Type: Poster
Session: Posters (Wednesday & Thursday)
Author: Xiaolong Li

Abstract: Light echoes (LE) are reflections of stellar explosions on interstellar dust. LE reaches Earth with a time delay, which can be centuries, providing us with a unique opportunity to study historical transients, such as supernovae (SNe). By comparing the spectra obtained from LE with known SNe spectra, it is possible to classify the type of source responsible for generating these LEs. We built an LE spectra library using spectra and photometry data from the Open Supernova Catalog and developed an algorithm to identify the types of sources of LEs. We applied this method to study the spectra of three LEs discovered in the Large Magellanic Cloud (LMC).