75 citations · 581 across the 40 of their papers we have counts for
36 papers · 1 filter
PM 1-322: new variable planetary nebula
E. Paunzen, K. Bernhard, J. Budaj +4
Spectra of planetary nebulae (PNe) are characterised by strong forbidden emission lines and often also by an infrared (IR) excess. A few PNe show dust obscuration events and/or har…
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…
Searching for shell stars in LAMOST DR4 by probing the Fe 42 multiplet lines
S. Huemmerich, E. Paunzen, K. Bernhard
Shell stars, in particular the cooler ones, often do not show conspicuous Balmer-line emission and may consequently be missed in surveys that specifically search for emission signa…
HD 60431, the CP2 star with the shortest rotational period -- Physical parameters and period analysis
Z. Mikulasek, E. Semenko, E. Paunzen +5
CP2 stars show periodic photometric, spectroscopic, and magnetic variations with the rotational period. They are generally slow rotators, with rotational periods exceeding half a d…
Two Candidate KH 15D-like Systems from the Zwicky Transient Facility
Wei Zhu, Klaus Bernhard, Fei Dai +8
KH 15D contains a circumbinary disk that is tilted relative to the orbital plane of the central binary. The precession of the disk and the orbital motion of the binary together pro…
A case study of ACV variables discovered in the Zwicky Transient Facility survey
N. Faltová, K. Kallová, M. Prišegen +6
Magnetic chemically peculiar (mCP) stars exhibit complex atmospheres that allow the investigation of the interplay of atomic diffusion, magnetic fields, and stellar rotation. A non…