AI 中文总结
该研究利用JWST/MIRI观测11颗IIP型核心坍缩超新星，分析其尘埃演化，发现尘埃质量与峰值光度等无显著相关，其产额不足以解释高红移星系尘埃，但支持CCSNe作为种子尘埃源的作用。
AI 中文摘要
核心坍缩超新星（CCSNe）被认为是早期宇宙中主要的尘埃产生源，但其形成的尘埃量、增长的时间尺度以及调节产额的物理条件仍不确定。我们对11颗爆炸后约1至7年的邻近IIP型核心坍缩超新星开展了详细的JWST/MIRI中红外（MIR）成像普查，研究其演化不同阶段的尘埃发射。光谱能量分布呈现出连贯的演化：在约400天时出现温度约1500K、5-8μm的热发射，在更晚的时期（约600-2500天）出现明显的10μm和18μm发射特征。冷尘埃温度范围约为120至250K，尘埃质量范围约为10⁻⁴至10⁻² M☉。当前样本中，测得的尘埃质量与峰值光度、平台持续时间或爆炸能量之间无统计显著相关性。具有早期高电离特征（表明存在受限星周介质CSM）的超新星，通常是样本中尘埃含量丰富的天体之一。测得的1-7年尘埃产额不足以解释典型红移z>6星系中的尘埃，但支持CCSNe作为后续 grain 增长的种子尘埃产生源的作用。
英文摘要
Core collapse supernovae (CCSNe) are invoked as major dust producers in the early Universe, yet the amount of dust they form, the timescale over which it grows, and the physical conditions that regulate the yield remain uncertain. We present a detailed JWST/MIRI mid-infrared (MIR) imaging census of 11 nearby Type IIP CCSNe spanning $\sim$1-7 yr after explosion, investigating dust emission across the different phases of their evolution. The spectral energy distributions show a coherent evolution from hot ($\sim$1500 K), 5-8 $μ$m emission at $\sim$400 d to prominent 10 and 18 $μ$m emission features at later epochs ($\sim$600-2500 d). The cool dust temperatures range from $\sim120$ to $250$ K and dust masses from $\sim10^{-4}$ to $10^{-2} M_{\odot}$. The current sample shows no statistically significant correlation between measured dust mass and peak luminosity, plateau duration, or explosion energy. SNe with early high ionization features, indicative of confined CSM, are often among the dust-rich objects in the sample. The measured 1-7 yr dust yields are insufficient to account for dust in typical $z > 6$ galaxies, but support a role for CCSNe as producers of seed dust for subsequent grain growth.
CommentsSubmitted to ApJ. Comments are welcome
