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 …

In light of substantial new discoveries of hot subdwarfs by ongoing spectroscopic surveys
and the availability of the Gaia mission Early Data Release 3 (EDR3), we compiled new …

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 …

The project Massive Unseen Companions to Hot Faint Underluminous Stars from SDSS
(MUCHFUSS) aims to find sdBs with compact companions such as massive white dwarfs …

UVO 0825+ 15 is a hot bright helium-rich subdwarf which lies in K2 Field 5 and in a sample
of intermediate helium-rich subdwarfs observed with Subaru/HDS. The K2 light curve shows …

The discovery of extremely zirconium-and lead-rich surfaces amongst a small subgroup of
hot subdwarfs has provoked questions pertaining to chemical peculiarity in hot star …

Helium-rich hot subdwarf stars of spectral type O (He-sdO) are considered prime candidates
for stellar merger remnants. Such events should lead to the generation of strong magnetic …

Aims. The long-period sdOB+ G1V type spectroscopic binary SB 744 reveals strong lines of
fluorine and lead in the optical spectrum of the sdOB star and subsolar metallicity in the G1V …

We present the results of a search for binary hot subdwarf stars in photometric data from the
Transiting Exoplanet Survey Satellite (TESS). The sample of objects used in this work was a …

Abstract Using archival Hubble Space Telescope observations, we report the discovery of
four variable low-mass white dwarfs (WDs; 0.18 M⊙≤ M≤ 0.5 M⊙) in the globular cluster …