4 papers
On the origin of sinusoidal brightness variations in F to O-type stars through radial velocities
E. Å ipková, M. Skarka, M. VaÅko +3
Stellar variability may originate from various phenomena such as binarity, pulsations, or rotation. These mechanisms can induce flux variations of similar magnitudes, shapes, and p…
50 Dra: Am-type twins with additional variability in a non-eclipsing system
M. Skarka, J. Lipták, E. Niemczura +5
The interplay between radiative diffusion, rotation, convection, and magnetism in metallic-line chemically peculiar stars is still not fully understood. Recently, evidence has emer…
HD 34736: An intensely magnetised double-lined spectroscopic binary with rapidly-rotating chemically peculiar B-type components
E. Semenko, O. Kochukhov, Z. Mikulášek +21
We report the results of a comprehensive study of the spectroscopic binary (SB2) system HD 34736 hosting two chemically peculiar (CP) late B-type stars. Using new and archival obse…
Apsidal motion and TESS light curves of three southern close eccentric eclipsing binaries: GM Nor, V397 Pup, and PT Vel
M. Wolf, P. Zasche, J. Kára +10
New ground-based and space-based photometric data have been obtained and archival spectroscopic measurements were used in this study of three detached early-type and southern-hemis…