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| Paper: |
Evolution of Grain Size Distribution in Starburst
Galaxies |
| Volume: |
477, Galaxy Mergers in an Evolving Universe |
| Page: |
279 |
| Authors: |
Hirashita, H. |
| Abstract: |
We present our recent theoretical results on the evolution
of grain size distribution in starburst galaxies at high
redshift. We take into account the dust production and
ejection from supernovae and the
subsequent processing of the dust in the interstellar
medium. We find that shattering (disruption by
grain–grain collision) driven by interstellar
turbulence modifies the grain size
distribution on a timescale of several Myr.
We also calculate extinction curves,
finding that the
extinction curve observed in a z = 6.2 quasar can be
reproduced if the dust supplied from
supernovae is processed by shattering in interstellar
turbulence. |
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