BayeSED-GALAXIES. II. Bayesian Full Spectrum Analysis of Galaxies and Application in the CSST Wide-field Slitless Spectroscopy Survey
文献类型：期刊论文
| 作者 | Han YK(韩云坤)10,11; Zheng, Xian Zhong12; Yang, Xiaohu12,15; Wen, Run12,15; Liu, F. S.7,16,17; Zou, Hu7,18; Bai JM(白金明)10,11; Zhao YH(赵应和)1,20; Fan, Lulu3,4,5,6; Zhang FH(张奉辉)10,11 |
| 刊名 | ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
 |
| 出版日期 | 2026-04-01 |
| 卷号 | 283期号:2 |
| ISSN号 | 0067-0049 |
| DOI | 10.3847/1538-4365/ae497e |
| 产权排序 | 第1完成单位 |
| 文献子类 | Article |
| 英文摘要 | The China Space Station Telescope (CSST) will simultaneously conduct wide-field multiband photometric imaging and spectroscopic slitless surveys, poised to significantly advance cosmology and galaxy evolution research. Meeting CSST's cosmological goals requires precise redshifts (sigma NMAD less than or similar to 0.002-0.005) from its low-resolution (R similar to 200) and potentially blended slitless spectra. We present BayeSED3, extended for Bayesian full spectrum analysis, incorporating detailed nebular emission modeling (via CLOUDY) and a robust Bayesian treatment of the model scaling factor, enhancing reliability over optimization techniques for low signal-to-noise ratio (SNR) spectra. Validated on realistic mock data generated with the CSST Emulator for Slitless Spectroscopy (CESS; median SNR of 1.65, instrumental and self-blending effects included), our method achieves excellent redshift precision with three-band (GU+GV+GI) spectroscopy, exceeding requirements: sigma NMAD = 0.0008 (similar to 80% success rate) for star-forming galaxies and sigma NMAD = 0.0015 (similar to 50% success rate) for quiescent galaxies. Stellar mass (M*; sigma NMAD approximate to 0.015 dex for star-forming galaxies, approximate to 0.016 dex for quiescent galaxies) and star formation rate (sigma NMAD approximate to 0.05 dex for star-forming galaxies, especially at SNR > 1) can also be reliably recovered. While spectral self-blending increases scatter (sigma NMAD) by greater than or similar to 30%, combining spectroscopy with CSST's seven-band photometry crucially improves accuracy, especially for quiescent galaxies and in data-limited scenarios. Combining photometry with single-band spectroscopy leads to reasonable redshift estimation. While GU+photometry shows limited performance, GI+photometry yields success rates of >60% (for star-forming galaxies) and >40% (for quiescent galaxies) with sigma NMAD less than or similar to 0.002, and GV+photometry achieves success rates of >35% (for star-forming galaxies) and similar to 40% (for quiescent galaxies) at similar precision. Our comprehensive Bayesian framework thus provides a robust tool for precise galaxy characterization, enhancing scientific returns from CSST's unique dataset despite inherent slitless spectroscopy challenges. |
| 学科主题 | 天文学 ; 恒星与银河系 |
| URL标识 | 查看原文 |
| 出版地 | No.2 The Distillery, Glassfields, Avon Street, Bristol, ENGLAND |
| WOS关键词 | STELLAR POPULATION SYNTHESIS ; STAR-FORMATION HISTORY ; DIGITAL SKY SURVEY ; ENERGY-DISTRIBUTION ; REDSHIFT ; TELESCOPE ; EMISSION ; PIPELINE ; ASTROPY ; I. |
| 资助项目 | National Key Research and Development Program of China[2021YFA1600401]; National Key Research and Development Program of China[2021YFA1600404]; National Key Research and Development Program of China[2021YFA1600400]; National Key Research and Development Program of China[2023YFA1608100]; National Key Research and Development Program of China[2023YFA1607804]; National Key Research and Development Program of China[2023YFA1607800]; National Science Foundation of China (NSFC)[11773063]; National Science Foundation of China (NSFC)[12233005]; National Science Foundation of China (NSFC)[12288102]; National Science Foundation of China (NSFC)[12173037]; National Science Foundation of China (NSFC)[12233008]; China Manned Space Program[CMS-CSST-2025-A08]; China Manned Space Program[CMS-CSST-2025-A20]; China Manned Space Program[CMS-CSST-2025-A04]; China Manned Space Program[CMS-CSST-2025-A06]; Office of Science and Technology, Shanghai Municipal Government[24DX1400100]; Office of Science and Technology, Shanghai Municipal Government[ZJ2023-ZD-001]; National Astronomical Observatories, Chinese Academy of Sciences (CAS)[E4TG2001]; New Cornerstone Science Foundation through the XPLORER PRIZE; International Centre of Supernovae (ICESUN), Yunnan Key Laboratory of Supernova Research[202505AV340004]; Light of West China program of the CAS; Yunnan Ten Thousand Talents Plan Young & Elite Talents Project,; Natural Science Foundation of Yunnan Province[202201BC070003]; PHOENIX Supercomputing Platform; Yunnan Revitalization Talent Support Program |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001722062300001 |
| 出版者 | IOP Publishing Ltd |
| 资助机构 | National Key Research and Development Program of China[2021YFA1600401, 2021YFA1600404, 2021YFA1600400, 2023YFA1608100, 2023YFA1607804, 2023YFA1607800] ; National Science Foundation of China (NSFC)[11773063, 12233005, 12288102, 12173037, 12233008] ; China Manned Space Program[CMS-CSST-2025-A08, CMS-CSST-2025-A20, CMS-CSST-2025-A04, CMS-CSST-2025-A06] ; Office of Science and Technology, Shanghai Municipal Government[24DX1400100, ZJ2023-ZD-001] ; National Astronomical Observatories, Chinese Academy of Sciences (CAS)[E4TG2001] ; New Cornerstone Science Foundation through the XPLORER PRIZE ; International Centre of Supernovae (ICESUN), Yunnan Key Laboratory of Supernova Research[202505AV340004] ; Light of West China program of the CAS ; Yunnan Ten Thousand Talents Plan Young & Elite Talents Project, ; Natural Science Foundation of Yunnan Province[202201BC070003] ; PHOENIX Supercomputing Platform ; Yunnan Revitalization Talent Support Program |
| 版本 | 出版稿 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/29068]  |
| 专题 | 云南天文台_大样本恒星演化研究组 |
| 通讯作者 | Han YK(韩云坤) |
| 作者单位 | 1.Yunnan Observatories, Chinese Academy of Sciences, 396 Yangfangwang, Guandu District, Kunming 650216, People’s Republic of China; 2.Shaanxi Key Laboratory of Space Extreme Detection, Xidian University, Xi’an 710126, People’s Republic of China 3.Department of Astronomy, University of Science and Technology of China, Hefei 230026, People’s Republic of China; 4.School of Astronomy and Space Science, University of Science and Technology of China, Hefei 230026, People’s Republic of China; 5.Deep Space Exploration Laboratory, Hefei 230088, People’s Republic of China; 6.College of Physics, Guizhou University, Guiyang 550025, People’s Republic of China; 7.Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, People’s Republic of China; 8.Shanghai Astronomical Observatory, Chinese Academy of Sciences, 80 Nandan Road, Shanghai 200030, People’s Republic of China; 9.University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China; 10.International Centre of Supernovae (ICESUN), Yunnan Key Laboratory of Supernova Research, Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, People’s Republic of China; hanyk@ynao.ac.cn; |
| 推荐引用方式 GB/T 7714 | Han YK,Zheng, Xian Zhong,Yang, Xiaohu,et al. BayeSED-GALAXIES. II. Bayesian Full Spectrum Analysis of Galaxies and Application in the CSST Wide-field Slitless Spectroscopy Survey[J]. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,2026,283(2). |
| APA | 韩云坤.,Zheng, Xian Zhong.,Yang, Xiaohu.,Wen, Run.,Liu, F. S..,...&韩占文.(2026).BayeSED-GALAXIES. II. Bayesian Full Spectrum Analysis of Galaxies and Application in the CSST Wide-field Slitless Spectroscopy Survey.ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,283(2). |
| MLA | 韩云坤,et al."BayeSED-GALAXIES. II. Bayesian Full Spectrum Analysis of Galaxies and Application in the CSST Wide-field Slitless Spectroscopy Survey".ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES 283.2(2026). |
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来源：云南天文台
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