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Membership and Dynamical Parameters of the Open Cluster NGC 1039
Wang, Jiaxin1,2; Ma, Jun1,2; Wu, Zhenyu1,2; Zhou, Xu1
2017-11-01
发表期刊PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC
卷号129期号:981
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.
文章类型Article
关键词Open Cluster And Association: Individual(Ngc 1039) Stars: Fundamental Parameters Stars: Luminosity Function Mass Function
WOS标题词Science & Technology ; Physical Sciences
资助者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)
DOI10.1088/1538-3873/aa8baf
关键词[WOS]SOLAR-TYPE STARS ; MASS FUNCTION ; GLOBULAR-CLUSTERS ; M34 NGC-1039 ; PHOTOMETRY ; EVOLUTION ; FIELD ; SPECTROPHOTOMETRY ; ABUNDANCES ; ROTATION
收录类别SCI
语种英语
资助者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)
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
WOS记录号WOS:000412899100001
引用统计
文献类型期刊论文
条目标识符http://ir.bao.ac.cn/handle/114a11/20107
专题光学天文研究部
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
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Wang, Jiaxin,Ma, Jun,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,Ma, Jun,Wu, Zhenyu,&Zhou, Xu.(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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