Optical evolution of laboratory-produced organics - Applications to Phoebe, Iapetus, outer belt asteroids and cometary nuclei
Abstract
Optical and NIR spectra (0.3 - 2.5 μm) of organic materials, synthesized in the laboratory by ion beam bombardment, are presented. The spectral response of the organics changes as the ion fluence increases. They become darker and darker with increasing fluence. The authors suggest that bombardment by solar ions may produce both organic materials similar to those on D-type asteroids (and on the Iapetus leading hemisphere) and carbonaceous materials similar to those on C-type asteroids (and on Phoebe). The relevance of these experimental results in understanding the darkness of (some?) cometary nuclei is also outlined.
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- October 1987
- Bibcode:
- 1987A&A...184..333A
- Keywords:
-
- Asteroid Belts;
- Comet Nuclei;
- Iapetus;
- Ion Irradiation;
- Organic Materials;
- Phoebe;
- Ion Beams;
- Room Temperature;
- Solar System;
- PLANETS;
- COMETS;
- COMET NUCLEI;
- ASTEROIDS;
- SATELLITES;
- PHOEBE;
- IAPETUS;
- OPTICAL PROPERTIES;
- EVOLUTION;
- ORGANIC MATERIAL;
- LABORATORY STUDIES;
- SPECTRA;
- IONS;
- BOMBARDMENT;
- D ASTEROIDS;
- C ASTEROIDS;
- COMPARISONS;
- CARBONACEOUS MATERIAL;
- IRRADIATION;
- REFLECTANCE;
- TRANSMISSION;
- EXPERIMENTS;
- ANALOGS;
- SIMULATIONS;
- HYDROCARBONS;
- COLOR;
- SATURN;
- Lunar and Planetary Exploration; Planets