| Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2016: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2015: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2014: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Outline of Final Research Achievements |
The purpose of this project is to examine theoretically the properties of a unique type of oscillation eigenmodes of rotating stars, the rosette modes, which have recently been discovered in the numerical simulation. There are two main results: (1) clarification of the physical process of the mode formation, and (2) demonstration of the observability of the modes in real stars. As for (1), it has turned out that the interaction caused by the Coriolis force among the multiple eigenmodes, which have close frequencies in the absence of rotation, induces the unique structure of the modes. Concerning (2), we have shown that the modes can be excited in some B-type main-sequence stars by performing the numerical calculations based on evolutionary stellar models.
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