321 citations · 2.3k across the 100 of their papers we have counts for
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Abundance of radioactive technetium in Przybylski's star revisited
S. M. Andrievsky, S. A. Korotin, K. Werner
We have searched for lines of the radioactive element technetium (Tc) in the spectrum of Przybylski's star (HD101065). The nuclei of this chemical element are formed in the slow pr…
The bright blue side of the night sky: Spectroscopic survey of bright and hot (pre-) white dwarfs
Nicole Reindl, Ramazan Islami, Klaus Werner +10
We report on the spectroscopic confirmation of 68 new bright ( mag) and blue (pre-)white dwarfs (WDs). This finding has allowed us to almost double the number of the h…
Spectroscopic survey of faint planetary-nebula nuclei. II. The subdwarf O central star of Fr 2-30
Howard E. Bond, Klaus Werner, Gregory R. Zeimann +1
Fr 2-30 = PN? G126.8-15.5 is a faint emission nebula, hosting a 14th-mag central star that we identify here for the first time. Deep Halpha and [O III] images reveal a roughly elli…