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astro-ph2000
The effect of 3-He diffusion on the pulsational spectra of DBV models
M. H. Montgomery, T. S. Metcalfe, D. E. Winget
We consider envelopes of DB white dwarfs which are not composed of pure 4-He, but rather a mixture of 3-He and 4-He. Given this assumption, the same diffusive processes which produ…
astro-ph2000★ 82 cited
Evolutionary Timescale of the DAV G117-B15A: The Most Stable Optical Clock Known
S. O. Kepler, Anjum Mukadam, D. E. Winget +5
We observe G117-B15A, the most precise optical clock known, to measure the rate of change of the main pulsation period of this blue-edge DAV white dwarf. Even though the obtained v…