Stellar population analysis on the stacked spectra of double-peaked emission-line galaxies

doi:10.1088/1674-4527/19/9/126

CORC > 国家天文台 > 中国科学院国家天文台

	Stellar population analysis on the stacked spectra of double-peaked emission-line galaxies
	Wang, Meng-Xin 1,2; Luo, A-Li 1,2,3
刊名	RESEARCH IN ASTRONOMY AND ASTROPHYSICS
	2019-09-01
卷号	19 期号:9 页码:18
关键词	galaxies: evolution galaxies: stellar content
ISSN号	1674-4527
DOI	10.1088/1674-4527/19/9/126
英文摘要	Double-peaked emission-line galaxies have long been perceived as objects related to merging galaxies or other phenomena with disturbed dynamical activities, such as outflows and disk rotation. In order to find the connection between the unique activities happening in these objects and their stellar population physics, we study the stellar populations of the stacked spectra drawn from double-peaked emission-line galaxies in the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) Data Release 4 (DR4) and the Sloan Digital Sky Survey (SDSS) Data Release 7 (DR7) databases. We group the selected double-peaked emission-line objects into 10 different types of pairs based on the Baldwin-Phillips-Terlevich (BPT) diagnosis for each pair of blueshifted and redshifted components, and then stack the spectra of each group for analysis. The software STARLIGHT is employed to fit each stacked spectrum, and the contributions of stars at different ages and metallicities are quantified for subsequent comparative study and analysis. To highlight the commonality and uniqueness in these double-peaked emitting objects, we compare the population synthesis results of the stacked spectra of double-peaked emission-line galaxies with those of their counterpart reference samples displaying single-peaked emission features. The reference samples are also selected from the LAMOST DR4 and SDSS DR7 databases. From the comparison results, we confirm the strong correlations between stellar populations and their spectral classes, and find that the double-peaked emitting phenomenon is more likely to occur in an 'older' stellar environment and the subgroups hosting different BPT components will show an obvious heterogeneous star formation history.
资助项目	National Natural Science Foundation of China (NSFC)[11603042] ; China Scholarship Council ; Brazilian agency CNPq ; Brazilian agency CAPES ; Brazilian agency FAPESP ; FranceBrazil CAPES/Cofecub program
WOS关键词	ACTIVE-GALACTIC-NUCLEI ; DIGITAL SKY SURVEY ; EVOLUTIONARY SYNTHESIS ; SAURON PROJECT ; HOST GALAXIES ; NARROW LINES ; DATA RELEASE ; BLACK-HOLES ; CLASSIFICATION ; RESOLUTION
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:000485147000005
资助机构	National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; China Scholarship Council ; China Scholarship Council ; Brazilian agency CNPq ; Brazilian agency CNPq ; Brazilian agency CAPES ; Brazilian agency CAPES ; Brazilian agency FAPESP ; Brazilian agency FAPESP ; FranceBrazil CAPES/Cofecub program ; FranceBrazil CAPES/Cofecub program ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; China Scholarship Council ; China Scholarship Council ; Brazilian agency CNPq ; Brazilian agency CNPq ; Brazilian agency CAPES ; Brazilian agency CAPES ; Brazilian agency FAPESP ; Brazilian agency FAPESP ; FranceBrazil CAPES/Cofecub program ; FranceBrazil CAPES/Cofecub program ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; China Scholarship Council ; China Scholarship Council ; Brazilian agency CNPq ; Brazilian agency CNPq ; Brazilian agency CAPES ; Brazilian agency CAPES ; Brazilian agency FAPESP ; Brazilian agency FAPESP ; FranceBrazil CAPES/Cofecub program ; FranceBrazil CAPES/Cofecub program ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; China Scholarship Council ; China Scholarship Council ; Brazilian agency CNPq ; Brazilian agency CNPq ; Brazilian agency CAPES ; Brazilian agency CAPES ; Brazilian agency FAPESP ; Brazilian agency FAPESP ; FranceBrazil CAPES/Cofecub program ; FranceBrazil CAPES/Cofecub program
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/27746]
专题	中国科学院国家天文台
通讯作者	Luo, A-Li
作者单位	1.Chinese Acad Sci, Natl Astron Observ, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Univ Delaware, Dept Phys & Astron, Newark, DE 19716 USA
推荐引用方式 GB/T 7714	Wang, Meng-Xin,Luo, A-Li. Stellar population analysis on the stacked spectra of double-peaked emission-line galaxies[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2019,19(9):18.
APA	Wang, Meng-Xin,&Luo, A-Li.(2019).Stellar population analysis on the stacked spectra of double-peaked emission-line galaxies.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,19(9),18.
MLA	Wang, Meng-Xin,et al."Stellar population analysis on the stacked spectra of double-peaked emission-line galaxies".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 19.9(2019):18.