New upper limits for atmospheric constituents on Io

Uwe - Fink, Harold P. Larson, Thomas N. Gautier

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

A spectrum of the satellite of Jupiter, Io, from 0.86 to 2.7 μm at a resolution of 3.36 cm-1 and a signal to rms noise ratio of 120 is presented. No absorptions due to any atmospheric constituents on Io could be found on the spectrum. Upper limits of 0.12 cm-atm for NH3, 0.12cm-atm for CH4, 0.4cm-atm for N2O, and 24cm-atm for H2S were determined. Laboratory spectra of ammonia frosts as a function of temperature were compared with the spectrum of Io and showed as a frost not to be present at the surface of Io. A search for possible resonance lines of carbon, silicon, and sulfur as well as the 1.08μm line of helium proved negative and upper emission limits of 60, 18, 27, and 60 kilorayleighs, respectively, were established for these lines.

Original languageEnglish (US)
Pages (from-to)439-446
Number of pages8
JournalIcarus
Volume27
Issue number3
DOIs
StatePublished - 1976

Fingerprint

Io
frost
Jupiter (planet)
resonance lines
Jupiter
signal-to-noise ratio
helium
silicon
ammonia
signal to noise ratios
sulfur
carbon
temperature

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics

Cite this

New upper limits for atmospheric constituents on Io. / Fink, Uwe -; Larson, Harold P.; Gautier, Thomas N.

In: Icarus, Vol. 27, No. 3, 1976, p. 439-446.

Research output: Contribution to journalArticle

Fink, Uwe - ; Larson, Harold P. ; Gautier, Thomas N. / New upper limits for atmospheric constituents on Io. In: Icarus. 1976 ; Vol. 27, No. 3. pp. 439-446.
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