Can I read Numerical Simulations of Supernova Dust Destruction. II. Metal-Enriched Ejecta Knots on EtoBox?

Numerical Simulations of Supernova Dust Destruction. II. Metal-Enriched Ejecta Knots by Silvia, D. W.; Smith, B. D.; Shull, J. M. is a scholarly article available to read on EtoBox.

What is Numerical Simulations of Supernova Dust Destruction. II. Metal-Enriched Ejecta Knots about?

Following our previous work, we investigate through hydrodynamic simulations the destruction of newly-formed dust grains by sputtering in the reverse shocks of supernova remnants. Using an idealized setup of a planar shock impacting a dense, spherical clump, we implant a population of Lagrangian particles into the clump to represent a distribution of dust grains in size and composition. We vary the relative velocity between the reverse shock and ejecta clump to explore the effects of shock-heating and cloud compression. Because supernova ejecta will be metal-enriched, we consider gas metallicities from Z/Zsun = 1 to 100 and their influence on cooling properties of the cloud and the thermal sputtering rates of embedded dust grains. We post-process the simulation output to calculate grain sputtering for a variety of species and size distributions. In the metallicity regime considered in this paper, the balance between increased radiative cooling and increased grain erosion depends on the impact velocity of the reverse shock. For slow shocks (velocity less than or equal to 3000 km/s), the amount of dust destruction is comparable across metallicities, or in some cases is decreased with

Author

Silvia, D. W.; Smith, B. D.; Shull, J. M.

Published

2011

Language

EN