Absorption bands in the spectrum of Io. (original) (raw)

NASA/ADS

;

• Jones, T. J. ;
• Pilcher, C. B.

Abstract

Near-infrared spectra of Io in the region from 2.8 to 4.2 microns are reported which show distinct absorption features, the most notable at 4.1 microns. Frozen volatiles or atmospheric gases cannot account for these absorptions, nor do they resemble those seen in common silicate rocks. Several candidate substances, most notably nitrate and carbonate salts, show absorption features in this spectral region; the deepest band in the spectrum may be a nitrate absorption. The satellite surface is shown to be anhydrous, as indicated by the absence of the 3-micron bound water band.

Publication:

The Astrophysical Journal

Pub Date:

October 1978

DOI:

10.1086/182800

Bibcode:

1978ApJ...225L..89C

Keywords:

• Absorption Spectra;
• Io;
• Jupiter (Planet);
• Near Infrared Radiation;
• Astronomical Spectroscopy;
• Photoabsorption;
• Silicates;
• Sodium Carbonates;
• Sodium Nitrates;
• Spectral Reflectance;
• ABSORPTION SPECTRA;
• SPECTRUM;
• IO;
• INFRARED;
• ROCKS;
• SILICATES;
• NITRATES;
• JUPITER;
• SATELLITES;
• GASES;
• REFLECTANCE;
• PHOTOMETRY;
• ATMOSPHERE;
• CARBONATES;
• SALTS;
• SURFACE;
• WATER;
• Lunar and Planetary Exploration; Satellites of Jupiter;
• Infrared Spectra:Io