442 citations · 547 across the 13 of their papers we have counts for
13 papers
Observational constraints on the evolutionary connection between PG 1159 stars and DO white dwarfs
S. D. Huegelmeyer, S. Dreizler, K. Werner +3
The Sloan Digital Sky Survey has provided spectra of a large number of new PG 1159 stars and DO white dwarfs. This increase in known hot H-deficient compact objects significantly i…
FUSE Spectroscopy of the DAO-type Central Star LS V+4621: Looking for the Photosphere in the Sea of Interstellar Absorption
M. Ziegler, T. Rauch, K. Werner +2
The far-ultraviolet spectrum of the DAO White Dwarf LS V+4621, the exciting star of the possible planetary nebula Sh 2-216,is strongly contaminated by absorption features from the…
HST and FUSE Spectroscopy of the DAO-type Central Star LS V+4621
T. Rauch, M. Ziegler, K. Werner +1
The DAO-type white dwarf LS V+4621 is the hydrogen-rich central star of the possible planetary nebula Sh 2-216. We have taken high-resolution, high-S/N ultraviolet spectra with STI…
Elastic scattering of low energy pions by nuclei and the in-medium isovector pi N amplitude
E. Friedman, M. Bauer, J. Breitschopf +9
Measurements of elastic scattering of 21.5 MeV pi+ and pi- by Si, Ca, Ni and Zr were made using a single arm magnetic spectrometer. Absolute calibration was made by parallel measur…
Detection of non-radial g-mode pulsations in the newly discovered PG1159 star HE 1429-1209
T. Nagel, K. Werner
We performed time-series photometry of the PG1159-type star HE 1429-1209, which was recently discovered in the ESO SPY survey. We show that the star is a low-amplitude (about 0.05…
AcDc - A new code for the NLTE spectral analysis of accretion discs: application to the helium CV AM CVn
T. Nagel, S. Dreizler, T. Rauch +1
We present a recently developed code for detailed NLTE calculations of accretion disc spectra of cataclysmic variables and compact X-ray binaries. Assuming a radial structure of a…