论文标题
中微子主导的积聚流：核心偏离超新星的第二个核合成工厂和星系中铁市场的调节
Neutrino-dominated accretion flows: second nucleosynthesis factory in core-collapse supernovae and regulation of iron markets in galaxies
论文作者
论文摘要
宇宙金属被广泛认为是由超新星（SNE）和紧凑的物体合并产生的。 Here, we discuss the nucleosynthesis of neutrino-dominated accretion flows (NDAFs) with outflows in the core-collapse SNe (CCSNe), and show that the outflows from NDAFs can have a significant contribution to the $^{56}$Ni abundance in the faint explosions if the masses of the progenitor stars are within about $25-50$ $M_\odot$.与NDAF流出的核合成通道中的大量相比，较少的祖先星可以产生更多的$^{56} $ ni。因此，我们发现总计（即CCSNE和NDAF流出）$^{56} $ ni质量每个CCSN仅弱取决于祖细胞星的质量。在金属性的演化中，$^{56} $ fe的比率（$^{56} $ ni）与初始总气体质量的衰减可能会增加$ \ sim $ \ sim $ 1.95 $ 1.95倍，如果考虑到NDAF的核合成产量的上限，则可以考虑到NDAF的上限和CCSNE。我们的结果可能对太阳能邻域，星系和活性银河核的化学演化具有重要意义。
Cosmic metals are widely believed to be produced by supernovae (SNe) and compact object mergers. Here, we discuss the nucleosynthesis of neutrino-dominated accretion flows (NDAFs) with outflows in the core-collapse SNe (CCSNe), and show that the outflows from NDAFs can have a significant contribution to the $^{56}$Ni abundance in the faint explosions if the masses of the progenitor stars are within about $25-50$ $M_\odot$. Less massive progenitor stars can produce more $^{56}$Ni than their more massive counterparts in the NDAF outflow nucleosynthesis channel. Therefore, we find that the total (i.e., CCSNe and NDAF outflows) $^{56}$Ni mass per CCSN depends only weakly upon the mass of progenitor stars. In the metallicity evolution, the ratio of $^{56}$Fe (decayed by $^{56}$Ni) mass to the initial total gas mass can increase by $\sim$ 1.95 times if the upper limits of the nucleosynthesis yields from NDAF outflows and CCSNe are considered. Our results might have significant implication for chemical evolution of the the solar neighborhood, galaxies, and active galactic nuclei.
