Bibcode
Martínez-González, S.; Wünsch, Richard; Palouš, Jan; Muñoz-Tuñón, C.; Silich, Sergiy; Tenorio-Tagle, Guillermo
Bibliographical reference
The Astrophysical Journal, Volume 866, Issue 1, article id. 40, 13 pp. (2018).
Advertised on:
10
2018
Journal
Citations
12
Refereed citations
10
Description
Following the current debate on the fate of SN-condensed dust grains,
here we explore by means of three-dimensional hydrodynamical simulations
the interaction of dusty supernova remnants (SNRs) with the shocked
winds of neighboring massive stars within young massive stellar clusters
(SSCs). As a comparison, we have also explored the evolution of SNRs 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. Our
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. Our analysis considers the multiple dust processing resulting
from the passage of the SN reverse shock, including its reflection at
the SNR’s center, the injection of shocked stellar winds within
the respective remnant’s volume and the effect of secondary
forward shocks produced in sequential SN explosions. With our code
CINDER, on-the-fly, we have calculated the rates of thermal sputtering
and dust-induced radiative cooling from an initial distribution of grain
sizes and dust content. Fast-moving elongated dusty SN ejecta resemble
mushroom clouds violently ascending in a stratified atmosphere after
volcanic super-eruptions, where the pyroclasts carried by the clouds are
wind-driven and eventually accumulate into the vast surroundings.
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Casiana
Muñoz Tuñón