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X-ray activity from different types of stars

文献类型：期刊论文

作者He, Lin2,3,4; Wang, Song4; Xu, Xiao-Jic2,3; Soria, Roberto5,6,7; Liu, Ji-Feng4,5,8; Li, Xiang-Dong2,3; Bai, Yu4; Bai, Zhong-Rui4; Guo, Jin-Cheng9; Qiu, Yan-Li4,5
刊名RESEARCH IN ASTRONOMY AND ASTROPHYSICS
出版日期2019-07-01
卷号19期号:7页码:16
关键词X-rays: stars stars: activity stars: late-type
ISSN号1674-4527
DOI10.1088/1674-4527/19/7/98
英文摘要X-ray emission is an important indicator of stellar activity. In this paper, we study stellar X-ray activity using the XMM-Newton and LAMOST data for different types of stars. We provide a sample including 1259 X-ray-emitting stars, of which 1090 have accurate stellar parameter estimations. Our sample size is much larger than those used in previous works. We find a bimodal distribution of the X-ray to optical flux ratio (log(fx/fv)) for G and K stars. We interpret that this bimodality is due to two subpopulations with different coronal heating rates. Furthermore, using the full widths at half maxima calculated from H alpha and H beta lines, we show that these stars in the inactive peaks have smaller rotational velocities. This is consistent with the magnetic dynamo theory that presumes stars with low rotational velocities have low levels of stellar activity. We also examine the correlation between log(fx/fv) and luminosity of the excess emission in the H alpha line, and find a tight relation between the coronal and chromospheric activity indicators.
WOS关键词ALL-SKY SURVEY ; CA-II-H ; STELLAR ATMOSPHERIC PARAMETERS ; MEDIUM-SENSITIVITY SURVEY ; CHROMOSPHERIC ACTIVITY ; CORONAL ACTIVITY ; MAGNETIC ACTIVITY ; OPTICAL IDENTIFICATIONS ; ABSOLUTE MAGNITUDES ; COMPLETE SAMPLE
资助项目National Development and Reform Commission ; National Science Foundation of China (NSFC)[11273028] ; National Science Foundation of China (NSFC)[11333004] ; National Science Foundation of China (NSFC)[11603035] ; National Science Foundation of China (NSFC)[11603038] ; National Science Foundation of China (NSFC)[11503054] ; Curtin University Senior Research Fellowship ; Strasbourg Observatory
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:000475427200009
出版者NATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES
资助机构National Development and Reform Commission ; National Development and Reform Commission ; National Science Foundation of China (NSFC) ; National Science Foundation of China (NSFC) ; Curtin University Senior Research Fellowship ; Curtin University Senior Research Fellowship ; Strasbourg Observatory ; Strasbourg Observatory ; National Development and Reform Commission ; National Development and Reform Commission ; National Science Foundation of China (NSFC) ; National Science Foundation of China (NSFC) ; Curtin University Senior Research Fellowship ; Curtin University Senior Research Fellowship ; Strasbourg Observatory ; Strasbourg Observatory ; National Development and Reform Commission ; National Development and Reform Commission ; National Science Foundation of China (NSFC) ; National Science Foundation of China (NSFC) ; Curtin University Senior Research Fellowship ; Curtin University Senior Research Fellowship ; Strasbourg Observatory ; Strasbourg Observatory ; National Development and Reform Commission ; National Development and Reform Commission ; National Science Foundation of China (NSFC) ; National Science Foundation of China (NSFC) ; Curtin University Senior Research Fellowship ; Curtin University Senior Research Fellowship ; Strasbourg Observatory ; Strasbourg Observatory
源URL[http://ir.bao.ac.cn/handle/114a11/26972]  
专题中国科学院国家天文台
通讯作者Wang, Song
作者单位1.United World Coll, Changshu 215500, Jiangsu, Peoples R China
2.Nanjing Univ, Sch Astron & Space Sci, Nanjing 210093, Jiangsu, Peoples R China
3.Nanjing Univ, Key Lab Modern Astron & Astrophys, Nanjing 210093, Jiangsu, Peoples R China
4.Chinese Acad Sci, Natl Astron Observ, Key Lab Opt Astron, Beijing 100101, Peoples R China
5.Univ Chinese Acad Sci, Coll Astron & Space Sci, Beijing 100049, Peoples R China
6.Curtin Univ, Int Ctr Radio Astron Res, GPO Box U1987, Perth, WA 6845, Australia
7.Univ Sydney, Sch Phys A28, Sydney Inst Astron, Sydney, NSW 2006, Australia
8.Wuhan Univ, WHU NAOC Joint Ctr Astron, Wuhan 430072, Hubei, Peoples R China
9.Peking Univ, Dept Astron, Beijing 100871, Peoples R China
10.Chinese Acad Sci, Natl Astron Observ, Nanjing Inst Astron Opt & Technol, Nanjing 210042, Jiangsu, Peoples R China
推荐引用方式
GB/T 7714		 He, Lin,Wang, Song,Xu, Xiao-Jic,et al. X-ray activity from different types of stars[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2019,19(7):16.
APA He, Lin.,Wang, Song.,Xu, Xiao-Jic.,Soria, Roberto.,Liu, Ji-Feng.,...&Qian, Ke-Cheng.(2019).X-ray activity from different types of stars.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,19(7),16.
MLA He, Lin,et al."X-ray activity from different types of stars".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 19.7(2019):16.

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