329 citations · 4.4k across the 88 of their papers we have counts for
Showing 2006Show all
3 papers · 1 filter
astro-ph2006★ 50 cited
New DQ white dwarfs in the Sloan Digital Sky Survey DR4: confirmation of two sequences
D. Koester, S. Knist
Using photometric selection criteria, and in a final step visual inspection of spectra, we find 65 DQ white dwarfs in the Data Release 4 of the Sloan Digital Sky Survey. 37 of thes…
astro-ph2006★ 134 cited
The accretion-diffusion scenario for metals in cool white dwarfs
D. Koester, D. Wilken
We calculated diffusion timescales for Ca, Mg, Fe in hydrogen atmosphere white dwarfs with temperatures between 5000 and 25000 K. With these timescales we determined accretion rate…
astro-ph2006★ 29 cited
Analysis of IUE spectra of helium-rich white dwarf stars
B. G. Castanheira, S. O. Kepler, G. Handler +1
We studied the class of DB white dwarf stars, using re-calibrated UV spectra for thirty four DBs obtained with the IUE satellite. By comparing the observed energy distributions wit…