This is a challenge to the theory.We proposed a binary model for the formation of sdBs and our model is referred to as a major contribution in the field.

• 以前人们认为B型亚矮星来自于单星演化，而最新的观测结果表明三分之二的B型亚矮星为双星，这是对恒星演化理论的挑战。