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| Paper: |
EvolutioN of Grains in the MAgellanic Clouds (ENiGMA) |
| Volume: |
497, Why Galaxies Care about AGB Stars III: A Closer Look in Space and Time |
| Page: |
363 |
| Authors: |
Tchernyshyov, K.; Meixner, M.; Dwek, E.; Temim, T.; Boyer, M. |
| Abstract: |
Many of the stages in the life cycle of dust are poorly understood.
Historically, this has been due to a dearth of data and a corresponding
lack of well-motivated theory.
The Magellanic Clouds, which have been observationally studied in depth
and over a wide wavelength range, are optimal locations to test
and expand our theoretical knowledge of dust microphysics.
Towards this end, we present a preliminary model for the evolution of
metal and dust abundances in the Small Magellanic Cloud.
This preliminary model includes dust production by stellar sources,
dust destruction by supernova shocks, and dust and metal removal by
galactic winds.
We can approximately reproduce the observed metal abundances and the
galaxy-wide dust production rate from Asymptotic Giant Branch (AGB)
stars, but we underpredict the total dust mass by an order of
magnitude. We discuss the possible effects of some of our assumptions
on the predicted dust mass. |
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