| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2013: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2012: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2011: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Outline of Final Research Achievements |
Galaxies are not closed entities as depicted by the term ``Island Universe''. The matter associated with the galaxy is distributed extending far beyond its gravitational radius. This is illuminated by dark matter and dust: those associated with galaxies are less than their global values. In the present work we studied the distribution of cosmic dust, for which observational information can passively be obtained. We showed that while 1/3 of dust roduced in star forming activity in galaxies remains in the galactic disc, 2/3 are expelled from galaxies: its half is captured in Mg II clouds. The rest 1/3 is expelled to intergalactic space. We detected dust in damped Lyman alpha absorbers, while the total amount is smaller than in Mg II clouds. Heavy elements in the clouds are inferred to be produced in star forming activities in galaxies, carried away and deposited in those clouds.
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