Absorption bands in the spectrum of Io

Details Absorption bands in the spectrum of Io Absorption bands in the spectrum of Io

Oct 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978apj...225l..89c&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor, vol. 225, Oct. 15, 1978, p. L89-L92.

Astronomy and Astrophysics

Astrophysics

14

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

Scientific paper

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.

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