| Budget Amount *help |
¥15,470,000 (Direct Cost: ¥11,900,000、Indirect Cost: ¥3,570,000)
Fiscal Year 2018: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2017: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2016: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
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| Outline of Final Research Achievements |
We have performed theoretical studies to elucidate the formation process of high-mass star formation in low-metallicity environments, which should have occurred in the early universe. Mainly we have studied the protostellar radiative feedback effects against the gas accreting on high-mass protostars. Our results show that, even at the metallicity of 0.01% of the solar value, the photoionization is the dominant feedback, and the resulting evolution is similar to that of the primordial star formation. Although the primordial environments are not directly accessible even by upcoming observational facilities, such low-metallicity star-forming regions exist in the nearby universe. Therefore, we suggest that the high-ass star formation in the low-metallicity environments is an essential target for future observations to glimpse the star formation process in the early universe.
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