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

doi:10.1088/1674-4527/ad3d13

YNAO OpenIR > 星系类星体研究组

	Stellar Populations of AGN-host Dwarf Galaxies Selected with Different Methods
	Li XJ(李谢瑾)1,2; Zhao YH(赵应和)1,3,4 ; Bai JM(白金明)1,4
发表期刊	RESEARCH IN ASTRONOMY AND ASTROPHYSICS
	2024-06-01
卷号	24 期号:6
DOI	10.1088/1674-4527/ad3d13
产权排序	第1完成单位
收录类别	SCI
关键词	galaxies: dwarf galaxies: active galaxies: stellar content
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.
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
项目资助者	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
语种	英语
学科领域	天文学 ; 星系与宇宙学
文章类型	Article
出版者	NATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES
出版地	20A DATUN RD, CHAOYANG, BEIJING, 100101, PEOPLES R CHINA
ISSN	1674-4527
URL	查看原文
WOS记录号	WOS:001228384600001
WOS研究方向	Astronomy & Astrophysics
WOS类目	Astronomy & Astrophysics
关键词[WOS]	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
引用统计
文献类型	期刊论文
版本	出版稿
条目标识符	http://ir.ynao.ac.cn/handle/114a53/27209
专题	星系类星体研究组南方基地中国科学院天体结构与演化重点实验室
作者单位	1.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, China; [email protected]; 2.University of Chinese Academy of Sciences, Beijing 100049, China; 3.Key Laboratory of Radio Astronomy and Technology, Chinese Academy of Sciences, Beijing 100101, China; 4.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, China
第一作者单位	中国科学院云南天文台
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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