Pyroclastic Blowout: Dust Survival in Isolated versus Clustered Supernovae

Dr. Sergio Martínez-González

Abstract

Following the current debate on the fate of SN-condensed dust grains, I will present a set of three-dimensional hydrodynamical simulations of the interaction of dusty supernova remnants (SNRs) with the shocked winds of neighboring massive stars within young massive stellar clusters (SSCs). As a comparison, I will discuss the evolution of supernova remnants in the diffuse ISM with constant density. Since the hydrodynamics of SNRs is intimately related to the properties of their immediate environment, the lifecycle of dust grains in SNRs within SSCs is radically different from that in the diffuse ISM. Moreover, off-centered SNRs evolving in the steep density gradient established due to a star cluster wind experience a blowout phase: shell fragmentation due to protruding Rayleigh-Taylor instabilities and the venting of SN ejecta. The main finding is that clustered SN explosions will cause a net increase in the amount of dust in the surroundings of young massive stellar clusters.

About the talk

Pyroclastic Blowout: Dust Survival in Isolated versus Clustered Supernovae
Dr. Sergio Martínez-González
Astronomical Institute, Czech Academy of Sciences.
Thursday September 27, 2018 - 10:30  (Aula)
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