Study on physics of supernovae

我们使用了超新星（SNe）的密集观测，再加上合作者提供的建模能力来研究这些事件的物理性质。我们观测的力量在于早期光谱数据的可用性，这些数据是在短时间间隔内获得的，并且覆盖了很宽的波长范围。这些丰富的信息使我们能够对不同类型的SNe进行研究。结果的一个亮点是检测到热核SNe爆炸留下的未燃烧物质，我们发现这比以前认为的要普遍得多。在核心塌陷SNe上，我们能够区分出一类特殊的贫氢SNe，它们表现出特别低的膨胀速度，这一特征对当前的爆炸模型来说是具有挑战性的。

We have used intensive observations of supernovae (SNe), coupled with modelling capabilities provided by collaborators to study the physical nature of these events. The power of our observations resided in the availability of early-time spectroscopic data, obtained at short intervals, and covering a wide wavelength range. This wealth of information allowed us perform studies on different types of SNe. One highlight of the results is the detection of material that is left unburned by the explosion of thermonuclear SNe, which we found to be much more common than previously thought. On core-collapse SNe, we were able to distinguish a special class of hydrogen-poor SNe that show peculiarly low expansion velocities, a feature that is challenging for current explosion models.