| Name: Firoza Sutaria |
| Affiliation: Indian Institute of Astrophysics. |
| Conference ID: ASI2026_674 |
| Title: The CSM morphology of massive stars from multiband observations of interacting supernovae. |
| Abstract Type: Poster |
| Abstract Category: Stars, Interstellar Medium, and Astrochemistry in Milky Way |
| Author(s) and Co-Author(s) with Affiliation: Firoza Sutaria(Indian Institute of Astrophysics, Bangalore 560034, India), V. Sethulakshmi(Instituto de Estudios Astrofısicos, Universidad Diego Portales Avenida Ejercito Libertador 441, Santiago, Chile), Vasudha Choudhary(Indian Institute of Astrophysics, Bangalore-560034, India.), Dipang Vaishnav(Indian Institute of Astrophysics, Bangalore-560034) |
| Abstract: Stellar mass loss is as a yet a poorly quantified phenomenon, especially for massive stars which may have experienced episodic mass loss. Observationally, circumstellar material (CSM) has been detected around massive ($> 8.3 M_{\odot}$) stars via direct observations, and its presence inferred from the optical spectra of core-collapse supernovae (CC-SNe). In this work, the spectra of several CC-SNe across various classes (type-IIP/L, type-IIb, type-Ib/c) is studied, in order to model the morphology (distribution and density) of the CSM, as a function of progenitor properties (ZAMS mass, metallicity and possible binary interaction), and its post main sequence evolutionary path. It is found that in addition to a CSM with a bi-polar geometry, a multi-shelled CSM cannot be ruled out for very massive progenitors. |
