Mass loss out of close binaries

Understand

In a liberal evolutionary scenario, mass can escape from a binary during eras of fast mass transfer.

• We calculate the mass lost by binaries with a B-type primary at birth where mass transfer starts during hydrogen core burning of the donor.
• We simulate the distribution of mass-ratios and orbital periods for those interacting binaries.
• The amount of time the binary shows Algol characteristics within different values of mass-ratio and orbital period has been fixed from conservative and liberal evolutionary calculations.