Measurements of magnetic fields in intermediate mass stars with disks using FORS1 at the VLT
Authors:
          S. Hubrig, ESO,
          M. Sch

Abstract:
          Although magnetic fields in intermediate mass stars with disks are believed to play a crucial role in controlling accretion and winds, there is still no observational evidence demonstrating the strength, extent, and geometry of their magnetic fields. Our recent magnetic field observations demonstrate that magnetic fields in Herbig Ae stars should be rather weak, of the order of a few hundred Gauss and less, and a definite detection of such weak magnetic fields in faint objects requires the collecting areas of large aperture telescopes of 8-10 m class coupled with highly efficient spectrographs to achieve a sufficiently high signal-to-noise ratio.