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首页> 外文期刊>American Journal of Space Science >ASYMPTOTIC GIANT BRANCH STARS MIGRATION FROM THE CENTRAL OF THE MILKY WAY GALAXY TO OUR SUN’S BIRTHPLACE AND ITS RELATION WITH SILICON CARBIDE GRAINS
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ASYMPTOTIC GIANT BRANCH STARS MIGRATION FROM THE CENTRAL OF THE MILKY WAY GALAXY TO OUR SUN’S BIRTHPLACE AND ITS RELATION WITH SILICON CARBIDE GRAINS

机译：从银河系中心到太阳出生地的渐近巨星分支及其与碳化硅晶粒的关系

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摘要

Silicon carbide grains found in meteorites are peculiar in their age and isotopic ratios; they formed before the Sun was born and their isotopic signature indicates that they come from a different galactic region. This study aims to seek a possible paradigm for such richness and peculiarity through Monte Carlo simulation of scattering of Asymptotic Giant Branch (AGB) stars off molecular cloud. Such approach randomly generates AGB stars in regions close to the Galaxy bulge and examines possibility of migration to outer regions by scattering off molecular cloud. A successful explanation to this problem will influence how we think nuclides were formed and then distributed in the Galaxy and will shed new light unto the age and the chemical evolution of the Milky Way Galaxy. Thus, it is important that we know where do they come from and how do they end up in our backyard?
机译：陨石中发现的碳化硅晶粒具有独特的年龄和同位素比。它们是在太阳诞生之前形成的，其同位素特征表明它们来自不同的银河区域。这项研究旨在通过对分子云上渐近大分支（AGB）恒星散射的蒙特卡罗模拟来寻找这种丰富性和特殊性的可能范例。这种方法在靠近银河凸起的区域中随机产生AGB星，并通过从分子云中散射出来检查迁移到外部区域的可能性。对这个问题的成功解释将影响我们认为核素是如何形成并在银河中分布的，这将为银河系的时代和化学演化提供新的思路。因此，重要的是我们知道它们来自何处以及如何最终进入我们的后院？

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