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Membership and Dynamical Parameters of the Open Cluster NGC 1039

文献类型：期刊论文

作者Wang, Jiaxin1,2; Zhou, Xu1; Wu, Zhenyu1,2; Ma, Jun1,2; Wang,Jiaxin; Zhou,Xu; Wu,Zhenyu; Ma,Jun
刊名PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC
出版日期2017-11-01
卷号129期号:981
关键词Open Cluster And Association: Individual(Ngc 1039) Stars: Fundamental Parameters Stars: Luminosity Function Mass Function
DOI10.1088/1538-3873/aa8baf
文献子类Article
英文摘要In this paper, we analyze the open cluster NGC 1039. This young open cluster is observed as a part of Beijing-Arizona- Taiwan-Connecticut Multicolor Sky Survey. Combining our observations with the Sloan Digital Sky Survey photometric data, we employ the Padova stellar model and the zero-age main-sequence curve to the data to derive a reddening, E(B-V) = 0.10 +/- 0.02, and a distance modulus, (m-M)(0) = 8.4 +/- 0.2, for NGC 1039. The photometric membership probabilities of stars in the region of NGC 1039 are derived using the spectral energy distribution-fitting method. According to the membership probabilities (P-SED) obtained here, 582 stars are cluster members with P-SED larger than 60%. In addition, we determine the structural parameters of NGC 1039 by fitting its radial density profile with the King model. These parameters are a core radius, R-c = 4.44 +/- 1.31 pc; a tidal radius, R-t = 13.57 +/- 4.85 pc; and a concentration parameter of C-0 = log(R-t/R-c) = 0.49 +/- 0.20. We also fit the observed mass function of NGC 1039 with masses from 0.3 M-circle dot to 1.65 M-circle dot with a power-law function Phi(m) proportional to m(alpha) to derive its slopes of mass functions of different spatial regions. The results obtained here show that the slope of the mass function of NGC 1039 is flatter in the central regions (alpha = 0.117), becomes steeper at larger radii (alpha = -2.878), and breaks at m(break) approximate to 0.80M(circle dot). In particular, for the first time, our results show that the mass segregation appears in NGC 1039.
WOS关键词SOLAR-TYPE STARS ; MASS FUNCTION ; GLOBULAR-CLUSTERS ; M34 NGC-1039 ; PHOTOMETRY ; EVOLUTION ; FIELD ; SPECTROPHOTOMETRY ; ABUNDANCES ; ROTATION
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:000412899100001
资助机构National Natural Science Foundation of China (NSFC)(11373035 ; National Natural Science Foundation of China (NSFC)(11373035 ; National Basic Research Program of China (973 Program)(2014CB845702 ; National Basic Research Program of China (973 Program)(2014CB845702 ; Chinese Academy of Sciences(114A11KYSB20160057) ; Chinese Academy of Sciences(114A11KYSB20160057) ; 11603035 ; 11603035 ; 2014CB845704 ; 2014CB845704 ; 11373033 ; 11373033 ; 2013CB834902) ; 2013CB834902) ; 11433005 ; 11433005 ; 11673027 ; 11673027 ; 11603034) ; 11603034) ; National Natural Science Foundation of China (NSFC)(11373035 ; National Natural Science Foundation of China (NSFC)(11373035 ; National Basic Research Program of China (973 Program)(2014CB845702 ; National Basic Research Program of China (973 Program)(2014CB845702 ; Chinese Academy of Sciences(114A11KYSB20160057) ; Chinese Academy of Sciences(114A11KYSB20160057) ; 11603035 ; 11603035 ; 2014CB845704 ; 2014CB845704 ; 11373033 ; 11373033 ; 2013CB834902) ; 2013CB834902) ; 11433005 ; 11433005 ; 11673027 ; 11673027 ; 11603034) ; 11603034)
源URL[http://ir.bao.ac.cn/handle/114a11/20107]  
专题国家天文台_光学天文研究部
作者单位1.Chinese Acad Sci, Natl Astron Observ, Key Lab Opt Astron, Beijing 100012, Peoples R China
2.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 101408, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Jiaxin,Zhou, Xu,Wu, Zhenyu,et al. Membership and Dynamical Parameters of the Open Cluster NGC 1039[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC,2017,129(981).
APA Wang, Jiaxin.,Zhou, Xu.,Wu, Zhenyu.,Ma, Jun.,Wang,Jiaxin.,...&Ma,Jun.(2017).Membership and Dynamical Parameters of the Open Cluster NGC 1039.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC,129(981).
MLA Wang, Jiaxin,et al."Membership and Dynamical Parameters of the Open Cluster NGC 1039".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC 129.981(2017).

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