44 citations · 117 across the 9 of their papers we have counts for
9 papers
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…
Photometric variability of the LAMOST sample of magnetic chemically peculiar stars as seen by TESS
J. Labadie-Bartz, S. Hümmerich, K. Bernhard +2
High-quality light curves from space missions have opened up a new window on the rotational and pulsational properties of magnetic chemically peculiar (mCP) stars and have fuelled…
High-velocity CP2 stars in the Galactic halo
Nikola Faltová, Michal Prišegen, Klaus Bernhard +2
Context. The second subclass of chemically peculiar stars, the CP2 stars, are early-type stars exhibiting anomalous abundances with variable line strengths possibly also accompanie…
An overview of the properties of a sample of newly-identified magnetic chemically peculiar stars in the Kepler field
Zdeněk Mikulášek, Ernst Paunzen, Stefan Hümmerich +4
We present a comprehensive overview of the properties of a sample of 41 magnetic chemically peculiar stars that have been recently identified in the Kepler field by our team (Hümme…
The Kepler view of magnetic chemically peculiar stars
Stefan Hümmerich, Zdenek Mikulášek, Ernst Paunzen +6
Magnetic chemically peculiar (mCP) stars exhibit complex atmospheres that allow the investigation of such diverse phenomena as atomic diffusion, magnetic fields, and stellar rotati…
An investigation of the photometric variability of confirmed and candidate Galactic Be stars using ASAS-3 data
Klaus Bernhard, Sebastián Otero, Stefan Hümmerich +3
We present an investigation of a large sample of confirmed (N=233) and candidate (N=54) Galactic classical Be stars (mean V magnitude range of 6.4 to 12.6 mag), with the main aim o…
A Spectroscopic and Photometric Investigation of the Mercury-Manganese Star KIC 6128830
Stefan Hümmerich, Ewa Niemczura, Przemysław Walczak +4
The advent of space-based photometry provides the opportunity for the first precise characterizations of variability in Mercury-Manganese (HgMn/CP3) stars, which might advance our…
An Investigation of Four Chemically Peculiar Stars with Photometric Periods below 12 Hours
Stefan Hümmerich, Klaus Bernhard, Ernst Paunzen +3
We present an investigation of three chemically peculiar (CP) stars and one CP star candidate which exhibit photometric periods below 12 hours. New spectroscopic observations have…
New Photometric Observations and the 2015 Eclipse of the Symbiotic Nova Candidate ASAS J174600-2321.3
Franz-Josef Hambsch, Stefan Hümmerich, Klaus Bernhard +1
The eclipsing binary system ASAS J174600-2321.3, which has shown a conspicuous brightening of ~4 magnitudes (V) in the past, was recently identified as a symbiotic nova candidate.…