Pre-maximum spectra of type Ia SNe

The presence of unburned material in the ejecta of normal Type Ia supernovae (SNe Ia) is investigated using early-time spectroscopy obtained by the Carnegie Supernova Project....本研究借助卡内基超新星项目（Carnegie Supernova Project）获取的早期光谱观测数据，针对正常Ia型超新星（SNe Ia）抛射物中未燃烧物质的存在性展开了探究。