| Budget Amount *help |
¥18,720,000 (Direct Cost: ¥14,400,000、Indirect Cost: ¥4,320,000)
Fiscal Year 2016: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2015: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2014: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2013: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
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| Outline of Final Research Achievements |
We have studied formation of the first stars in the universe by combining cosmological simulations and radiation hydrodynamics for star formation. We have found that the first stars are typically massive in the range of a few tens to a few hundreds of the Sun. In exceptionally intense ultraviolet radiation fields, even supermassive stars with mass more than hundred thousand times the Sun can be formed.
We have also studied the physical conditions in low-metallicity interstellar media by way of three-dimensional hydrodynamics. We have found that multi-phase media is realized in gases with relatively high-metallicity and strong ultraviolet irradiation. In such environment, turbulence can be maintained for long time and so the star formation would be less efficient.
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