典型文献
Discovery of Extended Structure Around Open Cluster COIN-Gaia 13 Based on Gaia EDR3
文献摘要：
COIN-Gaia 13 is a newly discovered open cluster revealed by Gaia DR2 data.It is a nearby open cluster with a distance of about 513 pc.Combined with the five-dimensional astrometric data of Gaia EDR3 with higher accuracy,we use the membership assignment algorithm(pyUPMASK)to determine the membership of COIN-Gaia 13 in a large extended spatial region.The cluster has 478 identified candidate members.After obtaining reliable cluster members,we further study its basic properties and spatial distribution.Our results show that there is an obvious extended structure of the cluster in the X-Y plane.This elongated structure is distributed along the spiral arm,and the whole length is about 270 pc.The cluster age is 250 Myr,the total mass is about 439 M☉ and the tidal radius of the cluster is about 11 pc.Since more than half of member stars(352 stars)are located outside twice the tidal radius,it is suspected that this cluster is undergoing the dynamic dissolution process.Furthermore,the spatial distribution and kinematic analysis indicate that the extended structure in COIN-Gaia 13 is more likely to be caused by differential rotation of the Galaxy.
文献关键词：
中图分类号：
作者姓名：
Leya Bai;Jing Zhong;Li Chen;Jing Li;Jinliang Hou
作者机构：
School of Physics and Astronomy,China West Normal University,Nanchong 637002,China;Key Laboratory for Research in Galaxies and Cosmology,Shanghai Astronomical Observatory,Chinese Academy of Sciences,Shanghai 200030,China;School of Astronomy and Space Science,University of Chinese Academy of Sciences,Beijing 100049,China
文献出处：
引用格式：
[1]Leya Bai;Jing Zhong;Li Chen;Jing Li;Jinliang Hou-.Discovery of Extended Structure Around Open Cluster COIN-Gaia 13 Based on Gaia EDR3)[J].天文和天体物理学研究,2022(05):199-207
A类：
COIN,EDR3,astrometric,pyUPMASK
B类：
Discovery,Extended,Structure,Around,Open,Cluster,Gaia,Based,newly,discovered,open,cluster,revealed,DR2,data,It,nearby,distance,about,pc,Combined,five,dimensional,higher,accuracy,we,membership,assignment,algorithm,determine,large,extended,spatial,region,has,identified,candidate,After,obtaining,reliable,further,study,its,basic,properties,distribution,Our,results,show,that,there,obvious,structure,plane,This,elongated,distributed,along,spiral,arm,whole,length,age,Myr,total,mass,tidal,radius,Since,than,half,stars,are,located,outside,twice,suspected,this,undergoing,dynamic,dissolution,process,Furthermore,kinematic,analysis,indicate,likely,caused,differential,rotation,Galaxy
AB值：
0.50506
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