6 citations · 9 across the 6 of their papers we have counts for
11 papers
Cosmochemistry, Cosmology and Fundamental Constants: High-Resolution Spectroscopy of Damped Lyman-Alpha Systems
R. Quast, D. Reimers, A. Smette +4
Spectroscopy of QSO absorption lines provides essential observational input for the study of nucleosynthesis and chemical evolution of galaxies at high redshift. But new observatio…
The HeII Lyman alpha forest: evaluation of simulated data
C. Fechner, D. Reimers
Using an artificial HI Lyman alpha spectrum we simulate the corresponding HeII forest with fixed values of eta and a Doppler parameter consisting of a thermal and a turbulent part.…
FUSE observations of the HeII Lyman alpha forest towards HS1700+6416
D. Reimers, C. Fechner, G. Kriss +5
We present FUSE observations of the HeII Lyman alpha forest in the redshift range 2.3 < z < 2.7 towards HS1700+6416. Between October 2002 and February 2003, the brightness of the Q…
Identification of a DO white dwarf and a PG1159 star in the ESO SN Ia progenitor survey (SPY)
K. Werner, T. Rauch, R. Napiwotzki +3
We present high-resolution VLT spectra of a new helium-rich DO white dwarf and a new PG1159 star, which we identified in the ESO SPY survey. We performed NLTE model atmosphere anal…
HE0241-0155 - Evidence for a large scale homogeneous field in a highly magnetic white dwarf
Dieter Reimers, Stefan Jordan, Norbert Christlieb
In the course of the Hamburg/ESO survey we have discovered a white dwarf whose spectrum exhibits many similarities with the prototype of magnetic white dwarfs Grw+708247.…
Double degenerates from the supernova Ia progenitor survey (SPY)
C. Karl, R. Napiwotzki, U. Heber +4
We report on follow-up observations of double degenerate (DD) white dwarfs from the Supernovae Ia Progenitor Survey (SPY). Orbital parameters of four systems, including a massive s…