Characterization of asteroid analogues by means of emission and reflectance spectroscopy in the 1- to 100-µm spectral range
Characterization of asteroid analogues by means of emission and reflectance spectroscopy in the 1- to 100-µm spectral range
复制标题
通过 1 至 100 µm 光谱范围内的发射和反射光谱表征小行星类似物
DOI：
10.1186/s40623-016-0489-y
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
M. d'Amore
中科院分区：
文献类型：
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作者：
A. Maturilli;J. Helbert;S. Ferrari;B. Davidsson;M. d'Amore
在过去的几十年里，我们看到了大量以太阳系中的小天体为目标的任务。NASA、ESA和JAXA向不同的太阳系小天体（SSSB）发射了任务，日本的隼鸟号任务从s型小行星Itokawa表面带回了样本。日本宇宙航空研究开发机构于2014年启动了一项后续任务（隼鸟2号），从碳质（c型）小行星1999 JU3上收集样本，并将其带回地球。美国宇航局的OSIRIS-REx任务将于2016年9月发射，探索碳质小行星本努。尽管已经有了丰富的反射率和发射率光谱库，但这些光谱库大多是基于空气中光谱范围的测量，覆盖了可见光到中红外（大约从0.4到25 μ m）。为了描述适合作为小行星和SSSB表面类似物的矿物、岩石和陨石的特征，需要在更宽的光谱范围和更接近小行星表面的真空条件下进行光谱测量。为了填补这一空白，我们在柏林德国航空航天中心的行星发射率实验室对几颗陨石和其他类似物进行了大光谱范围（1-100 μ m）的光谱测量。这些数据为小行星表面提供了更直接的类似物，并扩展了我们现有的发射率和反射率测量数据库。
The last decades have seen a large number of missions targeting small bodies in the solar system. NASA, ESA and JAXA sent missions to different solar system small bodies (SSSB), and the Japan mission Hayabusa returned samples from the surface of the S-type asteroid Itokawa. JAXA launched in 2014 a follow-up mission (Hayabusa2) to collect a sample from carbonaceous (C-type) asteroid 1999 JU3 asteroid and bring it back to Earth. The NASA’s OSIRIS-REx mission will launch in September 2016 to explore the carbonaceous asteroid Bennu. Despite an already existing rich collection of reflectance and emissivity spectral libraries for asteroid analogues, those are mostly based on measurements in air for a spectral range covering the visible to the medium infrared (approximately, from 0.4 to 25 µm). To characterize minerals, rocks and meteorites suitable for being surface analogues for asteroids and SSSB in general, spectroscopic measurements are needed for a wider spectral range and in vacuum, conditions that more closely resemble those found on asteroid surfaces. To fill this gap we acquired spectral measurements over a large spectral range (1–100 µm) for several meteorites and other analogues at the Planetary Emissivity Laboratory of the German Aerospace Center in Berlin. Those data provide more direct analogues for asteroid surfaces and expand our existing database of emissivity and reflectance measurements.