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Stellar Populations of a Sample of Optically Selected AGN-host Dwarf Galaxies
Cai W(蔡伟)1,2,3; Zhao YH(赵应和)1,3,4; Zhang, Hong-Xin5; Bai JM(白金明)1,3,4; Liu HT(刘洪涛)1,3,4
发表期刊ASTROPHYSICAL JOURNAL
2020-11-01
卷号903期号:1页码:12
DOI10.3847/1538-4357/abb81c
产权排序第1完成单位
收录类别SCI
关键词Galaxies Dwarf galaxies Active galaxies Galaxy stellar content
摘要

In this paper we present our studies on the stellar populations and star formation histories (SFHs) for the Reines et al. sample of 136 dwarf galaxies that host active galactic nuclei (AGNs), selected from the Sloan Digital Sky Survey Data Release 8. We derive stellar populations and reconstruct SFHs for these AGN-host dwarfs using the stellar population synthesis code STARLIGHT. Our results suggest that these AGN-host dwarfs have assembled their stellar masses within a narrow period of time with the stellar mass-weighted ages in the range of 10(9) -10(10) yr, but show a wide diversity of SFHs with the luminosity-weighted stellar ages in the range of 10(7)-10(10) yr. The old population (t.>.109 yr) contributes most to the galaxy light for the majority of the sample; the young population (t.<.10(8) yr) also appears in significant but widely varying fractions, while the intermediate-age population (108.<.t.<.10(9) yr) in general contributes less to the optical continuum at 4020 angstrom. We also find that these dwarfs follow a similar mass-metallicity relation to normal star-forming galaxies, indicating that AGNs have little effect on the chemical evolution of the host galaxy. We further investigate the relation between the derived SFHs and morphology of the host galaxy, and find no correlation. Comparing the SFHs with the luminosity of the [OIII] lambda 5007 line (L-[O III]), we find a mild correlation exists when L-[O III] > 10(39) erg.s(-1), indicating a physical connection between star formation and AGN activities in these dwarf galaxies.

资助项目National Key R&D Program of China[2017YFA0402704] ; Natural Science Foundation of China (NSFC)[11991051] ; Natural Science Foundation of China (NSFC)[11421303] ; Natural Science Foundation of China (NSFC)[11973039] ; CAS Pioneer Hundred Talents Program ; Brazilian agency CNPq ; Brazilian agency CAPES ; Brazilian agency 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 ; Ohio State University ; Pennsylvania State University ; University of Portsmouth ; Princeton University ; Spanish Participation Group ; University of Tokyo ; University of Utah ; Vanderbilt University ; University of Virginia ; University of Washington ; Yale University
项目资助者National Key R&D Program of China[2017YFA0402704] ; Natural Science Foundation of China (NSFC)[11991051, 11421303, 11973039] ; CAS Pioneer Hundred Talents Program ; Brazilian agency CNPq ; Brazilian agency CAPES ; Brazilian agency 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 ; Ohio State University ; Pennsylvania State University ; University of Portsmouth ; Princeton University ; Spanish Participation Group ; University of Tokyo ; University of Utah ; Vanderbilt University ; University of Virginia ; University of Washington ; Yale University
语种英语
学科领域天文学 ; 天体物理学 ; 高能天体物理学 ; 星系与宇宙学
学科门类理学 ; 理学::天文学
文章类型Article
出版者IOP PUBLISHING LTD
出版地TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN0004-637X
URL查看原文
WOS记录号WOS:000584293300001
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]SDSS-IV MANGA ; DIGITAL SKY SURVEY ; STAR-FORMATION HISTORIES ; SUPERMASSIVE BLACK-HOLES ; SEMIEMPIRICAL ANALYSIS ; DUST EXTINCTION ; MASS ; FEEDBACK ; ULTRAVIOLET ; EMISSION
引用统计
被引频次:7[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/23856
专题南方基地
中国科学院天体结构与演化重点实验室
通讯作者Cai W(蔡伟)
作者单位1.Yunnan Observatories, Chinese Academy of Sciences, Kunming 652016, People's Republic of China
2.University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
3.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650216, People's Republic of China
4.Center for Astronomical Mega-Science, Chinese Academy of Sciences, Beijing 100012, People's Republic of China
5.CAS Key Laboratory for Research in Galaxies and Cosmology, Department of Astronomy, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China
第一作者单位中国科学院云南天文台
通讯作者单位中国科学院云南天文台
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Cai W,Zhao YH,Zhang, Hong-Xin,et al. Stellar Populations of a Sample of Optically Selected AGN-host Dwarf Galaxies[J]. ASTROPHYSICAL JOURNAL,2020,903(1):12.
APA Cai W,Zhao YH,Zhang, Hong-Xin,Bai JM,&Liu HT.(2020).Stellar Populations of a Sample of Optically Selected AGN-host Dwarf Galaxies.ASTROPHYSICAL JOURNAL,903(1),12.
MLA Cai W,et al."Stellar Populations of a Sample of Optically Selected AGN-host Dwarf Galaxies".ASTROPHYSICAL JOURNAL 903.1(2020):12.
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