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Non-linear pulsations in Wolf-Rayet stars
S. Wende, W. Glatzel, S. Schuh
Numerical simulations of the evolution of strange-mode instabilities into the non-linear regime have been performed for a wide range of stellar parameters for Wolf-Rayet stars. It…
Towards a dynamical mass of a PG 1159 star: radial velocities and spectral analysis of SDSS J212531-010745
B. Beeck, S. Schuh, T. Nagel +1
The evolutionary scenarios which are commonly accepted for PG 1159 stars are mainly based on numerical simulations, which have to be tested and calibrated with real objects with kn…
Time-resolved spectroscopy of the planet-hosting sdB pulsator V391 Pegasi
S. Schuh, R. Kruspe, R. Lutz +1
The subdwarf B (sdB) star V391 Peg oscillates in short-period p modes and long-period g modes, making it one of the three known hybrids among sdBs. As a by-product of the effort to…
Long-term EXOTIME photometry and follow-up spectroscopy of the sdB pulsator HS 0702+6043
R. Lutz, S. Schuh, R. Silvotti +2
Pulsating subdwarf B (sdB) stars oscillate in short-period p-modes or long-period g-modes. HS0702+6043 (DW Lyn) is one of a few objects to show characteristics of both types and is…
Search for sdB/WD pulsators in the Kepler FOV
R. Silvotti, G. Handler, S. Schuh +2
In this article we present the preliminary results of an observational search for subdwarf B and white dwarf pulsators in the Kepler field of view, performed using the DOLORES came…