The Behavior of HgMn Stars in the Far UV—Paper 21: HD 29589

The analysis of two spectra of the Mn Hg star HD 29589 recorded by the SWP camera on board the International Ultraviolet Explorer does not reveal variations of the far-ultraviolet flux over a thirteen years time interval. The TESS lightcurve of HD 29589 shows a complex pattern of oscillations with variable amplitudes and probably several periods. A very strong resonance line of Ga ii is present at 1414.40 Å and confirms the Hg Mn status of HD 29589. A P Cygni profile at 1793.20 Å on SWP04948 could correspond to the resonance line of Sr ii at 1793.09 Å and indicate transient mass loss.