Detection of silicate emission features in the 8- to 13-μm spectra of main belt asteroids
Abstract
We present 8.0-13.0 micron spectra ( Δλ/λ = 0.02-0.03) for six main belt asteroids, which range from 58 to 220 km in diameter and sample the five principal taxonomic classes (C, S, M, R and E). Narrow, well-defined silicate emission features are present on two of the asteroids, the C-type 19 Fortuna and the M-type 21 Lutetia. No comparable emission features are observed on the S-types 11 Parthenope and 14 Irene, the R-type 349 Dembowska or the E-type 64 Angelina.
- Publication:
-
Icarus
- Pub Date:
- December 1983
- DOI:
- 10.1016/0019-1035(83)90160-4
- Bibcode:
- 1983Icar...56..393F
- Keywords:
-
- Asteroids;
- Infrared Spectra;
- Planetary Composition;
- Silicates;
- Thermal Emission;
- Irradiance;
- Planetary Surfaces;
- Vibrational Spectra