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天文和天体物理学研究
天文和天体物理学研究

汪景琇 景益鹏

月刊

1674-4527

wenyy@bao.ac.cn

010-64853746

100717

北京朝阳区大屯路甲20号国家天文台 RAA编辑部

天文和天体物理学研究/Journal Research in Astronomy and AstrophysicsCSCD北大核心CSTPCDSCI
查看更多>>本刊1981年创刊至2000年已出版20卷。创刊时为中文期刊，2001年改为《中国天文和天体物理学报》（英文版）。主要刊登天文学和天体物理学领域的原创性研究论文。主要栏目和报道范围：“研究快报”用来报道天文观测的新结果及新理论；“特约综述”聘请国际知名天文学家就某些热点问题进行专题评述。“研究论文”具有原创性。2009年更名为《天文和天体物理学研究》（英文版），由双月刊变为月刊。
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    13 Galactic Star Clusters in Gaia DR3 Identified by An Improved FoF and UPMASK Hybrid Method Using MvC

    Huanbin ChiZebang LaiFeng WangZhongmu Li...
    243-258页
    查看更多>>摘要：Open clusters(OCs)serve as invaluable tracers for investigating the properties and evolution of stars and galaxies.Despite recent advancements in machine learning clustering algorithms,accurately discerning such clusters remains challenging.We re-visited the 3013 samples generated with a hybrid clustering algorithm of FoF and pyUPMASK.A multi-view clustering(MvC)ensemble method was applied,which analyzes each member star of the OC from three perspectives—proper motion,spatial position,and composite views—before integrating the clustering outcomes to deduce more reliable cluster memberships.Based on the MvC results,we further excluded cluster candidates with fewer than ten member stars and obtained 1256 OC candidates.After isochrone fitting and visual inspection,we identified 506 candidate OCs in the Milky Way.In addition to the 493 previously reported candidates,we finally discovered 13 high-confidence new candidate clusters.
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    On the Formation of the Double Neutron Star Binary PSR J1846-0513

    Long JiangKun XuShuai ZhaYun-Lang Guo...
    259-267页
    查看更多>>摘要：The double neutron star PSR J1846-0513 is discovered by the Five-hundred-meter Aperture Spherical radio Telescope(FAST)in Commensal Radio Astronomy FAST Survey.The pulsar is revealed to be harbored in an eccentric orbit with e=0.208 and an orbital period of 0.613 day.The total mass of the system is constrained to be 2.6287(35)M☉,with a mass upper limit of 1.3455 M☉ for the pulsar and a mass lower limit of 1.2845 M☉ for the companion star.To reproduce its evolution history,we perform a 1D model for the formation of PSR J1846-0513 whose progenitor is assumed to be neutron star—helium(He)star system via MESA code.Since the large eccentricity is widely believed to originate from an asymmetric supemova explosion,we also investigate the dynamical effects of the supernova explosion.Our simulated results show that the progenitor of PSR J1846-0513 could be a binary system consisting of a He star of 3.3-4.0 M☉ and a neutron star in a circular orbit with an initial period of～0.5 day.
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    • 维普

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