CAJ | 학술논문

灶神星(Vesta)是小行星主带的最大成员之一。主带的最大成员——谷神星(Ceres)已归类为矮行星，灶神星也是候选的矮行星。不同于其他类型的小行星，灶神星是很奇特的。灶神星的光谱跟 HED 陨石相似，因而推断它是该群陨石的母体。在灶神星族小行星和V型小行星中，其他小行星都很小，可认为它们是灶神星受撞击而抛出的碎块。跟含水的谷神星不同，灶神星是缺水的火成岩石星，因此，它们倍受关注。为揭示谷神星和灶神星的奥秘，美国专门发射黎明号(Dawn)飞船去探测它们，现在已完成了环绕灶神星一年多的探测，正在飞往谷神星途中。黎明号飞船所摄的灶神星图像令人大为震惊，其南极区有两个大陨击盆地，证实了它曾受到巨大撞击所抛出碎块成为有关的小行星和陨石，并且造成其赤道区的大沟槽。灶神星有相似于类地行星的核、幔、壳结构和早期演化史，可能是遗留的原行星(protoplanet)，因而，对灶神星的研究将有助于了解类地行星的起源和早期演化等问题。
조신성(Vesta)시소행성주대적최대성원지일。주대적최대성원——곡신성(Ceres)이귀류위왜행성，조신성야시후선적왜행성。불동우기타류형적소행성，조신성시흔기특적。조신성적광보근 HED 운석상사，인이추단타시해군운석적모체。재조신성족소행성화V형소행성중，기타소행성도흔소，가인위타문시조신성수당격이포출적쇄괴。근함수적곡신성불동，조신성시결수적화성암석성，인차，타문배수관주。위게시곡신성화조신성적오비，미국전문발사려명호(Dawn)비선거탐측타문，현재이완성료배요조신성일년다적탐측，정재비왕곡신성도중。려명호비선소섭적조신성도상령인대위진량，기남겁구유량개대운격분지，증실료타증수도거대당격소포출쇄괴성위유관적소행성화운석，병차조성기적도구적대구조。조신성유상사우류지행성적핵、만、각결구화조기연화사，가능시유류적원행성(protoplanet)，인이，대조신성적연구장유조우료해류지행성적기원화조기연화등문제。
Vesta is one of the largest asteroids in the asteroids belt. The largest one-Ceres was classified as a dwarf planet. Vesta also is one of the candidates of dwarf planets. Different from other types of asteroids, Vesta is very strange. Vesta spectrum is similar with HED meteorite, so that it is thought to be the parent body of this meteorite group. In the Vesta family and V-type of asteroids, others are small,and they are inferred as fragments from impacted Vesta. Different from Ceres with H2O, Vesta is a dry igneous rock. Therefore, they are specially concerned. To reveal the mystery of Vesta and Ceres , special emission of Dawn spacecraft is to explore them. Dawn has detected around Vesta for more than a year, and is in the way to Ceres. The images of Vesta from Dawn are surprising. Two large impact craters near its south pole confirmed that fragments from impacted Vesta become relevant asteroids and meteorites, which cause large trouphs in its equatorial region. The Vesta structure of core, mantle and crust,as well as its history of formation and early evolution are like terrestrial planet, which is helpful to research the origin and early evolution of terrestrial planets.