387 citations · 1.8k across the 46 of their papers we have counts for
46 papers
WISE J005128.08+645651.7: An enigmatic R Coronae Borealis star
J. Budaj, K. Bernhard, I. Hubeny
Context. R Coronae Borealis (RCB) stars are hydrogen-deficient and carbon-rich (HdC) supergiants that likely originate from a merger of two white dwarfs. As such they are not expec…
The twin red giant branch system BD+20 5391 A case study of low-mass double-core evolution
M. Kurpas, M. Dorsch, S. Geier +12
Understanding interactions of binary systems on the red giant branch is crucial to understanding the formation of compact stellar remnants such as helium-core white dwarfs (He-WDs)…
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…
Science with a small two-band UV-photometry mission II: Observations of stars and stellar systems
J. Krtička, J. Benáček, J. Budaj +32
We outline the impact of a small two-band UV-photometry satellite mission on the field of stellar physics, magnetospheres of stars, binaries, stellar clusters, interstellar matter,…
WD 1145+017: Alternative models of the atmosphere, dust clouds, and gas rings
Jan Budaj, Andrii Maliuk, Ivan Hubeny
WD 1145+017 is the first white dwarf known to be orbited by disintegrating exoasteroids. It is a DBZ-type white dwarf with strongly variable broad circumstellar lines and variable…
HD 183986: a high-contrast SB2 system with a pulsating component
Martin Vaňko, Theodor Pribulla, Pavol Gajdoš +7
There is a small group of peculiar early-type stars on the main sequence that show different rotation velocities from different spectral lines. This inconsistency might be due to t…