HD 76431 - An evolved hot subdwarf with variable magnetic field?
  We measured the magnetic field of the bright, evolved hot subdwarf HD 76431 by means of high-resolution spectropolarimetry. In contrast to previous measurements we were not able to detect a significant magnetic field. We discuss the possibility that this field may be variable. Our search for a possible companion star to HD 76431 led to inconclusive results. 
G. Chountonov, S. Geier
astro-ph.SR