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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
Source PublicationPUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC
Volume129Issue:981
AbstractIn 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.
SubtypeArticle
KeywordOpen Cluster And Association: Individual(Ngc 1039) Stars: Fundamental Parameters Stars: Luminosity Function Mass Function
WOS HeadingsScience & Technology ; Physical Sciences
Funding OrganizationNational 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
WOS KeywordSOLAR-TYPE STARS ; MASS FUNCTION ; GLOBULAR-CLUSTERS ; M34 NGC-1039 ; PHOTOMETRY ; EVOLUTION ; FIELD ; SPECTROPHOTOMETRY ; ABUNDANCES ; ROTATION
Indexed BySCI
Language英语
Funding OrganizationNational 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 Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000412899100001
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Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/20107
Collection光学天文研究部
Affiliation1.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
Recommended Citation
GB/T 7714
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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