2783.

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来源：云南天文台

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