论文标题
熔岩世界：系外行星表面
Lava World: Exoplanet Surfaces
论文作者
论文摘要
最近对熔岩世界表面反射的最初测量为研究岩石行星进化的不同阶段提供了前所未有的机会。岩石熔岩世界系外行星表面的频谱特征为它们的进化，地幔组成和内部起作用提供了见解。然而，尚无数据库包含光谱反射率和广泛潜在系外行星表面材料的发射。在这里，我们首先合成了16个潜在系外行星表面，跨越了基于不同宿主恒星的金属性指导的潜在地幔材料的广泛化学成分。然后，我们测量了它们的红外反射光谱（2.5-28μm，350-4000 cm^{ - 1}），从中我们可以从中获得它们的发射光谱，并在8μm（Christiansen特征）（CF）（CF）之间建立组成和强频谱之间的链接。我们的分析表明，与CF有了新的多组分组成关系，以及与系外类型地幔的二氧化硅含量的相关性。我们还报告了材料的矿物质学是熔岩世界的矿物质学。该数据库是一种工具，可以帮助解释熔岩世界的未来光谱，这将由James Webb太空望远镜和未来的任务收集
The recent first measurements of the reflection of the surface of a lava world provides an unprecedented opportunity to investigate different stages of rocky planet evolution. The spectral features of the surfaces of rocky lava world exoplanets give insights into their evolution, mantle composition and inner workings. However, no database exists yet that contains spectral reflectivity and emission of a wide range of potential exoplanet surface materials. Here we first synthesized 16 potential exoplanet surfaces, spanning a wide range of chemical compositions based on potential mantle material guided by the metallicity of different host stars. Then we measured their infrared reflection spectrum (2.5 - 28 μm, 350 - 4000 cm^{-1}), from which we can obtain their emission spectra and establish the link between the composition and a strong spectral feature at 8 μm, the Christiansen feature (CF). Our analysis suggests a new multi-component composition relationship with the CF, as well as a correlation with the silica content of the exoplanet mantle. We also report the mineralogies of our materials as possibilities for that of lava worlds. This database is a tool to aid in the interpretation of future spectra of lava worlds that will be collected by the James Webb Space Telescope and future missions
