Subdwarf B (sdB) stars are extreme horizontal branch stars with high temperature and gravity. The most promising formation scenarios involve close binary star evolution with three different channels, ..
Subdwarf B (sdB) stars are extreme horizontal branch stars with high temperature and gravity. The most promising formation scenarios involve close binary star evolution with three different channels, (a) Common Envelope (CE) channel , which can produce short period (P = 0.1 – 10 d) sdB + white dwarf (WD) or main sequence (MS) binary systems, (b) Roche lobe overflow (RLOF) channel, which results in long period (450
