5 papers
A new sample of super-slowly rotating Ap (ssrAp) stars from the Zwicky Transient Facility survey
S. Hümmerich, K. Bernhard, E. Paunzen
The magnetic chemically peculiar Ap stars exhibit an extreme spread of rotational velocities, the reason of which is not well understood. Ap stars with rotational periods of 50 day…
An all-sky catalogue of stellar reddening values
E. Paunzen, M. Netopil, M. Prisegen +1
When observing astronomical objects, we must deal with extinction (i.e. the absorption and scattering of the emitted radiation by dust and gas between the source and the observer).…
New ACV variables discovered in the Zwicky Transient Facility survey
B. Bauer-Fasching, K. Bernhard, E. Brändli +8
The manifestation of surface spots on magnetic chemically peculiar (mCP) stars is most commonly explained by the atomic diffusion theory, which requires a calm stellar atmosphere a…
Apparent non-variable stars from the Kepler mission
E. Paunzen, F. Binder, A. Cyniburk +12
The analysis of non-variable stars is generally neglected in the literature. However, such objects are needed for many calibration processes and for testing pulsational models. The…
Chemically peculiar stars on the pre-main sequence
L. KueÃ, E. Paunzen, N. Faltová +12
Context. The chemically peculiar (CP) stars of the upper main sequence are defined by spectral peculiarities that indicate unusual elemental abundance patterns in the presence of d…