| 疏散星团NGC6530天区的恒星自行和成员概率 |
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| 引用本文： | 温文,赵君亮,陈力.疏散星团NGC6530天区的恒星自行和成员概率[J].中国科学院上海天文台年刊,2005(1):79-94. |
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| 作者姓名： | 温文 赵君亮 陈力 |
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| 作者单位： | 中国科学院上海天文台，中国科学院上海天文台，中国科学院上海天文台 上海 200030，上海 200030，上海 200030 |
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| 基金项目： | 国家自然科学基金重点(No．10333020)项目资助课题。 |
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| 摘 要： | 利用上海天文台的照相底片资料,确定了疏散星团NGC6530天区364颗恒星的自行和成员概率,并对有关自行测定的方法、结果和精度等问题作了较为详细的介绍和讨论。使用的底片历元差为87年,全部恒星自行中误差的均方根值为1．09mas/a。
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| 关 键 词： | 天体测量 自行 疏散星团 NGC6530 成员概率 |
| 收稿时间： | 2004-12-20 |
| 修稿时间： | 2005-01-20 |
PROPER MOTIONS AND MEMBERSHIP PROBABILITIES OF STARS IN THE REGION OF THE OPEN CLUSTER NGC6530 |
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| WEN Wen, ZHAO Junliang, CHEN Li.PROPER MOTIONS AND MEMBERSHIP PROBABILITIES OF STARS IN THE REGION OF THE OPEN CLUSTER NGC6530[J].Annals of Shanghai Observatory Academia Sinica,2005(1):79-94. |
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| Authors: | WEN Wen ZHAO Junliang CHEN Li |
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| Institution: | Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 200030 |
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| Abstract: | By using the plate data of Shanghai Astronomical Observatory, which were taken with the 40cm astrograph of focal length 6. 9m at Zo-Se, proper motions and membership probabilities of 364 stars in the region of the open cluster NGC6530 are determined. The 79 stars of the Tycho-2 Catalogue found in the cluster region are used as reference stars for central overlap reduction of stellar proper motions. The procedure, results and accuracies of proper motion determination are discussed and analyzed in some detail. The maximum epoch difference of the 6 photographic plates used for proper motion reduction is 87 years, and the mean error of the proper motions for these stars we obtained is estimated to be. Finally, a list of proper motions and membership probabilities of 364 stars in the region of the NGC6530 is given. |
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| Keywords: | astrometry - proper motion - open cluster - NGC6530 - membership probability |
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