activity
19962019
most citedThe Hamburg/ESO R-process Enhanced Star survey (HERES) II. Spectroscopic analysis of the survey sample

504 citations · 2.3k across the 30 of their papers we have counts for

collaborators

30 papers

astro-ph.SR2019★ 91 cited

The ESO supernovae type Ia progenitor survey (SPY)

R. Napiwotzki, C. A. Karl, T. Lisker +13

Close double degenerate binaries are one of the favoured progenitor channels for type Ia supernovae, but it is unclear how many suitable systems there are in the Galaxy. We report…

astro-ph.IM2014★ 9 cited

Future mmVLBI Research with ALMA: A European vision

R. P. J. Tilanus, T. P. Krichbaum, J. A. Zensus +165

Very long baseline interferometry at millimetre/submillimetre wavelengths (mmVLBI) offers the highest achievable spatial resolution at any wavelength in astronomy. The anticipated…

astro-ph.CO2011★ 92 cited

Methanol as a tracer of fundamental constants

S. A. Levshakov, M. G. Kozlov, D. Reimers

The methanol molecule CH3OH has a complex microwave spectrum with a large number of very strong lines. This spectrum includes purely rotational transitions as well as transitions w…

astro-ph.SR2009★ 174 cited

High-resolution UVES/VLT spectra of white dwarfs observed for the ESO SN Ia Progenitor Survey. III. DA white dwarfs

D. Koester, B. Voss, R. Napiwotzki +5

The ESO Supernova Ia Progenitor Survey (SPY) took high-resolution spectra of more than 1000 white dwarfs and pre-white dwarfs. About two thirds of the stars observed are hydrogen-d…

astro-ph2008★ 34 cited

Variability of the proton-to-electron mass ratio on cosmological scales

Martin Wendt, Dieter Reimers

So far the only seemingly significant indication of a cosmological variation exists for the proton-to-electron mass ratio as stated by Reinhold et al. (2006). The measured indicati…

astro-ph2007★ 241 cited

HE 0557-4840 - Ultra-Metal-Poor and Carbon-Rich

John E. Norris, N. Christlieb, A. J. Korn +5

We report the discovery and high-resolution, high S/N, spectroscopic analysis of the ultra-metal-poor red giant HE 0557-4840, which is the third most heavy-element deficient star c…