论文标题
将小行星和陨石与可见和近红外光谱连接
Connecting Asteroids and Meteorites with visible and near-infrared spectroscopy
论文作者
论文摘要
我们确定小行星和陨石之间的光谱相似性。我们确定了500个小行星光谱之间的光谱匹配和超过1,000多个超过0.45-2.5微米的Relab陨石光谱。我们重现了许多主要且先前已知的陨石掌握连接,并发现了可能的新的,更罕见或更不建立的连接。完善的连接包括:带有S-复合小行星的普通软骨(OC);原始CM碳质软管,带有CH型小行星和带有C型小行星加热的CMS;带有V型的Hed陨石;带有XC型小行星的Enstatite软骨;带有K型小行星的简历陨石;具有橄榄石主导的A型小行星的腕足,苍白球和R软骨。 我们发现Q,SQ,S,SR到SV的趋势与LL与H相关,Q型主要与L和LL普通软骨匹配,而SR和SV主要与L和H普通软骨属。与X复合物相匹配的普通软骨样品,所有板的测量值,许多标记为深色或黑色(震惊)OC。我们发现具有足够大的光谱斜率与D型小行星光谱匹配的碳质软管样品。 在许多情况下,小行星类型到陨石类型的链接不是唯一的。尽管小行星类和陨石类之间存在良好的匹配,但是许多小行星类型和陨石类型之间的匹配较少,但仍然在频谱上兼容。该结果强调了小行星和陨石组成的多样性,并仅通过光谱特征突出了分类的堕落。最近和即将到来的航天器任务将阐明许多小行星类的组成,尤其是那些没有诊断特征的小行星(C-,B-,X-和D型)的组成,并测量了CERES,Ryugu,Ryugu,Bennu,Psyche,Psyche和c-,p-,&d-Dypes作为Lucy Mission的CERES,Ryugu,Bennu,Psyche,Psyche和d-Dypes。
We identify spectral similarities between asteroids and meteorites. We identify spectral matches between 500 asteroid spectra and over 1,000 samples of RELAB meteorite spectra over 0.45-2.5 microns. We reproduce many major and previously known meteorite-asteroid connections and find possible new, more rare or less-established connections. Well-established connections include: ordinary chondrites (OC) with S-complex asteroids; pristine CM carbonaceous chondrites with Ch-type asteroids and heated CMs with C-type asteroids; HED meteorites with V-types; enstatite chondrites with Xc-type asteroids; CV meteorites with K-type asteroids; Brachinites, Pallasites and R chondrites with olivine-dominated A-type asteroids. We find a trend from Q, Sq, S, Sr to Sv correlates with LL to H, with Q-types matching predominately to L and LL ordinary chondrites, and Sr and Sv matching predominantly with L and H ordinary chondrites. Ordinary chondrite samples that match to the X-complex, all measurements of slabs and many labeled as dark or black (shocked) OCs. We find carbonaceous chondrite samples having spectral slopes large enough to match D-type asteroid spectra. In many cases the asteroid type to meteorite type links are not unique. While there are well established matches between an asteroid class and meteorite class, there are less common but still spectrally compatible matches between many asteroid types and meteorite types. This result emphasizes the diversity of asteroid and meteorite compositions and highlights the degeneracy of classification by spectral features alone. Recent and upcoming spacecraft missions will shed light on the compositions of many of the asteroid classes, particularly those without diagnostic features, (C-, B-, X-, and D-types), with measurements of Ceres, Ryugu, Bennu, Psyche, and C-, P-, and D-types as part of the Lucy mission.