CoBiToM Project โ II. Evolution of contact binary systems close to the orbital period cut-off
CoBiToM Project โ II. Evolution of contact binary systems close to the orbital period cut-off
ABSTRACT Ultra-short orbital period contact binaries (Porb < 0.26 d) host some of the smallest and least massive stars. These systems are faint and rare, and it is believed that they have reached a contact configuration after several Gyrs of evolution via angular momentum loss, mass transfer, and mass loss โฆ