- Names
-
- S. Schröder
- O. Poch
- M. Ferrari
- S. De Angelis
- R. Sultana
- S. Potin
- P. Beck
- M. C. De Sanctis
- B. Schmitt
- Title
- Dwarf planet (1) Ceres surface bluing due to high porosity resulting from sublimation
- Abstract
- The Dawn mission found that the dominant colour variation on the surface of dwarf planet Ceres is a change of the visible spectral slope, where fresh impact craters are surrounded by blue (negative spectral-sloped) ejecta. The origin of this colour variation is still a mystery. Here we investigate a scenario in which an impact mixes the phyllosilicates present on the surface of Ceres with the water ice just below. In our experiment, Ceres analogue material is suspended in liquid water to create intimately mixed ice particles, which are sublimated under conditions approximating those on Ceres. The sublimation residue has a highly porous, foam-like structure made of phyllosilicates that scattered light in similar blue fashion as the Ceres surface. Our experiment provides a mechanism for the blue colour of fresh craters that can naturally emerge from the Ceres environment.
- Keywords
- spectroscopy, grating spectrometer, gonio radiometer, bidirectional reflection, bidirectional reflectance spectra, near-IR, molecular solid, ice, water ice, Ceres, asteroids, Solar System
- Content
- sample, spectral data, experimental physics, planetary sciences, remote sensing
- Year
- 2021
- Journal
- Nature Communications
- Volume
- 12
- Pages
- 274
- Document type
- article
- Publication state
- published
- Comments
- None
- Experiment/Spectra
-
- Vis-NIR reflectance spectrum of Nontronite NAu-1 with 0-36 µm grain size, 2 mm thick layer, at 299 K
- Vis-NIR reflectance spectrum of Nontronite NAu-1 with 0-36 µm grain size, less than 1 mm thick layer, at 333 K
- Vis-NIR reflectance spectrum of Water ice particles 67±31μm containing 1wt% Nontronite in intra-mixture at 173 K
- Vis-NIR reflectance spectrum of sublimating Water ice particles 67±31μm containing 1wt% Nontronite in intra-mixture at 173 K (t=0h)
- Vis-NIR reflectance spectrum of sublimating Water ice particles 67±31μm containing 1wt% Nontronite in intra-mixture at 173 K (t=1h)
- Vis-NIR reflectance spectrum of sublimating Water ice particles 67±31μm containing 1wt% Nontronite in intra-mixture at 173 K (t=3h)
- Vis-NIR reflectance spectrum of sublimating Water ice particles 67±31μm containing 1wt% Nontronite in intra-mixture at 173 K (t=6h)
- Vis-NIR reflectance spectrum of sublimating Water ice particles 67±31μm containing 1wt% Nontronite in intra-mixture at 173 K (t=9h)
- Vis-NIR reflectance spectrum of sublimating Water ice particles 67±31μm containing 1wt% Nontronite in intra-mixture at 173 K (t=14h)
- Vis-NIR reflectance spectrum of sublimating Water ice particles 67±31μm containing 1wt% Nontronite in intra-mixture at 173 K (t=19h)
- Vis-NIR reflectance spectrum of sublimating Water ice particles 67±31μm containing 1wt% Nontronite in intra-mixture at 173 K (t=29h)
- Vis-NIR reflectance spectrum of sublimating Water ice particles 67±31μm containing 1wt% Nontronite in intra-mixture at 173 K (t=39h)
- Vis-NIR reflectance spectrum of sublimating Water ice particles 67±31μm containing 1wt% Nontronite in intra-mixture at 173 K (t=50h)
- Vis-NIR reflectance spectrum of a mixture of Magnetite, NH4-Nontronite, Antigonite, Dolomite with 0-36 µm grain size at 297 K
- Vis-NIR reflectance spectrum of Water ice particles 67±31μm containing NH4-Nontronite and mixed with Magnetite, Antigorite, Dolomite at 173 K
- Vis-NIR reflectance spectrum of sublimating Water ice particles containing NH4-Nontronite and mixed with Magnetite, Antigorite, Dolomite at 173 K (t=0h)
- Vis-NIR reflectance spectrum of sublimating Water ice particles containing NH4-Nontronite and mixed with Magnetite, Antigorite, Dolomite at 173 K (t=1h)
- Vis-NIR reflectance spectrum of sublimating Water ice particles containing NH4-Nontronite and mixed with Magnetite, Antigorite, Dolomite at 173 K (t=2h)
- Vis-NIR reflectance spectrum of sublimating Water ice particles containing NH4-Nontronite and mixed with Magnetite, Antigorite, Dolomite at 173 K (t=3h)
- Vis-NIR reflectance spectrum of sublimating Water ice particles containing NH4-Nontronite and mixed with Magnetite, Antigorite, Dolomite at 173 K (t=4h)
- Vis-NIR reflectance spectrum of sublimating Water ice particles containing NH4-Nontronite and mixed with Magnetite, Antigorite, Dolomite at 173 K (t=5h)
- Vis-NIR reflectance spectrum of sublimating Water ice particles containing NH4-Nontronite and mixed with Magnetite, Antigorite, Dolomite at 173 K (t=6h)
- Vis-NIR reflectance spectrum of sublimating Water ice particles containing NH4-Nontronite and mixed with Magnetite, Antigorite, Dolomite at 173 K (t=7h)
- Vis-NIR reflectance spectrum of sublimating Water ice particles containing NH4-Nontronite and mixed with Magnetite, Antigorite, Dolomite at 173 K (t=8h)
- Vis-NIR reflectance spectrum of sublimating Water ice particles containing NH4-Nontronite and mixed with Magnetite, Antigorite, Dolomite at 173 K (t=9h)
- Vis-NIR reflectance spectrum of sublimating Water ice particles containing NH4-Nontronite and mixed with Magnetite, Antigorite, Dolomite at 173 K (t=10h)
- Vis-NIR reflectance spectrum of sublimating Water ice particles containing NH4-Nontronite and mixed with Magnetite, Antigorite, Dolomite at 173 K (t=11h)
- Vis-NIR reflectance spectrum of sublimating Water ice particles containing NH4-Nontronite and mixed with Magnetite, Antigorite, Dolomite at 173 K (t=13h)
- Vis-NIR reflectance spectrum of sublimating Water ice particles containing NH4-Nontronite and mixed with Magnetite, Antigorite, Dolomite at 173 K (t=15h)
- Vis-NIR reflectance spectrum of sublimating Water ice particles containing NH4-Nontronite and mixed with Magnetite, Antigorite, Dolomite at 173 K (t=17h)
- Vis-NIR reflectance spectrum of sublimating Water ice particles containing NH4-Nontronite and mixed with Magnetite, Antigorite, Dolomite at 173 K (t=19h)
- Vis-NIR reflectance spectrum of sublimating Water ice particles containing NH4-Nontronite and mixed with Magnetite, Antigorite, Dolomite at 173 K (t=24h)
- Vis-NIR reflectance spectrum of sublimating Water ice particles containing NH4-Nontronite and mixed with Magnetite, Antigorite, Dolomite at 173 K (t=29h)
- Vis-NIR reflectance spectrum of sublimating Water ice particles containing NH4-Nontronite and mixed with Magnetite, Antigorite, Dolomite at 173 K (t=39h)
- Vis-NIR reflectance spectrum of a sublimation residue made of Magnetite, NH4-Nontronite, Antigorite, Dolomite at 173 K (t=59h)
- Vis-NIR reflectance spectrum of a sublimation residue made of Magnetite, NH4-Nontronite, Antigorite, Dolomite at 173 K (t=80h)
- Vis-NIR reflectance spectrum of a sublimation residue made of Magnetite, NH4-Nontronite, Antigorite, Dolomite at 173 K (t=110h)
- Vis-NIR reflectance spectrum of a sublimation residue made of Magnetite, NH4-Nontronite, Antigorite, Dolomite at 173 K (t=133h)
- Vis-NIR reflectance spectrum of Matt Black Aluminum Foil Tape at 296 K
- Vis-NIR reflectance spectrum of sublimating Water ice particles 67±31μm containing 1wt% Nontronite in intra-mixture at 175 K (t=68h)
- Vis-NIR reflectance spectrum of several millimeters thick sublimation residue made of Nontronite at 213 K (t=88h)
- Vis-NIR reflectance spectrum of sublimating Water ice particles 67±31μm containing 1wt% Nontronite in intra-mixture at 215 K (t=89h)
- Vis-NIR reflectance spectrum of sublimating Water ice particles 67±31μm containing 1wt% Nontronite in intra-mixture at 217 K (t=90h)
- Vis-NIR reflectance spectrum of sublimating Water ice particles 67±31μm containing 1wt% Nontronite in intra-mixture at 219 K (t=91h)
- Vis-NIR reflectance spectrum of sublimating Water ice particles 67±31μm containing 1wt% Nontronite in intra-mixture at 221 K (t=92h)
- Vis-NIR reflectance spectrum of a 1-mm thick sublimation residue made of Nontronite at 223 K (t=93h)
- Vis-NIR reflectance spectrum of a 1-mm thick sublimation residue made of Nontronite at 225 K (t=94h)
- Vis-NIR reflectance spectrum of a 1-mm thick sublimation residue made of Nontronite at 231 K (t=97h)
- Vis-NIR reflectance spectrum of a 1-mm thick sublimation residue made of Nontronite at 241 K (t=103h)
- Vis-NIR reflectance spectrum of a 1-mm thick sublimation residue made of Nontronite at 261 K (t=113h)
- Vis-NIR reflectance spectrum of a 1-mm thick sublimation residue made of Nontronite at 297 K (t=132h)