Identification of gaseous SO2 and new upper limits for other gases on Io
John C. Pearl,Rudolf A. Hanel,Virgil G. Kunde,William C. Maguire,K. Fox,S. K. Gupta,Cyril Ponnamperuma,F. Raulin +7 more
Reads0
Chats0
TLDR
In this paper, the identification of gaseous sulfur dioxide on Io by Voyager 1 is reported, and preliminary upper limits for other atmospheric gases are presented, with a depletion of hydrogen, carbon and nitrogen.Abstract:
The identification of gaseous sulfur dioxide on Io by Voyager 1 is reported, and preliminary upper limits for other atmospheric gases are presented. Averaged spectra taken by the Voyager IRIS experiment in the range of 1,000 to 1,200/cm are interpreted as containing three fundamental sulfur dioxide bands, with intensities most nearly corresponding to an atmospheric model with a sulfur dioxide abundance of 0.2 cm atm. Upper limits for COS, CS2, SO3, H2S, CO2, O3, N2O, H2O, CH4, NH3 and HC1, not detected in the spectra, were calculated on the basis of the radiative transfer equation for temperatures of 130 and 250 K; a depletion of hydrogen, carbon and nitrogen is noted. It is suggested that a SO2 outgassing from a cooling sulfur extrusion is the major source of the observed atmospheric SO2.read more
Citations
More filters
Journal ArticleDOI
Infrared observations of the saturnian system from voyager 1.
Rudolf A. Hanel,Barney J. Conrath,F. M. Flasar,V. G. Kunde,William C. Maguire,John C. Pearl,J. A. Pirraglia,Robert E. Samuelson,L. Herath,Matthew A. Allison,Dale P. Cruikshank,Daniel Gautier,Peter J. Gierasch,Linda J. Horn,R. Koppany,Cyril Ponnamperuma +15 more
TL;DR: During the passage of Voyager 1 through the Saturn system, the infrared instrument acquired spectral and radiometric data on Saturn, the rings, and Titan and other satellites, implying a depletion of helium in the atmosphere of Saturn relative to that of Jupiter.
Journal ArticleDOI
Nonlinear standing Alfvén wave current system at Io: Theory
TL;DR: In this article, a nonlinear analytical model of the Alfven current tubes continuing the currents through Io (or rather its ionosphere) generated by the unipolar inductor effect due to Io's motion relative to the magnetospheric plasma was presented.
Book ChapterDOI
Exploring The Saturn System In The Thermal Infrared: The Composite Infrared Spectrometer
F. M. Flasar,V. G. Kunde,Mian M. Abbas,R. K. Achterberg,Peter A. R. Ade,Antonella Barucci,B. Bezard,Gordon L. Bjoraker,John C. Brasunas,S. B. Calcutt,R. W. Carlson,C. J. Cesarsky,Barney J. Conrath,Angioletta Coradini,Régis Courtin,Athena Coustenis,S. Edberg,Scott G. Edgington,Chiara Ferrari,Thierry Fouchet,D. Gautier,Peter J. Gierasch,K. Grossman,Patrick G. J. Irwin,D. E. Jennings,E. Lellouch,A. A. Mamoutkine,A. Marten,J. P. Meyer,Conor A. Nixon,Glenn S. Orton,T. C. Owen,John C. Pearl,Renée Prangé,François Raulin,Peter L. Read,Paul N. Romani,Robert E. Samuelson,M. E. Segura,Mark R. Showalter,Amy A. Simon-Miller,M. D. Smith,John R. Spencer,Linda Spilker,Fredric W. Taylor +44 more
TL;DR: The Composite Infrared Spectrometer (CIRS) is a remote-sensing Fourier transform spectrometer on the Cassini orbiter that measures thermal radiation over two decades in wavenumber, with a spectral resolution that can be set from 0.5 to 15.5 cm− 1.
Journal ArticleDOI
Direct plasma measurements in the Io torus and inner magnetosphere of Jupiter
Fran Bagenal,J. D. Sullivan +1 more
TL;DR: In this article, the details of positive ion measurements made in the inner magnetosphere are discussed and an analysis of these measurements to obtain plasma composition, flow speeds, and temperatures is given.
Journal ArticleDOI
Overview of the Voyager ultraviolet spectrometry results through Jupiter encounter
A. L. Broadfoot,Bill R. Sandel,D. E. Shemansky,J. C. Mcconnell,G. R. Smith,Jay B. Holberg,Sushil K. Atreya,Thomas M. Donahue,Darrell F. Strobel,Jean-Loup Bertaux +9 more
TL;DR: The observations of a number of objects by the Voyager EUV instruments are summarized in this article, and the summary is considered to demonstrate the wide ranging application of the EUV spectroscopy and emphasizes the continuing importance of the search and discovery nature of spectroscopic techniques.
References
More filters
Journal ArticleDOI
Extreme ultraviolet observations from Voyager 1 encounter with Jupiter
A. L. Broadfoot,M. J. S. Belton,P. Z. Takacs,Bill R. Sandel,Donald E. Shemansky,Jay B. Holberg,Joseph M. Ajello,Sushil K. Atreya,Thomas M. Donahue,H. W. Moos,Jean-Loup Bertaux,J. E. Blamont,Darrell F. Strobel,John C. McConnell,Alexander Dalgarno,Richard Goody,Michael B. McElroy +16 more
TL;DR: The observed resonance scattering of solar hydrogen Lyman α by the atmosphere of Jupiter and the solar occultation experiment suggest a hot thermosphere (≥ 1000 K) wvith a large atomic hydrogen abundance.
Journal ArticleDOI
The jupiter system through the eyes of voyager 1.
Bradford A. Smith,Laurence A. Soderblom,Torrence V. Johnson,Andrew P. Ingersoll,Stewart A. Collins,Eugene M. Shoemaker,Garry E. Hunt,Harold Masursky,Michael H. Carr,Merton E. Davies,A. F. Cook,Joseph M. Boyce,G. Edward Danielson,Tobias Owen,Carl Sagan,Reta Beebe,Joseph Veverka,Robert G. Strom,John F. McCauley,David Morrison,G. A. Briggs,Verner E. Suomi +21 more
TL;DR: The cameras aboard Voyager 1 have provided a closeup view of the Jupiter system, revealing heretofore unknown characteristics and phenomena associated with the planet's atmosphere and the surfaces of its five major satellites.
Journal ArticleDOI
Melting of Io by Tidal Dissipation
TL;DR: The dissipation of tidal energy in Jupiter's satellite Io is likely to have melted a major fraction of the mass, and consequences of a largely molten interior may be evident in pictures of Io's surface returned by Voyager I.
Related Papers (5)
Spectral evidence for SO2 frost or adsorbate on Io's surface
The jupiter system through the eyes of voyager 1.
Bradford A. Smith,Laurence A. Soderblom,Torrence V. Johnson,Andrew P. Ingersoll,Stewart A. Collins,Eugene M. Shoemaker,Garry E. Hunt,Harold Masursky,Michael H. Carr,Merton E. Davies,A. F. Cook,Joseph M. Boyce,G. Edward Danielson,Tobias Owen,Carl Sagan,Reta Beebe,Joseph Veverka,Robert G. Strom,John F. McCauley,David Morrison,G. A. Briggs,Verner E. Suomi +21 more