XMM-Newton observation of the eclipsing binary Algol
Yang XJ(杨雪娟); Lu FJ(卢方军); Bernd Aschenbach; Li Chen
刊名天文和天体物理学研究
2011
期号4页码:457-470
关键词Xue-Juan Chen(Faculty of Materials Optoelectronics and Physics Xiangtan University Xiangtan China Yang Particle Astrophysics Center Institute of High Energy Physics Chinese Academy of Sciences Beijing China Max-Planck-Institut fur Extraterrestrische Physik Garching Germany Department of Astronomy Beijing Normal University Beijing China) Fang-Jun Lu Bemd Aschenbach Li
英文摘要We present an XMM-Newton observation of the eclipsing binary Algol which contains an X-ray dark B8V primary and an X-ray bright K2IV secondary.The observation covered the optical secondary eclipse and captured an X-ray flare that was eclipsed by the B star.The XMM-Newton European Photon Imaging Camera and Reflection Grating Spectrometer spectra of Algol in its quiescent state are described by a two-temperature plasma model.The cool component has a temperature around 6.4×106 K while that of the hot component ranges from 2 to 4.0×107 K.Coronal abundances of C,N,O,Ne,Mg,Si and Fe were obtained for each component for both the quiescent and the flare phases,generally with upper limits for S and Ar,and upper limits for C,N,and O from the hot component.F-tests show that the abundances do not need to be differentbetween the cool and the hot componentand between the quiescent and the flare phase with the exception of Fe.Although the Fe abundance of the cool component remains constant at ~0.14,the hot component shows an Fe abundance of ~0.28,which increases to ~0.44 during the flare.This increase is expected from the chromospheric evaporation model.The absorbing column density NH of the quiescent emission is 2.5×1020 cm-2,while that of the flare-only emission is significantly lower and consistent with the column density of the interstellar medium.This observation substantiates earlier suggestions of the presence of X-ray absorbing material in the Algol system.
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/218081
专题中国科学院高能物理研究所_粒子天体物理中心_期刊论文
中国科学院高能物理研究所_理论物理室
推荐引用方式
GB/T 7714
Yang XJ,Lu FJ,Bernd Aschenbach,et al. XMM-Newton observation of the eclipsing binary Algol[J]. 天文和天体物理学研究,2011(4):457-470.
APA 杨雪娟,卢方军,Bernd Aschenbach,&Li Chen.(2011).XMM-Newton observation of the eclipsing binary Algol.天文和天体物理学研究(4),457-470.
MLA 杨雪娟,et al."XMM-Newton observation of the eclipsing binary Algol".天文和天体物理学研究 .4(2011):457-470.
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
12185.pdf(1077KB)期刊论文作者接受稿开放获取CC BY-NC-SA浏览 请求全文
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[杨雪娟]的文章
[卢方军]的文章
[Bernd Aschenbach]的文章
百度学术
百度学术中相似的文章
[杨雪娟]的文章
[卢方军]的文章
[Bernd Aschenbach]的文章
必应学术
必应学术中相似的文章
[杨雪娟]的文章
[卢方军]的文章
[Bernd Aschenbach]的文章
相关权益政策
暂无数据
收藏/分享
文件名: 12185.pdf
格式: Adobe PDF
此文件暂不支持浏览
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。