Abstract

Invited Talk - Splinter DustEvol

Friday, 13 September 2024, 14:00   (S12)

The Aftermath of Giant Stellar Eruptions and Supernovae: Late-Time Impact of Radiative SN Shocks on Circumstellar and Interstellar Dust

Sergio Martínez-González, Diana B. Serrano-Hernández, Santiago Jiménez, Sergiy Silich, Richard Wünsch
Instituto Nacional de Astrofisica, Optica y Electronica. Czech Academy of Sciences

Using 3-D hydrodynamical simulations with the AMR code FLASH, we investigated dust grain survival following giant stellar eruptions and subsequent supernova explosions. By modeling the evolution of the progenitor's stellar wind, an erupted shell-like circumstellar medium (CSM), and the expansion of the supernova remnant (SNR), we explored how various CSM geometries and eruption-SN delays affect the efficiency of dust destruction. In scenarios with shorter, dozen-year eruption-SN delays, particularly in bipolar CSMs, dust survival is higher due to substantial radiative cooling that conserves most of the erupted dust mass. Conversely, longer, hundreds-of-years eruption-SN delays lead to varying outcomes: spherical CSMs retain a small fraction of the dust, while bipolar CSMs experience almost complete dust destruction. Additionally, as the (weakened) SN forward shocks become radiative in all cases, their impact on surrounding interstellar dust grains is expected to be significantly reduced.