Report

Detection of a Deep 3-µm Absorption Feature in the Spectrum of Amalthea (JV)

+ See all authors and affiliations

Science  24 Dec 2004:
Vol. 306, Issue 5705, pp. 2224-2227
DOI: 10.1126/science.1105427

You are currently viewing the abstract.

View Full Text

Abstract

Near-infrared spectra of Jupiter's small inner satellites Amalthea and Thebe are similar to those of D-type asteroids in the 0.8- to 2.5-micrometer wavelength range. A deep absorption feature is detected at 3 micrometers in the spectra of the trailing side of Amalthea, which is similar to that of the non-ice components of Callisto and can be attributed to hydrous minerals. These surface materials cannot be explained if the satellite formed at its present orbit by accreting from a circumjovian nebula. Amalthea and Thebe may be the remnants of Jupiter's inflowing building blocks that formed in the outer part or outside of the circumjovian nebula.

View Full Text

Related Content