Abstract
The spectrum of the Venus dayglow between 1280 and 1380 A has been measured in high‐resolution with the International Ultraviolet Explorer. Seven exposures which were made with the short wavelength camera in the high‐dispersion mode using the large aperture were combined to give a total exposure time of 309 min. The atomic oxygen lines at 1302.2, 1304.9, 1306.0, and 1355.6 A are present. In addition, the (14,3) and (14,4) bands of the carbon monoxide fourth positive system at 1317 and 1354 A respectively are identified. These bands are compared with synthetic spectra, showing the excitation mechanism to be fluorescent scattering of solar Lyman alpha radiation.
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