Radial stellar populations of AGN-host dwarf galaxies in SDSS-IV MaNGA survey | |
Cai W(蔡伟)2,3,4; Zhao YH(赵应和)1,2,4; Bai JM(白金明)1,2,4 | |
刊名 | RESEARCH IN ASTRONOMY AND ASTROPHYSICS |
2021-10 | |
卷号 | 21期号:8 |
关键词 | galaxies dwarf galaxies active galaxies galaxies stellar content |
ISSN号 | 1674-4527 |
DOI | 10.1088/1674-4527/21/8/204 |
产权排序 | 第1完成单位 |
文献子类 | Article |
英文摘要 | Based on MaNGA integral field unit (IFU) spectroscopy we search 60 AGN candidates, which have stellar masses M (*) <= 5 x 10(9) M (circle dot) and show AGN ionization signatures in the BPT diagram. For these AGN candidates, we derive the spatially resolved stellar population with the stellar population synthesis code STARLIGHT and measure the gradients of the mean stellar age and metallicity. We find that the gradients of mean stellar age (metallicity) of individual AGN-host dwarfs are diverse in 0-0.5 Re, 0.5-1 Re and 0-1 Re. However, the overall behavior of the mean stellar age (metallicity) profiles tend to be flat, as the median values of the gradients are close to zero. We further study the overall behavior of the mean stellar age (metallicity) by plotting the co-added radial profiles for the AGN sample and compare with a control sample with similar stellar mass. We find that the median values of light-weighted mean stellar ages of the AGN sample are as old as 2-3 Gyr within 2 Re,which are about 4-7 times older than those of the control sample. Meanwhile, most of the AGN candidates are low-level AGNs, as only eight sources have L ([O iii]) > 10(39.5) erg s(-1). Hence, the AGNs in dwarf galaxies might accelerate the evolution of galaxies by accelerating the consumption of the gas, resulting in an overall quenching of the dwarf galaxies, and the AGNs also become weak due to the lack of gas. The median values of mass-weighted mean stellar age of both samples within 2 Re are similar and as old as about 10 Gyr, indicating that the stellar mass is mainly contributed by old stellar populations. The gradients of co-added mean stellar metallicity for both samples tend to be negative but close to zero, and the similar mean stellar metallicity profiles for both samples indicate that the chemical evolution of the host galaxy is not strongly influenced by the AGN. |
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, 100012, PEOPLES R CHINA |
资助项目 | National Key R&D Program of China[2017YFA0402704] ; National Natural Science Foundation of China (NSFC)National Natural Science Foundation of China (NSFC)[11991051] ; National Natural Science Foundation of China (NSFC)National Natural Science Foundation of China (NSFC)[11421303] ; National Natural Science Foundation of China (NSFC)National Natural Science Foundation of China (NSFC)[11973039] ; CAS Pioneer Hundred Talents Program ; Brazilian agency CNPqConselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPQ) ; Brazilian agency CAPESCoordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES) ; Brazilian agency FAPESPFundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) ; France-Brazil CAPES/Cofecub programCoordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES) ; Alfred P. Sloan FoundationAlfred P. Sloan Foundation ; US Department of Energy Office of ScienceUnited States Department of Energy (DOE) ; Carnegie Institution for Science, Carnegie Mellon University ; Chilean Participation Group ; French Participation Group ; Harvard-Smithsonian Center for Astrophysics, Instituto de Astrofsica de Canarias ; Johns Hopkins University, Kavli Institute for the Physics and Mathematics of the Universe (IPMU)/University of Tokyo ; Lawrence Berkeley National LaboratoryUnited States Department of Energy (DOE) ; Leibniz Institut fur Astrophysik Potsdam (AIP) ; Max-Planck-Institut fur Astronomie (MPIA Heidelberg) ; Max-Planck-Institut fur Astrophysik (MPA Garching) ; Max-Planck-Institut fur Extraterrestrische Physik (MPE) ; National Astronomical Observatory of China ; New Mexico State University ; New York University ; University of Notre Dame ; Observatrio Nacional/MCTI ; Ohio State UniversityOhio State University ; Pennsylvania State University ; Shanghai Astronomical Observatory ; United Kingdom Participation Group ; Universidad Nacional Autonoma de MexicoUniversidad Nacional Autonoma de Mexico ; University of Arizona ; University of Colorado Boulder ; University of Oxford ; University of Portsmouth ; University of Utah ; University of Virginia ; University of WashingtonUniversity of Washington ; University of Wisconsin ; Vanderbilt University ; Yale University |
WOS关键词 | DIGITAL SKY SURVEY ; SUPERMASSIVE BLACK-HOLES ; ACTIVE GALACTIC NUCLEI ; STAR-FORMING GALAXIES ; ENVIRONMENTAL DEPENDENCE ; SEMIEMPIRICAL ANALYSIS ; MASS ; FEEDBACK ; EMISSION ; CLASSIFICATION |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
出版者 | NATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES |
WOS记录号 | WOS:000711674100001 |
资助机构 | National Key R&D Program of China[2017YFA0402704] ; National Natural Science Foundation of China (NSFC)National Natural Science Foundation of China (NSFC)[11991051, 11421303, 11973039] ; CAS Pioneer Hundred Talents Program ; Brazilian agency CNPqConselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPQ) ; Brazilian agency CAPESCoordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES) ; Brazilian agency FAPESPFundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) ; France-Brazil CAPES/Cofecub programCoordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES) ; Alfred P. Sloan FoundationAlfred P. Sloan Foundation ; US Department of Energy Office of ScienceUnited States Department of Energy (DOE) ; Carnegie Institution for Science, Carnegie Mellon University ; Chilean Participation Group ; French Participation Group ; Harvard-Smithsonian Center for Astrophysics, Instituto de Astrofsica de Canarias ; Johns Hopkins University, Kavli Institute for the Physics and Mathematics of the Universe (IPMU)/University of Tokyo ; Lawrence Berkeley National LaboratoryUnited States Department of Energy (DOE) ; Leibniz Institut fur Astrophysik Potsdam (AIP) ; Max-Planck-Institut fur Astronomie (MPIA Heidelberg) ; Max-Planck-Institut fur Astrophysik (MPA Garching) ; Max-Planck-Institut fur Extraterrestrische Physik (MPE) ; National Astronomical Observatory of China ; New Mexico State University ; New York University ; University of Notre Dame ; Observatrio Nacional/MCTI ; Ohio State UniversityOhio State University ; Pennsylvania State University ; Shanghai Astronomical Observatory ; United Kingdom Participation Group ; Universidad Nacional Autonoma de MexicoUniversidad Nacional Autonoma de Mexico ; University of Arizona ; University of Colorado Boulder ; University of Oxford ; University of Portsmouth ; University of Utah ; University of Virginia ; University of WashingtonUniversity of Washington ; University of Wisconsin ; Vanderbilt University ; Yale University |
内容类型 | 期刊论文 |
版本 | 出版稿 |
源URL | [http://ir.ynao.ac.cn/handle/114a53/24643] |
专题 | 云南天文台_丽江天文观测站(南方基地) |
通讯作者 | Zhao YH(赵应和) |
作者单位 | 1.Center for Astronomical Mega-Science, Chinese Academy of Sciences, Beijing 100101, China 2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650216, China; 3.University of Chinese Academy of Sciences, Beijing 100049, China; 4.Yunnan Observatories, Chinese Academy of Sciences, Kunming 652016, China;; |
推荐引用方式 GB/T 7714 | Cai W,Zhao YH,Bai JM. Radial stellar populations of AGN-host dwarf galaxies in SDSS-IV MaNGA survey[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2021,21(8). |
APA | Cai W,Zhao YH,&Bai JM.(2021).Radial stellar populations of AGN-host dwarf galaxies in SDSS-IV MaNGA survey.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,21(8). |
MLA | Cai W,et al."Radial stellar populations of AGN-host dwarf galaxies in SDSS-IV MaNGA survey".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 21.8(2021). |
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