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요약정보
利用红团簇星测定超新星遗迹距离 / Measure Distances of Supernova Remnants Using Red Clump Stars
Resource Type
Academic Journal
Authors
雷贤欢
;
朱辉
;
单素素
;
张海燕
;
田文武
;
LEI Xian-huan
;
ZHU Hui
;
SHAN Su-su
;
ZHANG Hai-yan
;
TIAN Wen-wu
Source
天文学进展 / Progress in Astronomy
. 40(2):205-220
Subject
超新星遗迹
消光-距离
红团簇星
Language
Chinese
ISSN
1000-8349
Online Access
Find it @ DONGA
초록
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、∑-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.
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