3 papers
astro-ph1998
Multi-Element Doppler Imaging of the Ap star epsilon Ursae Majoris
T. Lueftinger, R. Kuschnig, W. W. Weiss
The surface distribution of five elements: iron, chromium, titanium, magnesium and manganese on the magnetic A0pCr star epsilon UMa, have been calculated using the Doppler imaging…
astro-ph1998
iota Cas: Multi-element Doppler imaging and magnetic field geometry
R. Kuschnig, G. A. Wade, G. M. Hill +1
In order to clarify the role of the magnetic field in generating abundance inhomogeneities in the atmospheres of Ap stars, we present new abundance Doppler images and an approximat…
astro-ph1998
Doppler Imaging of Ap Stars
R. Kuschnig
Doppler imaging, a technique which inverts spectral line profile variations of an Ap star into a two-dimensional abundance maps, provides new observational constraints on diffusion…