Publications (6)
Large-scale magnetic field of the G8 dwarf xi Bootis A
P. Petit, J. -F. Donati, M. Auriere +7
We investigate the magnetic geometry of the active G8 dwarf xi Bootis A, from spectropolarimetric observations obtained in 2003 with the MuSiCoS echelle spectropolarimeter at the T…
Why are some A stars magnetic, while most are not?
G. A. Wade, J. Silvester, K. Bale +21
A small fraction of intermediate-mass main sequence (A and B type) stars have strong, organised magnetic fields. The large majority of such stars, however, show no evidence for mag…
Weak magnetic fields in Ap/Bp stars: Evidence for a dipole field lower limit and a tentative interpretation of the magnetic dichotomy
M. Auriere, G. A. Wade, J. Silvester +22
We have investigated a sample of 28 well-known spectroscopically-identified magnetic Ap/Bp stars, with weak, poorly-determined or previously undetected magnetic fields, with the ai…
A search for magnetic fields in the variable HgMn star Andromedae
G. A. Wade, M. Auriere, S. Bagnulo +8
With this work, we have conducted an extensive search for magnetic fields in the photosphere of ~And. We have acquired new circular polarisation spectra with the MuSiCoS and ES…
Photospheric magnetic field and surface differential rotation of the FK Com star HD 199178
P. Petit, J. -F. Donati, J. M. Oliveira +11
We present spectropolarimetric observations of the FK Com star HD 199178 obtained between 1998 December and 2003 August at the Telescope Bernard Lyot (Observatoire du Pic du Midi,…
Determinationm of Effective Temperatures and Luminosities of Rotating Stars
A. Gillich, R. Deupree, C. Lovekin +2
Spectral energy distributions for models of arbitrarily rotating stars are computed using two dimensional rotating stellar models, NLTE plane parallel model atmospheres, and a code…