2012 Fiscal Year Final Research Report
High Dispersion Infrared Spectroscopy for Detecting Extrasolar Terrestrial Planets
| Project/Area Number |
21244022
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Astronomy
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| Research Institution | National Astronomical Observatory of Japan (2012)
The University of Tokyo (2009-2011) |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
TERADA Hiroshi 国立天文台, ハワイ観測所, 助教 (00425406)
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| Project Period (FY) |
2009 – 2012
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| Keywords | 天文学 / 光学赤外線天文学 / 波面補償光学 / 系外惑星 / ドップラー法 / 惑星系形成 / 高分散分光 / 回折格子 |
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| Research Abstract |
We developed an "ammonia gas cell" as a high quality wavelength calibrator and installed it into the Infrared Camera and Spectrograph of Subaru Telescope. With this device, we started a high resolution infrared spectroscopic search for "Earth like" extrasolar planets with <10 earth masses. We achieved a velocity precision of 23. 6 m/s, which is the highest among the world spectrographs with a spectral resolution (λ・△λ) of around 20, 000. In addition, we successfully fabricated a new dispersion optics with an Si immersion grating for future very high-resolution infrared spectroscopy.
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