| Project/Area Number |
15540234
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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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 | Kyoto University |
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Principal Investigator |
SUGAI Hajime Kyoto University, Graduate School of Science, Assistant Prof., 大学院・理学研究科, 助手 (50291422)
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| Project Period (FY) |
2003 – 2005
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| Project Status |
Completed (Fiscal Year 2005)
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| Budget Amount *help |
¥3,600,000 (Direct Cost: ¥3,600,000)
Fiscal Year 2005: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 2004: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 2003: ¥2,800,000 (Direct Cost: ¥2,800,000)
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| Keywords | integral field spectroscopy / optical instrument / multi-pupil spectroscopy / spatial sampling / Subaru telescope / LINER / supermassive black hole / galactic wind |
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| Research Abstract |
Our group succeeded in the first-light observations of our multimode spectrograph, the Kyoto tridimensional spectrograph II (3DII), on the Subaru Telescope at Mauna Kea. The present research program has aimed at providing a new method on LINER studies with the integral field spectrograph (IFS) mode of the 3DII. LINERs show activity similar to but milder than classical active galactic nuclei, which are energized by supermassive black holes.. Since the emission line regions in LINER galaxies are small and faint, their spatial distributions have been investigated only in few exceptionally extended ones. The 3DII IFS mode enables us to obtain the kinematics of the gas and the spatial variations of emission line flux ratios and to understand the energy sources for the gas kinematics/ionization. I have added an option of a coarser spatial sampling and a wider field of view so that we can choose an adequate spatial sampling depending on the observing conditions.
Through open use observing time at Subaru, I have carried out observations of LINERs. NGC 1052 is an example : its galactic wind associated with a supermassive black hole has been observed with high spatial resolution. The high quality IFS data have enabled us to find the interaction between the wind and the surrounding gas and also to understand the inner structure of the wind. This is important for understanding the origin of galactic winds from suppermassive black holes. I am summarizing results on other LINERs as well in order for statistical discussion. I have presented my new results as well as the instrument's excellent quality in publication as well as in oral presentations in international conferences. In the IFS conference at Durham in UK, I have been assigned for a scientific organizing committee member.
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