Hot subluminous stars of spectral type B and O are core helium-burning stars at the blue end
of the horizontal branch or have evolved even beyond that stage. Most hot subdwarf stars …

Magnetic fields can play an important role in stellar evolution. Among white dwarfs, the most
common stellar remnant, the fraction of magnetic systems is more than 20 per cent. The …

Hot subdwarf stars of spectral types O and B represent a poorly understood phase in the
evolution of low-mass stars, in particular of close compact binaries. A variety of phenomena …

Hydrogen-deficient stars include the cool R CrB variable (RCBs) and hydrogen-deficient
carbon (HdCs) giants through extreme helium stars (EHes) to the very hot helium-rich …

The intermediate helium subdwarf B star LS IV-14° 116 is a unique object showing
extremely peculiar atmospheric abundances as well as long-period pulsations that cannot …

Context. Mass-loss rate is one of the most important stellar parameters. Mass loss via stellar
winds may influence stellar evolution and modifies stellar spectrum. Stellar winds of …

We present the discovery of long-period, low-amplitude, g-mode pulsations in the
intermediate He-rich hot subdwarf (sdOB) star Feige 46. So far, only one other He-enriched …

The intermediate He-enriched hot subdwarf star Feige 46 was recently reported as the
second member of the V366 Aqr (or He-sdOBV) pulsating class. Feige 46 is very similar to …

LSIV-14 116 is a very unusual subdwarf B star. It pulsates non-radially with high-order g-
modes, these pulsations are unexpected and unexplained, as the effective temperature is 6 …

A new group of low-mass chemically peculiar stars with helium-rich surfaces also seem to
have layers of cloud rich in zirconium, strontium, yttrium and even lead. Simon Jeffery and …