1987
DOI: 10.1086/184950
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Detection of neutral oxygen and sulfur emissions near Io using IUE

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Cited by 53 publications
(33 citation statements)
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“…It is composed primarily of SO 2 (Lellouch et al 1990(Lellouch et al , 1992 and SO (Lellouch et al 1996). The atomic byproducts of SO 2 , sulfur and oxygen, were first identified in the Io plasma torus (Brown 1981;Durrance, Feldman, & Weaver 1983) and more recently detected in Io's emission-line spectrum (Ballester et al 1987). Sodium (Burger & Schneider 1998;Geissler et al 1999;Bouchez, Brown, & Schneider 2000) and potassium (Brown 2001) are also present at much lower abundance than sulfur and oxygen.…”
Section: Introductionmentioning
confidence: 99%
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“…It is composed primarily of SO 2 (Lellouch et al 1990(Lellouch et al , 1992 and SO (Lellouch et al 1996). The atomic byproducts of SO 2 , sulfur and oxygen, were first identified in the Io plasma torus (Brown 1981;Durrance, Feldman, & Weaver 1983) and more recently detected in Io's emission-line spectrum (Ballester et al 1987). Sodium (Burger & Schneider 1998;Geissler et al 1999;Bouchez, Brown, & Schneider 2000) and potassium (Brown 2001) are also present at much lower abundance than sulfur and oxygen.…”
Section: Introductionmentioning
confidence: 99%
“…Despite the recent advances in quantifying Io's atmosphere, including investigating the inhomogeneity and impact of volcanic activity (Feldman et al 2000;McGrath et al 2000;Spencer et al 2000), analyzing the air glow (Geissler et al 1999), and resolving the morphology (Roesler et al 1999;Retherford et al 2000), and the fact that several sets of sulfur and oxygen emission-line data have been acquired and analyzed (Ballester 1989;McGrath et al 2000;Oliversen et al 2001;Wolven et al 2001), the abundances are still not well constrained. Various observational measurements and theoretical models have placed loose bounds on the sulfur column density (N S ).…”
Section: Introductionmentioning
confidence: 99%
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“…Important information on the atmosphere comes from observations in the ultraviolet (UV) wavelength range. Papers [Ballester et , 1987;Clarke et al, 1994;Durrance et al, 1995;Fox et al, 1997] report on observations of Io and its vicinity in the UV lines of oxygen OI and sulfur SI atoms. However, small spatial resolution precluded the study of the spatial structure of this radiation in these experiments.…”
Section: Introductionmentioning
confidence: 99%