Development of the control system for petal-shaped segmented mirrors

• Project/Area Number: 25287037
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Astronomy
• Research Institution: Kyoto University
• Principal Investigator: Fumihide Iwamuro 京都大学, 理学(系)研究科(研究院), 准教授 (80281088)
• Co-Investigator(Renkei-kenkyūsha): NAGATA TETSUYA 京都大学, 大学院理学研究科, 教授 (80208016) ; KURITA MIKIO 京都大学, 大学院理学研究科, 准教授 (20419427) ; MATSUO TARO 京都大学, 大学院理学研究科, 特定准教授 (00548464) ; YOSHIDA MICHITOSHI 広島大学, 大学院理学研究科, 教授 (90270446)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥15,210,000 (Direct Cost: ¥11,700,000、Indirect Cost: ¥3,510,000); Fiscal Year 2015: ¥5,720,000 (Direct Cost: ¥4,400,000、Indirect Cost: ¥1,320,000); Fiscal Year 2014: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000); Fiscal Year 2013: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
• Keywords: 光赤外線天文学 / 望遠鏡 / 分割鏡 / 干渉計 / 光学赤外線天文学

Outline of Final Research Achievements

The self-phase-measurement system between segments using three lasers (two fixed wavelength and one tunable) with the measurement accuracy of 15nm at 24 different points has been developed. The 24 half-mirror units for the segmented primary mirror of Kyoto 3.8m telescope were assembled and their stability under different elevation angles was confirmed. The effect of the temperature change on the stability of the holder was also examined and confirmed to be small if we use a certain epoxy adhesive. In addition to this system, the controllability of the segments was improved by changing the location of the edge-sensors attached to the back of the segments, the effective environmental barrier coating of the primary mirror was investigated, and the optical designs of two new spectrographs has been completed based on the new concepts and technologies.

Research Products

• [Journal Article] Properties of the Interstellar Medium in Star-Forming Galaxies at z~1.4 Revealed with ALMA (2016)
  • Author(s): Seko, A., Ohta, K., Yabe, K., Hatsukade, B., Akiyama, M., Iwamuro, F., Tamura, N., and Dalton, G.
  • Journal Title: The Astrophysical Journal Volume: 819 Issue: 1 Pages: 82-82
  • DOI: 10.3847/0004-637x/819/1/82
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] The Subaru FMOS Galaxy Redshift Survey (FastSound). I. Overview of the Survey Targeting on Halpha Emitters at z ~ 1.4 Survey (2015)
  • Author(s): Motonari TONEGAWA et al.
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 67 Issue: 5 Pages: 81-81
  • DOI: 10.1093/pasj/psv044
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] The Subaru-XMM-Newton Deep Survey (SXDS). VIII. Multi-wavelength identification, optical/NIR spectroscopic properties, and photometric redshifts of X-ray sources (2015)
  • Author(s): Akiyama, M., Ueda, Y. et al.
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 67 Issue: 5
  • DOI: 10.1093/pasj/psv050
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] The Subaru FMOS Galaxy Redshift Survey (FastSound). III. The mass-metallicity relation and the fundamental metallicity relation at z ~ 1.4 (2015)
  • Author(s): Yabe, Kiyoto; Ohta, Kouji; Akiyama, Masayuki; Bunker, Andrew; Dalton, Gavin; Ellis, Richard; Glazebrook, Karl; Goto, Tomotsugu; Imanishi, Masatoshi; Iwamuro, Fumihide; Okada, Hiroyuki; Shimizu, Ikkoh; Takato, Naruhisa; Tamura, Naoyuki; Tonegawa, Motonari; Totani, Tomonori
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 67 Issue: 6 Pages: 10216-10216
  • DOI: 10.1093/pasj/psv079
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] The Gas Inflow and Outflow Rate in Star-forming Galaxies at z ~ 1.4 (2015)
  • Author(s): Yabe, Kiyoto; Ohta, Kouji; Akiyama, Masayuki; Iwamuro, Fumihide; Tamura, Naoyuki; Yuma, Suraphong; Dalton, Gavin; Lewis, Ian
  • Journal Title: Astrophys. J. Volume: 798 Issue: 1 Pages: 45-45
  • DOI: 10.1088/0004-637x/798/1/45
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] The mass-metallicity relation at z ~ 1.4 revealed with Subaru/FMOS (2014)
  • Author(s): Yabe, Kiyoto,...Takato, N.,...他17名
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: Volume 437, Issue 4 Issue: 4 Pages: 3647-3663
  • DOI: 10.1093/mnras/stt2185
  • Peer Reviewed
• [Journal Article] A study of selection methods for Halpha-emitting galaxies at z ~ 1.3 for the Subaru/FMOS galaxy redshift survey for cosmology (FastSound) (2014)
  • Author(s): Tonegawa, M. et al.
  • Journal Title: PASJ Volume: 66 Issue: 2
  • DOI: 10.1093/pasj/psu022
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] High-contrast planet imager for Kyoto 4m segmented telescope (2014)
  • Author(s): Matsuo, Taro, Murakami, Naoshi, Kotani, Takayuki, Kawahara, Hajime, Natsume, Noriaki, Kino, Masaru, Yamamoto, Kodai, Imada, Hiroaki, Kurita, Mikio, Iribe, Masatsugu, and 13 coauthors
  • Journal Title: Proceedings of the SPIE Volume: 9147 Pages: 91471V-91471V
  • DOI: 10.1117/12.2055751
• [Journal Article] FIELD: Automated emission line detection software for Subaru/FMOS near-infrared spectroscopy (2014)
  • Author(s): Tonegawa, M. et al.
  • Journal Title: PASJ Volume: 66 Issue: 3 Pages: 31-31
  • DOI: 10.1093/pasj/psu127
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] A Study of Selection Methods for H alpha Emitting Galaxies at z~1.3 for the Subaru/FMOS Galaxy Redshift Survey for Cosmology (FastSound) (2014)
  • Author(s): M.Tonegawa, T.Totani, M.Akiyama, G.Dalton, K.Glazebrook, F.Iwamuro, 他６名
  • Journal Title: 日本天文学会 欧文研究報告 (PASJ) Volume: 66
  • Peer Reviewed
• [Presentation] 京大岡山3.8m望遠鏡計画：位相カメラの技術開発
  • Author(s): 上野忠美、横山洋海、岩室史英
  • Organizer: 日本天文学会2014年春季年会
  • Place of Presentation: 国際基督教大学
• [Remarks] 京大岡山 3.8m 新技術望遠鏡
  • URL: http://www.kusastro.kyoto-u.ac.jp/~iwamuro/Kyoto3m/index.html
• [Remarks] 近赤外相対測光分光器
  • URL: http://www.kusastro.kyoto-u.ac.jp/~iwamuro/NIS/index.html
• [Remarks] 可視広帯域高分散分光器
  • URL: http://www.kusastro.kyoto-u.ac.jp/~iwamuro/HDS/index.html
• [Remarks] 可視相対高分散分光器
  • URL: http://www.kusastro.kyoto-u.ac.jp/~iwamuro/HDS/index.html
• [Remarks] 京大岡山 3.8m 新技術望遠鏡
  • URL: http://www.kusastro.kyoto-u.ac.jp/~iwamuro/Kyoto3m/index.html