Abstract Type Ia supernovae (SNe Ia) play a key role in the fields of astrophysics and
cosmology. It is widely accepted that SNe Ia arise from thermonuclear explosions of white …

Stellar multiplicity is among the oldest and richest problems in astrophysics. Binary stars are
a cornerstone of stellar mass and radius measurements that underpin modern stellar …

We report a spectroscopic search for hypervelocity white dwarfs (WDs) that are runaways
from Type Ia supernovae (SNe Ia) and related thermonuclear explosions. Candidates are …

The dense environments in the cores of globular clusters (GCs) facilitate many strong
dynamical encounters among stellar objects. These encounters have been shown to be …

We consider a scenario in which Sgr A* is in a massive black hole binary (MBHB) with an as-
of-yet undetected supermassive or intermediate-mass black hole companion. Dynamical …

Hot subdwarfs (sdO/B) are the stripped helium cores of red giants formed via binary
interactions. Close hot subdwarf binaries with massive white dwarf companions have been …

We consider the finite velocity of the ejecta of a type Ia supernova (SN Ia) in the double
detonation (DDet) scenario with a white dwarf (WD) mass-donor companion, and find that …

This review highlights the role of the Gaia space mission in transforming white dwarf
research. These stellar remnants constitute 5%–7% of the local stellar population in volume …

Two decades on, the study of hypervelocity stars is still in its infancy. These stars can
provide novel constraints on the total mass of the Galaxy and its dark matter distribution …

Context. Hypervelocity stars (HVSs) unbound to the Galaxy can be formed with extreme
stellar interactions, for example close encounters with supermassive black holes or in …