Abstract
The analysis of nine spectra of the Bp SiSrCr star HD 133029 recorded by the SWP camera on board the International Ultraviolet Explorer reveals variations of the far-ultraviolet spectral energy distribution over a time interval of four days and four hours. Variations are present shortwards of 1700 Å which can be partly attributed to variations of lines and continuum of Si ii, Cr ii and Fe ii. This suggests that these elements are not distributed in a uniform manner over the stellar surface. The FUV variations occur in antiphase with the variations of the optical brightness which probably reflects redistribution of the FUV flux toward optical wavelengths as the star rotates.
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