Stars are extremely important astronomical objects that constitute the pillars on which the
Universe is built, and as such, their study has gained increasing interest over the years …

We review the formation and evolution of compact binary stars consisting of white dwarfs
(WDs), neutron stars (NSs), and black holes (BHs). Mergings of compact-star binaries are …

Context. The Gaia DR3 catalogue contains, for the first time, about 800 000 solutions with
either orbital elements or trend parameters for astrometric, spectroscopic, and eclipsing …

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 …

We report the discovery of 6576 new spectroscopically confirmed white dwarf and subdwarf
stars in the Sloan Digital Sky Survey Data Release 12. We obtain T eff, log g and mass for …

We analyse two binary systems containing giant stars, V723 Mon ('the Unicorn') and
2M04123153+ 6738486 ('the Giraffe'). Both giants orbit more massive but less luminous …

A large number of extremely low-mass helium white dwarfs (ELM WDs) have been
discovered in recent years. The majority of them are found in close binary systems …

When main-sequence stars expand into red giants, they are expected to engulf close-in
planets,,,–. Until now, the absence of planets with short orbital periods around post …

We present a catalog containing 839 candidate post–common envelope systems. Common
envelope evolution is very important in stellar astrophysics, particularly in the context of very …

White dwarfs carry information on the structure and evolution of the Galaxy, especially
through their luminosity function and initial-to-final mass relation. Very cool white dwarfs …