论文标题
3型碳质软管的光谱反射率分析，并寻找其小行星母体
Spectral reflectance analysis of type 3 carbonaceous chondrites and search for their asteroidal parent bodies
论文作者
论文摘要
非差异的小行星是我们太阳系中最原始的物体之一，逃脱了强烈的加热机制。为了帮助我们了解小行星测量的反射光谱中包含的信息，我们分析了实验室中的陨石。我们对大量反射光谱进行了深入的分析：23 CV3、15 CO3、4 CR2和31个未平衡的普通软骨（UOC）。每个样品的热史都具有良好的特征。在每个软骨组之间和内部观察到反射光谱的变化。 UOC系统地表现出更深的吸收特征，将其与碳质软管区分开。通过在较低的波长下表现出1μm带，很容易将本研究中呈现的CR2样品与3型软骨区分开。简历和CO软粒晶粒具有可比的矿物学成分，因此不能仅根据其光谱特征来区分。对于CV软管，1μM带深的深度随着变质级的增加而增加，而在CO软骨中，光谱显示出越来越多的视觉斜率。通过将软骨光谱与各种最终成员小行星的光谱进行比较，我们可以提出几种可能的遗传联系与所研究的软骨的遗传联系。
Non-differentiated asteroids are among the most primitive objects in our Solar System, having escaped intense heating mechanisms. To help us understand the information contained in reflectance spectra measured on asteroids, we analyzed meteorites in the laboratory. We present an in-depth analysis of a large set of reflectance spectra: 23 CV3, 15 CO3, 4 CR2 and 31 Unequilibrated Ordinary Chondrites (UOCs). Each of the samples has a well characterized thermal history . Variations in the reflectance spectra are observed between and within each chondrite group. UOCs systematically exhibit deeper absorption features, distinguishing them from carbonaceous chondrites. The CR2 samples presented in this study are easily distinguished from type 3 chondrites by exhibiting the 1 μm band at lower wavelengths. CV and CO chondrites exhibit comparable mineralogical compositions and can, therefore, not be distinguished solely based on their spectral features. In the case of CV chondrites, the 1 μm band depth increases with increasing metamorphic grade, while among CO chondrites, the spectra exhibit increasing visual slopes. By comparing the chondrite spectra with the spectra of various end member asteroids we are able to suggest several possible genetic links to the studied chondrites.
