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IUE: un observatoire en orbite.

Gry, Cecile

The acquisition of ultraviolet data by the geosynchronous IUE satellite since its launch in 1978 is discussed, with emphasis on the procedure for obtaining IUE data from the Vilspa station near Madrid. Images are obtained by IUE every two hours on the average, with exposures lasting from 0.4 sec to 21 hours. UV spectra are derived from the images …

Observations de comètes faibles avec IUE.

Festou, M.

Spectral observations of eight comets, including seven periodic comets, made in the range 1150-3400 A with the IUE satellite are presented. Comet Bradfield, the sole nonperiodic comet observed, is found to exhibit strong OH and atomic hydrogen emissions from the decomposition of water, along with oxygen, carbon, sulfur, carbon disulfide, C2 and CO…