CAJ | 학술논문

用详细的双星演化模型计算了一个白矮星＋主序星的双星演化，在演化计算中，假设从双星系统损失的物质在双星系统周围形成星周盘进而考察了星周盘对双星演化的影响．星周盘能够通过潮汐力矩从系统中有效提取角动量从而增加双星间的物质转移速率，这使得一些系统能够作为Ⅰa型超新星爆炸．不过星周盘对Ⅰa型超新星诞生率的影响是非常有限的．
용상세적쌍성연화모형계산료일개백왜성＋주서성적쌍성연화，재연화계산중，가설종쌍성계통손실적물질재쌍성계통주위형성성주반진이고찰료성주반대쌍성연화적영향．성주반능구통과조석력구종계통중유효제취각동량종이증가쌍성간적물질전이속솔，저사득일사계통능구작위Ⅰa형초신성폭작．불과성주반대Ⅰa형초신성탄생솔적영향시비상유한적．
We have calculated the evolution of close binaries consisting of a white dwarf and a main - sequence or subgiant companion. In the evolution, we assume that a small fraction of the lost material from the system forms a circumbinary （CB） disk, which extracts the orbital angular momentum from the system through tidal torques. Our calculations indicate that the existence of a eircumbinary disk can enhance the material transfer rate, and then, the white dwarf may grow in mass efficiently to trigger Type Ia supernovae （SNe Ⅰa）. However, the effect of CB disk on the birth rate of SNe Ⅰa is insignificant.