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Stellar Populations of AGN-host Dwarf Galaxies Selected with Different Methods

文献类型：期刊论文

作者Li XJ(李谢瑾)3,4; Zhao YH(赵应和)1,2,4; Bai JM(白金明)1,4
刊名RESEARCH IN ASTRONOMY AND ASTROPHYSICS
出版日期2024-06-01
卷号24期号:6
关键词galaxies: dwarf galaxies: active galaxies: stellar content
ISSN号1674-4527
DOI10.1088/1674-4527/ad3d13
产权排序第1完成单位
文献子类Article
英文摘要In this paper we investigate the stellar populations and star formation histories of 235 active galactic nucleus (AGN)-host dwarf galaxies, consisting of four samples identified separately with different methods (i.e., radio, X-ray, mid-IR and variability), utilizing the synthesis code STARLIGHT and spectra from the Sloan Digital Sky Survey Data Release 8. Our results show that the variability sample is the oldest, while the mid-IR sample is the youngest, for which the luminosity at 4020 & Aring; is dominated (>50%) by the young population (t < 10(8) yr). The light-weighted mean stellar age of the whole sample is in general about 0.7 dex younger than the optical sample studied in Cai et al. We compare the population results between fitting models with and without a power-law (PL) component and find that the neglect of a PL component would lead to an under- and over-estimation by 0.2 and 0.1 dex for the light- and mass-weighted mean stellar age, respectively, for our sample of dwarf galaxies, which has a mean fractional contribution of similar to 16% from the AGN. In addition, we obtain further evidence for a possible suppression of star formation in the host galaxy by the central AGN. We also find that there exists an anti-correlation between the extinction-corrected [O iii] luminosity and light-weighted mean stellar age, confirming our previous finding that there is a physical connection between AGN and star-forming activities in AGN-host dwarfs.
学科主题天文学 ; 星系与宇宙学
URL标识查看原文
出版地20A DATUN RD, CHAOYANG, BEIJING, 100101, PEOPLES R CHINA
WOS关键词STAR-FORMATION HISTORIES ; ACTIVE GALACTIC NUCLEI ; SDSS-IV MANGA ; BLACK-HOLE ACCRETION ; SKY SURVEY GALAXIES ; ACS LCID PROJECT ; X-RAY-EMISSION ; SEMIEMPIRICAL ANALYSIS ; METALLICITY GRADIENTS ; SYSTEMATIC ANALYSIS
资助项目China Manned Space Project[CMS-CSST-2021-A06]; National Key R&D Program of China[2021YFA1600404]; National Natural Science Foundation of China (NSFC)[12173079]; National Natural Science Foundation of China (NSFC)[11991051]; CNPq; CAPES; FAPESP; France-Brazil CAPES/ Cofecub program; Alfred P. Sloan Foundation; National Science Foundation; U.S. Department of Energy Office of Science; University of Arizona; Brazilian Participation Group; Brookhaven National Laboratory; Carnegie Mellon University, University of Florida; French Participation Group; German Participation Group; Harvard University; Instituto de Astrofisica de Canarias; Michigan State/Notre Dame/JINA Participation Group; Johns Hopkins University; Lawrence Berkeley National Laboratory; Max Planck Institute for Astrophysics; Max Planck Institute for Extraterrestrial Physics, New Mexico State University, New York University; Pennsylvania State University, University of Portsmouth; Princeton University; Spanish Participation Group, University of Tokyo, University of Utah; Yale University
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:001228384600001
出版者NATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES
资助机构China Manned Space Project[CMS-CSST-2021-A06] ; National Key R&D Program of China[2021YFA1600404] ; National Natural Science Foundation of China (NSFC)[12173079, 11991051] ; CNPq ; CAPES ; FAPESP ; France-Brazil CAPES/ Cofecub program ; Alfred P. Sloan Foundation ; National Science Foundation ; U.S. Department of Energy Office of Science ; University of Arizona ; Brazilian Participation Group ; Brookhaven National Laboratory ; Carnegie Mellon University, University of Florida ; French Participation Group ; German Participation Group ; Harvard University ; Instituto de Astrofisica de Canarias ; Michigan State/Notre Dame/JINA Participation Group ; Johns Hopkins University ; Lawrence Berkeley National Laboratory ; Max Planck Institute for Astrophysics ; Max Planck Institute for Extraterrestrial Physics, New Mexico State University, New York University ; Pennsylvania State University, University of Portsmouth ; Princeton University ; Spanish Participation Group, University of Tokyo, University of Utah ; Yale University
版本出版稿
源URL[http://ir.ynao.ac.cn/handle/114a53/27209]  
专题星系类星体研究组
云南天文台_丽江天文观测站（南方基地）
云南天文台_中国科学院天体结构与演化重点实验室
作者单位1.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, China
2.Key Laboratory of Radio Astronomy and Technology, Chinese Academy of Sciences, Beijing 100101, China;
3.University of Chinese Academy of Sciences, Beijing 100049, China;
4.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, China; zhaoyinghe@ynao.ac.cn;
推荐引用方式
GB/T 7714		 Li XJ,Zhao YH,Bai JM. Stellar Populations of AGN-host Dwarf Galaxies Selected with Different Methods[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2024,24(6).
APA 李谢瑾,赵应和,&白金明.(2024).Stellar Populations of AGN-host Dwarf Galaxies Selected with Different Methods.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,24(6).
MLA 李谢瑾,et al."Stellar Populations of AGN-host Dwarf Galaxies Selected with Different Methods".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 24.6(2024).

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来源：云南天文台

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