行星状星云测距的研究现状

发布时间：2018-06-13 12:00

本文选题：行星状星云 + 测距方法　；参考：《天文学进展》2015年03期

【摘要】：行星状星云是研究恒星演化、星际介质与星系化学形成历史与演化等问题的重要探针。距离是行星状星云的基本物理参数,对研究其大小、光度、电离质量、形成率、空间密度和在银河系内的分布等性质至关重要。河内行星状星云距离的研究已有几十年历史,但其测距结果的准确性普遍偏低,仅有31颗距离的不确定度在20%内。概述了行星状星云测距的9种主要方法,即:三角视差法、星团成员法、膨胀视差法、分光视差法、红化方法、Na D线吸收法、中心重力法、统计方法、运动学方法。着重介绍运动学测距法,用于测量受银道面上消光严重或没有可观测中心星但射电较明亮的行星状星云距离,为将来进一步的测距工作提供参考。
[Abstract]:Planetary nebula is an important probe to study the evolution of stars, the history and evolution of chemical formation of interstellar media and galaxies. Distance is the basic physical parameter of planetary nebula, which is very important to study its size, luminosity, ionization mass, formation rate, spatial density and distribution in the Milky way. The distance of the planetary nebula in Hanoi has been studied for several decades, but the accuracy of its ranging results is generally low, with only 31 distances of uncertainty within 20%. Nine main methods of planetary nebula ranging are summarized, including triangular parallax method, star cluster membership method, dilatation parallax method, red method, NaD line absorption method, central gravity method, statistical method and kinematics method. The kinematic ranging method is introduced in this paper to measure the distance of planetary nebula with severe extinction or no observable center stars on the silver channel surface, which provides a reference for further ranging work in the future.
【作者单位】：中国科学院国家天文台;中国科学院大学;北京师范大学信息科学与技术学院;北京市文化遗产数字化保护与虚拟现实重点实验室;
【基金】：国家自然科学基金(211381001,11473038) 973项目(2012CB821800,2013CB837901)
【分类号】：P155.12

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