170 citations · 2.9k across the 117 of their papers we have counts for
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PEPSI deep spectra. III. A chemical analysis of the ancient planet-host star Kepler-444
C. E. Mack, K. G. Strassmeier, I. Ilyin +3
We obtained an LBT/PEPSI spectrum with very high resolution and high signal-to-noise ratio (S/N) of the K0V host Kepler-444, which is known to host 5 sub-Earth size rocky planets.…
PEPSI deep spectra. II. Gaia benchmark stars and other M-K standards
K. G. Strassmeier, I. Ilyin, M. Weber
We provide a homogeneous library of high-resolution, high-S/N spectra for 48 bright AFGKM stars, some of them approaching the quality of solar-flux spectra. Our sample includes the…
PEPSI deep spectra. I. The Sun-as-a-star
K. G. Strassmeier, I. Ilyin, M. Steffen
As part of the first Potsdam Echelle Polarimetric and Spectroscopic Instrument (PEPSI) key-science project, we aim to provide well-exposed (viz. deep) high-resolution spectra of re…
A combined HST and XMM-Newton campaign for the magnetic O9.7 V star HD 54879: towards constraining the weak-wind problem of massive stars
T. Shenar, L. M. Oskinova, S. P. Järvinen +7
Context: HD 54879 (O9.7 V) is one of a dozen O-stars for which an organized atmospheric magnetic field has been detected. To gain insights into the interplay between atmospheres, w…
Magnetic field geometry and chemical abundance distribution of the He-strong star CPD -57 3509
S. Hubrig, N. Przybilla, H. Korhonen +9
The magnetic field of CPD -57 3509 was recently detected in the framework of the BOB (B fields in OB stars) collaboration. We acquired low-resolution spectropolarimetric observatio…
An astrometric and spectroscopic study of the Scuti variable HD21190 and its wide companion CPD -83 64B
E. Niemczura, R. -D. Scholz, S. Hubrig +4
Although pulsations of Scuti type are not expected among Ap stars from a theoretical point of view, previous observations of the known Scuti star HD21190 indicated a spectr…