论文标题
IO表面的光谱映射与HST/STIS：SO $ _2 $霜冻，硫磺同素和大规模的构图图案
Spectroscopic mapping of Io's surface with HST/STIS: SO$_2$ frost, sulfur allotropes, and large-scale compositional patterns
论文作者
论文摘要
IO激烈的火山活动导致太阳系中最彩色的表面之一。 IO的紫外线和可见的波长观察对于发现其火山色调背后的化学反应至关重要。在这里，我们介绍了IO从空间望远镜成像光谱仪（HST）上介绍IO的全球，空间分辨的紫外线可见光谱，这些光谱光谱仪（HST）弥合了以前高度分析的成像和磁盘综合光谱的差距，以提供空间和光谱细节的前所未有的组合。我们使用这个综合数据集研究光谱末端成员，与So $ _2 $霜冻和其他硫种相关的MAP观察到的光谱特征，并在IO表面过程的背景下探索可能的组成。与过去的观察一致，我们的结果与广泛的赤道一致，因此$ _2 $霜冻的沉积物在多年的时间尺度上保持稳定，围绕So $ _2 $沉积物的广泛富含硫磺的平原，以及Pele的Pyroclastic Ring and in lighlatiutive Short-Latsiger Supterable All-locabos All-Chain sulfurs sulfurs sulfurs solfurs so $ _2 $。
Io's intense volcanic activity results in one of the most colorful surfaces in the solar system. Ultraviolet and visible-wavelength observations of Io are critical to uncovering the chemistry behind its volcanic hues. Here, we present global, spatially resolved UV-visible spectra of Io from the Space Telescope Imaging Spectrograph on the Hubble Space Telescope (HST), which bridge the gap between previous highly resolved imagery and disk-integrated spectroscopy, to provide an unprecedented combination of spatial and spectral detail. We use this comprehensive dataset to investigate spectral endmembers, map observed spectral features associated with SO$_2$ frost and other sulfur species, and explore possible compositions in the context of Io surface processes. In agreement with past observations, our results are consistent with extensive equatorial SO$_2$ frost deposits that are stable over multi-decade timescales, widespread sulfur-rich plains surrounding the SO$_2$ deposits, and the enrichment of Pele's pyroclastic ring and the high-latitude regions in metastable short-chain sulfur allotropes.
