利用红团簇星测定超新星遗迹距离  

Measure Distances of Supernova Remnants Using Red Clump Stars

作　　者：雷贤欢 朱辉[1] 单素素 张海燕[1,3,4] 田文武[1,2] LEI Xian-huan;ZHU Hui;SHAN Su-su;ZHANG Hai-yan;TIAN Wen-wu(National Astronomical Observatories,Chinese Academy of Sciences,Beijing 10021,China;U-niversity of Chinese Academy of Sciences,Beijing 100049,China;CAS Key Laboratory of FAST,National Astronomical Observatories,Beijing 100101,China;Hebei Key Laboratory of Radio Astron-omy Technology,Shijiazhuang 050081,China)

机构地区：[1]中国科学院国家天文台,北京100021 [2]中国科学院大学,北京100049 [3]中国科学院FAST重点实验室,北京100101 [4]河北省射电天文技术重点实验室,石家庄050081

出　　处：《天文学进展》2022年第2期205-220,共16页Progress In Astronomy

基　　金：科技部大科学装置重点研发项目(2018YFA0404203,2018YFA0404202);国家自然科学基金(12041301,U1831128,12073039);中国载人航天工程巡天空间望远镜专项(CMS-CSST-2021-A09)。

摘　　要：超新星遗迹(supernova remnants, SNRs)是星际介质的重要来源,是理解超新星爆发机制、银河系宇宙线的加速和星际介质中化学元素丰度的重要载体。对SNRs距离的准确测量能对遗迹的其他物理参数进行更好的约束。在目前已经证认的SNRs和新发现的SNRs候选体中,有约1/3的SNRs及候选体有比较可靠的距离测量信息。通常测量SNRs距离的主要方法有3种:运动学方法、Σ-D关系法、消光-距离法。近几年,基于消光-距离的测距原理,利用红团簇星作探针来测量SNRs距离的方法得到迅速发展并广泛应用。红团簇星是一类正处于He核燃烧阶段的小质量恒星,它们的绝对光度和本征颜色弥散小,很容易被识别出,故常被用来作为标准烛光进而测量天体的距离。介绍了目前SNRs测距的进展,总结了利用红团簇星测量SNRs距离的进展。Supernova remnant is an important source of the interstellar medium,and important mediation to understand the mechanisms of supernova explosions,the acceleration of Galactic Cosmic-Rays,and the abundance of chemical elements in the interstellar medium.An accurate measurement of the distance to an SNR can better constrain other physical parameters of the SNR.However,reliable distance measurement of SNRs is very challenging.Up to now,in the confirmed SNRs and newly discovered SNR candidates,about one-third of them have reliable distance measurements.Generally,there are three main methods to measure SNRs’distance:kinematic method,radio-surface-brightness-to-diameter relation and extinction-distance map.In recent years,based on the principle of extinction-distance relation,the method of measuring SNR’s distances using red clump(RC)as probe has been well developed and applied.RCs are a kind of low-mass stars in the burning stage of the helium nuclei.Their absolute luminosity and dispersion are small,so they can be easily identified.Therefore,they are often used as standard candles to measure the distance of other celestial bodies.This paper will first introduce the current progress in SNR distance measurement,then will summarize the achievement using the RCs method.

关 键 词：超新星遗迹 消光-距离 红团簇星 

分 类 号：P145.3[天文地球—天体物理]