| Abstract |
We investigate the variation of the chemical composition and size distribution of interstellar dust in the Milky Way. Assuming that the size distribution of dust follows power-law, we probe its upper cut-off radius and power-law slope that can satisfy the ranges of interstellar extinction. We find that, even if a variety of combinations of grain species are considered, the grain size distribution can be described with the upper cut-off radius of 0.2-0.3 um and the power-law slope of -3 to -4. |
