Long period binary on behalf of evolution of massive stars
| Project/Area Number |
23540280
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Astronomy
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| Research Institution | Japan Aerospace Exploration Agency |
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Principal Investigator |
MAEDA Yoshitomo 独立行政法人宇宙航空研究開発機構, 宇宙科学研究所, 助教 (80342624)
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| Project Period (FY) |
2011 – 2013
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2013: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2012: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2011: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
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| Keywords | 大質量星 / X線天文学 |
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| Research Abstract |
We have been observing massive-star binaries with a long orbital period of about 1 year or longer. Because high sensitivity is necessary for elemental line and absorption such as CNO, we used the grating spectrometer of the "XMM-Newton" satellite. We used the Suzaku satellites to get a broad band spectrum to find a mass-loss rate of the stellar winds.
We found that observation results could not explain in the simple model of standard colliding winds. The estimate of the mass-releasing rate using the absorption columns are useful.
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Report
(4 results)
Research Products
(21 results)
