MD simulations of 5-50 Å silicate grains find shattering thresholds of ~6 km/s for both SiO2 and astrodust compositions, twice the canonical 2.7 km/s value, with shattered size distributions inconsistent with prior power-law predictions.
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A transition to low-opacity SNe-produced dust at z>9 reproduces the observed low attenuation and UV luminosity function excess in early galaxies.
A 6-arcsecond resolution extinction map of M33 derived from RGB star color fitting shows dust up to 2.5 mag aligned with hydrogen, HI, and CO distributions.
citing papers explorer
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Silicate cosmic dust grain collisions in the interstellar medium: A molecular dynamics study
MD simulations of 5-50 Å silicate grains find shattering thresholds of ~6 km/s for both SiO2 and astrodust compositions, twice the canonical 2.7 km/s value, with shattered size distributions inconsistent with prior power-law predictions.
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Stardust Galaxies at z>9: A Dust-Origin Transition Behind the Excess of UV-Bright Galaxies
A transition to low-opacity SNe-produced dust at z>9 reproduces the observed low attenuation and UV luminosity function excess in early galaxies.
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Extinction Distributions in Nearby Star-resolved Galaxies. II. M33
A 6-arcsecond resolution extinction map of M33 derived from RGB star color fitting shows dust up to 2.5 mag aligned with hydrogen, HI, and CO distributions.