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PUSHing Core-Collapse Supernovae to Explosions in Spherical Symmetry: Nucleosynthesis Yields

机译:将核心 - 坍缩超新星推向球对称爆炸:核合成产率

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摘要

Core-collapse supernovae (CCSNe) are the extremely energetic deaths of massive stars. They play a vital role in the synthesis and dissemination of many heavy elements in the universe. In the past, CCSN nucleosynthesis calculations have relied on artificial explosion methods that do not adequately capture the physics of the innermost layers of the star. The PUSH method, calibrated against SN1987A, utilizes the energy of heavy-flavor neutrinos emitted by the proto-neutron star (PNS) to trigger parametrized explosions. This makes it possible to follow the consistent evolution of the PNS and to ensure a more accurate treatment of the electron fraction of the ejecta. Here, we present the Iron group nucleosynthesis results for core-collapse supernovae, exploded with PUSH, for two different progenitor series. Comparisons of the calculated yields to observational metal-poor star data are also presented. Nucleosynthesis yields will be calculated for all elements and over a wide range of progenitor masses. These yields can be immensely useful for models of galactic chemical evolution.
机译:核塌陷超新星(CCSNe)是巨大恒星的极具活力的死亡。它们在宇宙中许多重元素的合成和传播中起着至关重要的作用。过去,CCSN核合成的计算依靠的是人工爆炸方法,无法充分捕捉恒星最内层的物理现象。根据SN1987A进行校准的PUSH方法利用了原中子星(PNS)发出的重味中微子的能量来触发参数化爆炸。这使得可以跟随PNS的持续发展,并确保更精确地处理喷射器的电子部分。在这里,我们介绍了两个不同的祖先系列的核心塌陷超新星(与PUSH一起爆炸)的铁基核合成结果。还介绍了计算的产量与观测的贫金属恒星数据的比较。将计算所有元素和广泛范围的祖细胞核合成产量。这些产量对于银河系化学演化的模型非常有用。

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