论文标题
偏心放牧的信封对IIB型超新星祖细胞的演变
Eccentric grazing envelope evolution towards type IIb supernova progenitors
论文作者
论文摘要
我们模拟了IIB型超新星（SNE IIB）形成的放牧包膜演化（GEE）通道的怪异二进制系统的演化，并发现JETS额外的质量去除会增加该通道中SNE IIB形成的参数空间。为了探索偏心率的作用和喷气机的额外批量去除，我们使用了恒星进化代码梅萨二元。初始初级和次要质量为M1i = 15MO，M2i = 2.5MO。我们检查了600-1000RO的初始半高轴，E = 0-0.9的偏心率。 Roche Lobe Overflow（RLOF）和JET的质量均匀，然后是风，在M（H，F）= 0.05MO的爆炸恒星中留下氢质量，与SN IIB祖细胞兼容。当初始轨道不是圆形时，最终轨道可能具有很高的偏心率。在许多情况下，由于有或没有喷气机的额外质量去除，系统可以进入一个共同的信封演化（CEE）阶段，然后从中脱离。对于一些怪异的范围，喷气机在防止CEE方面更有效。尽管存在很大的不确定性，但喷气机的额外批量除去大大增加了系统从CEE中脱颖而出的可能性。这加强了圆形轨道的早期结论。在某些情况下，仅RLOF而没有喷气机批量去除，就会形成SN IIB祖细胞。我们估计，GEE通道中喷气机的额外质量去除会增加祖细胞的数量相对于单独的RLOF的数量增加了约两个。
We simulate the evolution of eccentric binary systems in the frame of the grazing envelope evolution (GEE) channel for the formation of Type IIb supernovae (SNe IIb), and find that extra mass removal by jets increases the parameter space for the formation of SNe IIb in this channel. To explore the role of eccentricity and the extra mass removal by jets we use the stellar evolutionary code MESA binary. The initial primary and secondary masses are M1i=15Mo and M2i=2.5Mo. We examine initial semi-major axes of 600-1000Ro, and eccentricities of e=0-0.9. Both Roche lobe overflow (RLOF) and mass removal by jets, followed by a wind, leave a hydrogen mass in the exploding star of M(H,f)=0.05Mo, compatible with a SN IIb progenitor. When the initial orbit is not circular the final orbit might have a very high eccentricity. In many cases, with and without the extra mass removal by jets, the system can enter a common envelope evolution (CEE) phase, and then gets out from it. For some ranges of eccentricities the jets are more efficient in preventing the CEE. Despite the large uncertainties, extra mass removal by jets substantially increases the likelihood of the system to get out from a CEE. This strengthens earlier conclusions for circular orbits. In some cases RLOF alone, without mass removal by jets, can form SN IIb progenitors. We estimate that the extra mass removal by jets in the GEE channel increases the number of progenitors relative to that by RLOF alone by about a factor of two.
