超新星SN1987A遗迹的尘埃  

Dust in the SN1987A Remnant

作　　者：刘悦 姜碧沩[1] 李爱根[2] LIU Yue;JIANG Bi-wei;LI Ai-gen(Department of Astronomy,Beijing Normal University,Beijing 100875,China;Department of Physics and Astronomy,University of Missouri,MO 65211,USA)

机构地区：[1]北京师范大学天文系,北京100875 [2]美国密苏里大学物理与天文系,美国密苏里州哥伦比亚市65211

出　　处：《天文学进展》2018年第3期232-250,共19页Progress In Astronomy

基　　金：国家自然科学基金(11533002)

摘　　要：超新星是宇宙中最重要的尘埃来源之一。对超新星遗迹尘埃的研究,能增进人们对恒星演化、大质量恒星的核合成和抛射物的物理和化学演化等的了解。SN1987A是1604年以来在地球上观测到的最亮的超新星,因此也是研究超新星和超新星遗迹物理独一无二的对象。综述了SN1987A遗迹的抛射物和内赤道环中尘埃的种类、质量、尺寸等特性,以及这些尘埃特性随时间的演变。如果SN1987A遗迹中的大部分尘埃能够存活在不被激波破坏,而且SN1987A具有典型性,那么可以认为超新星是宇宙尘埃的重要来源。Supernovae(SNe)are considered as one of the most important sources of cosmic dust.At high redshifts(e.g.,z>6),SNe are the dominant dust producer since asymptotic giant branch(AGB)stars have not yet sufficiently evolved to make dust.Dust in supernova remnants(SNRs)offers a valuable insight into the late-stage evolution and nucleosynthesis of massive stars,and the physical and chemical evolution of the ejecta of SN explosion.As the brightest SN observed from the Earth since 1604,SN1987A provides us a unique opportunity for studying SNe and SNRs.In this review we summarize the properties of the dust in the ejecta and the inner equatorial ring of SN1987A.We discuss the dust composition,size,and mass and their evolution with time.If most of the dust in SN1987A can survive the reverse shock wave and SN1987A is a typical Type II SN,then SNe are one important dust source of the interstellar medium of galaxies.

关 键 词：超新星遗迹 SN1987A 尘埃 抛射物 内赤道环 

分 类 号：P145.3[天文地球—天体物理]