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Balmer Decrement and IRX Break in Tracing Dust Attenuation at Scales of Individual Star-forming Regions in NGC 628

文献类型：期刊论文

作者Qiao, Man5,6; Liu, Mingfeng4; Lyu, Zongfei5,6; Liu, Shuang5,6; Yang, Chao5,6; Shi, Dongdong3; An FX(安芳霞)2; Pan, Zhizheng6; Liu, Wenhao6; Liu, Binyang6
刊名RESEARCH IN ASTRONOMY AND ASTROPHYSICS
出版日期2025-08-01
卷号25期号:8
关键词(ISM:) dust, extinction galaxies: ISM galaxies: individual (NGC 628) galaxies: star formation
ISSN号1674-4527
DOI10.1088/1674-4527/addf03
产权排序第5完成单位
文献子类Article
英文摘要We investigate the relationships between infrared excess (IRX = L-IR/L-UV) and Balmer decrement (H alpha/H beta) as indicators of dust attenuation for 609 H ii regions at scales of similar to 50-200 pc in NGC 628, utilizing data from AstroSat, the James Webb Space Telescope (JWST) and Multi Unit Spectroscopic Explorer. Our findings indicate that about three-fifths of the sample H ii regions reside within the regime occupied by local star-forming galaxies (SFGs) along the dust attenuation correlation described by their corresponding color excess parameters E(B - V)(IRX) = 0.51 E(B - V)(H alpha/H beta). Nearly 27% of the sample exhibits E(B - V)(IRX) > E(B - V)(H alpha/H beta), while a small fraction (similar to 13%) displays significantly lower E(B - V)(IRX) compared to E(B - V)(H alpha/H beta). These results suggest that the correlation between the two dust attenuation indicators no longer holds for spatially resolved H ii regions. Furthermore, the ratio of E(B - V)(IRX) to E(B - V)(H alpha/H beta) remains unaffected by various physical parameters of the H ii regions, including star formation rate (SFR), SFR surface density, infrared luminosity (L-IR), L-IR surface density, stellar mass, gas-phase metallicity, circularized radius, and the distance to the galactic center. We argue that the ratio is primarily influenced by the evolution of the surrounding interstellar medium of the star-forming regions, transitioning from an early dense and thick phase to the late blown-away stage.
学科主题天文学 ; 星系与宇宙学
URL标识查看原文
出版地TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
WOS关键词BETA RELATION ; INTERSTELLAR DUST ; UNIVERSAL RELATION ; GALAXIES ; METALLICITY ; ULTRAVIOLET ; STELLAR ; JWST ; EVOLUTION ; MASS
资助项目National Key Research and Development Program of China[2023YFA1608100]; National Science Foundation of China (NSFC)[12233005]; National Science Foundation of China (NSFC)[12073078]; National Science Foundation of China (NSFC)[12173088]; National Science Foundation of China (NSFC)[12303015]; China Manned Space Program[CMS-CSST-2025-A20]; China Manned Space Program[CMS-CSST-2025-A08]; Scientific Research Foundation for High-level Talents of Anhui University of Science and Technology[2024yjrc104]; National Science Foundation of Jiangsu Province[BK20231106]; China Manned Space Project; STCSM[24DX1400100]
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:001521042300001
出版者IOP Publishing Ltd
资助机构National Key Research and Development Program of China[2023YFA1608100] ; National Science Foundation of China (NSFC)[12233005, 12073078, 12173088, 12303015] ; China Manned Space Program[CMS-CSST-2025-A20, CMS-CSST-2025-A08] ; Scientific Research Foundation for High-level Talents of Anhui University of Science and Technology[2024yjrc104] ; National Science Foundation of Jiangsu Province[BK20231106] ; China Manned Space Project ; STCSM[24DX1400100]
版本出版稿
源URL[http://ir.ynao.ac.cn/handle/114a53/28390]  
专题星系类星体研究组
通讯作者Zheng, Xianzhong
作者单位1.Tsung-Dao Lee Institute and State Key Laboratory for Dark Matter Physics, Shanghai Jiao Tong University, Shanghai 201210, China
2.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, China;
3.Center for Fundamental Physics, School of Mechanics and Optoelectronic Physics, Anhui University of Science and Technology, Huainan 232001, China;
4.Department of Physics and Institute of Theoretical Physics, Nanjing Normal University, Nanjing 210023, China;
5.School of Astronomy and Space Science, University of Science and Technology of China, Hefei 230026, China;
6.Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210023, China;
推荐引用方式
GB/T 7714		 Qiao, Man,Liu, Mingfeng,Lyu, Zongfei,et al. Balmer Decrement and IRX Break in Tracing Dust Attenuation at Scales of Individual Star-forming Regions in NGC 628[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2025,25(8).
APA Qiao, Man.,Liu, Mingfeng.,Lyu, Zongfei.,Liu, Shuang.,Yang, Chao.,...&Zheng, Xianzhong.(2025).Balmer Decrement and IRX Break in Tracing Dust Attenuation at Scales of Individual Star-forming Regions in NGC 628.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,25(8).
MLA Qiao, Man,et al."Balmer Decrement and IRX Break in Tracing Dust Attenuation at Scales of Individual Star-forming Regions in NGC 628".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 25.8(2025).

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来源：云南天文台

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