Using nebular spectra to reveal the progenitor and explosion mechanism of core-collpase supernovae

前驱物质质量与爆炸动能之间的关系是揭示剥离包层(SE)核坍塌(CC)超新星(SNE)爆炸机制的关键。在这项工作中，我们提出了一种利用SESNe的星云光谱来推导这一关系的方法，该方法基于测量前体质量的[Oi]/[CaII]和测量抛射物膨胀速度的[Oi]宽度之间的关联。利用流体动力学模拟，我们触发了不同动能和前体质量的爆炸。将模型与观测值进行了比较。我们找到了解释观测到的质量-速度关联所需的质量-能量标度关系。我们进一步证明了富氦和贫氦的近地天体遵循相同的质量-能量标度关系。

The relation between the progenitor mass and the kinetic energy of the explosion is a key toward revealing the explosion mechanism of stripped-envelope (SE) core-collapse (CC) supernovae (SNe). In this work, we present a method to derive this relation using the nebular spectra of SESNe, based on the correlation between [O I]/[Ca II], which measures the progenitor mass, and [O I] width, which measures the expansion velocity of the ejecta. Using hydrodynamic simulations, we trigger explosions with different kinetic energy and progenitor mass. The models are compared with observation. We find the mass-energy scaling relation required to explain the observed mass-velocity correlation. We further demonstrate helium-rich and helium-deficient SNe follow the same mass-energy scaling relation.