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astro-ph2007★ 53 cited
The pulsation modes of the pre-white dwarf PG 1159-035
J. E. S. Costa, S. O. Kepler, D. E. Winget +74
PG 1159-035, a pre-white dwarf with T_eff=140,000 K, is the prototype of both two classes: the PG1159 spectroscopic class and the DOV pulsating class. Previous studies of PG 1159-0…
astro-ph2007★ 57 cited
Strong limits on the DFSZ axion mass with G117-B15A
A. Bischoff-Kim, M. H. Montgomery, D. E. Winget
We compute rates of period change (Pdots) for the 215s mode in G117-B15A and the 213s mode in R548, first for models without axions, and then for models with axions of increasing m…