58 citations · 99 across the 5 of their papers we have counts for
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The baryon density at z=0.9-1.9 - Tracing the warm-hot intergalactic medium with broad Lyman alpha absorption
N. Prause, D. Reimers, C. Fechner +1
We present an analysis of the Lyman alpha forests of five quasar spectra in the near UV. Properties of the intergalactic medium (IGM) at an intermediate redshift interval (0.9 < z…
The Evolution of Lyman alpha Absorbers in the Redshift Range 0.5<z<1.9
E. Janknecht, D. Reimers, S. Lopez +1
We investigate the evolution and the statistical properties of the Lya absorbers of the intergalactic medium (IGM) in the largely unexplored redshift range z=0.5-1.9. We use high-r…
Nitrogen-deficient and iron-rich associated absorbers with oversolar metallicities towards the quasar HE0141-3932
S. A. Levshakov, I. I. Agafonova, D. Reimers +3
HE0141-3932 (zem=1.80) is a bright blue radio-quite quasar which reveals an emission line spectrum with an unusually weak Ly-alpha line. In addition, large redshift differences (De…
HE 0141-3932: a bright QSO with an unusual emission line spectrum and associated absorption
D. Reimers, E. Janknecht, C. Fechner +3
HE 0141-3932 (zem = 1.80) is a bright blue radio-quite quasar with an unusually weak Ly-alpha emission line. Large redshift differences (Delta z = 0.05) are observed between high i…
A high-resolution study of the evolution of the Lyman alpha forest in the redshift interval 0.9 < z < 1.7
Eckart Janknecht, Robert Baade, Dieter Reimers
Spectroscopy with HST/STIS Echelle and VLT/UVES of the bright QSO HE 0515-4414 (z_em =1.73, B = 15.0) offers for the first time the opportunity to study the Lyman alpha forest in t…