Detection of a Deep 3-µm Absorption Feature in the Spectrum of Amalthea (JV)-Reference-Cited by-同舟云学术

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

Published:2004-12-24 Issue:5705 Volume:306 Page:2224-2227
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Takato Naruhisa¹²³,Bus Schelte J.¹²³,Terada Hiroshi¹²³,Pyo Tae-Soo¹²³,Kobayashi Naoto¹²³

Affiliation:

1. Subaru Telescope, National Astronomical Observatory of Japan, 650 North Àohoku Place, Hilo, Hawaii 96720, USA.

2. Institute for Astronomy, University of Hawaii, 640 North Àohoku Place, Hilo, Hawaii 96720, USA.

3. Institute of Astronomy, Graduate School of Science, University of Tokyo, 2-21-1 Osawa, Mitaka, Tokyo 181-0015, Japan.

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.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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