Abstract Details
| Name: Vasudha Choudhary Affiliation: Indian Institute of Astrophysics Conference ID: ASI2025_507 Title : A comparative study of SN2023ixf from early to late nebular phases. Authors and Co-Authors : Vasudha 1, Firoza K Sutaria 2, Alak Ray 3 Abstract Type : Poster Abstract Category : Stars, Interstellar Medium, and Astrochemistry in Milky Way Abstract : We present a spectroscopic study of type II supernova SN 2023ixf, tracing its evolution into the very late nebular stages. Initial theoretical models and immediate post-explosion spectra proposed that the progenitor star underwent substantial mass loss before the supernova explosion; however, subsequent analyses categorized SN 2023ixf as a typical Type II supernova, prompting further investigation into its characteristics. Besides the evolving profiles of the Balmer lines, indicating the initial influence of CSM, our observations reveal other significant spectral features, including the emergence of multiple metal lines in the very late nebular spectrum, whose profiles reveal the progenitor interior and dynamics of the explosion. By comparing SN 2023ixf with the well-documented Type II supernovae SN 2017eaw and SN 2017gmr, we aim to investigate how variations in progenitor environments and mass loss affect spectral properties throughout different evolutionary stages. The possibility of late-time shock-CSM interaction is investigated. Our findings aim to bridge gaps in the current literature regarding the long-term behavior of Type II supernovae. |