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astro-ph2004★ 24 cited
Do weak magnetic fields prevent hydrogen from accreting onto metal-line white dwarf stars?
Susanne Friedrich, Stefan Jordan, Detlev Koester
The widely accepted assumption is that metals detected in the spectra of a few cool helium-rich white dwarfs cannot be of primordial origin and therefore must be accreted from the…
astro-ph2000
Cool helium-rich white dwarfs from the Hamburg/ESO Survey
S. Friedrich, D. Koester, N. Christlieb +2
We present an analysis of 40 cool helium-rich white dwarfs found in the Hamburg/ESO survey. They were selected for follow-up spectroscopy because of their U-B colour below -0.18, t…
astro-ph1998
On the evolution of shape in N-body simulations
Ch. Theis, R. Spurzem
A database on shape evolution of direct N-body models formed out of cold, dissipationless collapse is generated using GRAPE and HARP special purpose computers. Such models are impo…