This mixture was prepared as a spectral analogue for Ceres surface material. We measured the reflectance spectra (from 0.5 to 4 µm) of the mixture pure (at room temperature) and mixed with water ice particles (at 173 K), as well as during and after sublimation of the water ice under high vacuum (at 173 K). The spectrum of the surface obtained after sublimation exhibits a blue spectral slope.

Dry mixtures (called "sublimate residues") of sub-micrometer size opaque pyrrhotite (Fe1-xS) grains with ammonium (NH4+) salts (chloride, sulfate, formate, carbamate, citrate) were prepared by sublimation of ice-dust mixtures. Reflectance spectra (from 0.4 to 4 µm) of these mixtures were measured at 173 K under high vacuum (pressure lower than 10^-5 mbar).

NIR reflectance spectra of AMES tholins (from 90% N2:10% CH4) pure and mixed with different liquids and solids (CH4, C2H6 and CH3CN+C2N6) at temperatures from ambient to 88 K. Spectra were recorded upon cooling while the liquid was progressively added. Freezing occured at some point.

An experimental facility has been set up to acquire infrared spectra of pure water ices with controlled grain sizes ranging from 80 to 700 µm and temperatures ranging from 80 to 140 K at 0.01 mbar. Forty-seven near IR spectra (1.0–5.0 µm), selected among the total acquired spectra, permit us to determine how spectral characteristics between 1.0 and 1.8 µm depend on both grain size and temperature.

NIR bidirectional reflection spectra (i=0-70°/e=0-70°/az=180°) of Smectite STx-1 (2µm grains) at 263K and ambient pressure

Vis-NIR reflectance spectra of the Udokan basalts altered in cold and arid environment (Siberia). The samples were collected along lava flow. The experiment contains spectra of the surface of the samples.

Chloride molality varying from 0.03 to 10 m; temperature varying from 25 to 450 °C

This database provides access to the data measured in the Laboratory for Outflow Studies of Sublimating Materials (LOSSy) of the University of Bern. In the laboratory, we are preparing and analyzing analogs of planetary or cometary surfaces composed of pure or mixed ices or dust-ice mixtures to study their optical properties and dynamic evolution under simulated conditions. The collected data can be used to predict photometric properties or to interpret observational data of icy-dust planetary...

NIR and MIR reflectance spectra of AMES tholins (from 90% $N_2$:10% $CH_4$ gas) after synthesis, at ambient temperature