ハワイ・ハレアカラ観測拠点における太陽系惑星の可視・赤外高分散分光研究

2014 Fiscal Year Annual Research Report

• Project/Area Number: 24403007
• Research Institution: Tohoku University
• Principal Investigator: 笠羽 康正 東北大学, 理学(系)研究科(研究院), 教授 (10295529)
• Co-Investigator(Kenkyū-buntansha): 坂野井 健 東北大学, 理学(系)研究科(研究院), 准教授 (80271857) ; 村田 功 東北大学, 環境科学研究科, 准教授 (00291245) ; 中川 広務 東北大学, 理学(系)研究科(研究院), 助教 (30463772) ; 鍵谷 将人 東北大学, 理学(系)研究科(研究院), 助教 (30436076)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 水星大気 / 木星大気・オーロラ / 火星大気 / 金星大気 / ハレアカラ40cm望遠鏡運用 / ハレアカラ60cm望遠鏡移設 / ハレアカラ2m望遠鏡建設 / アメリカ・ハワイ

Outline of Annual Research Achievements

(1) 水星ナトリウム大気の大規模構造・速度場観測：2015年春の運用終了が迫る米水星探査機MESSENGERとの同時観測を、東北大ハレアカラ観測所で実現させた。その広視野・高波長分解能観測能力を活かした大規模密度・速度分布観測を世界で最も長時間にわたり追跡し、MESSENGERで観測される磁気圏活動との相関がない、という予想外の事実を見出した。
(2) 木星のイオトーラス活動と磁気圏活動の関連究明：ハレアカラ40cm望遠鏡でイオトーラス活動を長期追跡し、Hisaki/EXCEEDの木星観測キャンペーンに同期する唯一の中性・プラズマトーラス密度情報を提供し続けた。2015年1月にはイオ火山活動に伴うイオトーラス大増光現象を世界に先駆けて捉えた。2015年1月・3月には、Hisaki/EXCEEDのUVオーロラ長期追尾と同期する赤外線オーロラ空間分布観測をSUBARU-8m・IRTF-3m で遂行した。
(3) 金星・火星大気の宇宙流出検出、(4) 金星上層大気の微量成分探索、(5) 火星大気の地殻起源物質探索：極端紫外線観測衛星Hisaki/EXCEEDによる金星・火星観測の実施を主導した。2014年9月にはハレアカラ山頂に東北大・飯館観測所60cmを移設し、これに中間赤外線ヘテロダイン分光器を試験装着し、火星による初期試験観測を実施するとともに、2015年3月には金星CO2吸収線による高層大気速度場観測に耐えうる良好なスペクトルの取得までこぎつけた。
(6) ハレアカラ山頂2m望遠鏡新設の準備研究: 米田の長期現地派遣およびメンバーの出張により、a. 東北大が担当する2m望遠鏡の主鏡研磨作業、b. ハワイ大が担当する望遠鏡施設・建屋の設計作業を支え、2016年末予定のファーストライト実現に向けて自歩を固めた。
(7) 成果公表：研究期間における各種成果（ハレアカラ、マウナケア、Hisaki/Exceedなど）を論文にまとめて公表した。

Research Progress Status

26年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

26年度が最終年度であるため、記入しない。

Causes of Carryover

26年度が最終年度であるため、記入しない。

Expenditure Plan for Carryover Budget

26年度が最終年度であるため、記入しない。

Research Products

• [Journal Article] Search for hydrogen peroxide in the Martian atmosphere by the Planetary Fourier Spectrometer onboard Mars Express, (2015)
  • Author(s): Aoki, S., M. Giuranna, Y. Kasaba, H. Nakagawa, G. Sindoni, A. Geminale, and V. Formisano
  • Journal Title: Icarus Volume: 245 Pages: 177-183
  • DOI: 10.1016/j.icarus.2014.09.034
  • Peer Reviewed
• [Journal Article] Venus' clouds as inferred from the phase curves acquired by IR1 and IR2 on board Akatsuki (2015)
  • Author(s): Satoh, Takehiko; Ohtsuki, Shoko; Iwagami, Naomoto; Ueno, Munetaka; Uemizu, Kazunori; Suzuki, Makoto; Hashimoto, George L.; Sakanoi, Takeshi; Kasaba, Yasumasa; Nakamura, Ryosuke; Imamura, Takeshi; Nakamura, Masato; Fukuhara, Tetsuya; Yamazaki, Atsushi; Yamada, Manabu
  • Journal Title: Icarus Volume: 248 Pages: 213-220
  • DOI: 10.1016/j.icarus.2014.10.030
  • Peer Reviewed
• [Journal Article] Vertical emissivity profiles of Jupiter's northern H3+ and H2 infrared auroras observed by Subaru/IRCS (2014)
  • Author(s): Uno, T.; Kasaba, Y.; Tao, C.; Sakanoi, T.; Kagitani, M.; Fujisawa, S.; Kita, H.; Badman, S. V.
  • Journal Title: Journal of Geophysical Research: Space Physics Volume: 119 Pages: 10,219-10,241
  • DOI: 10.1002/2014JA020454
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Field-of-View Guiding Camera on the HISAKI (SPRINT-A) Satellite (2014)
  • Author(s): Yamazaki, A.; Tsuchiya, F.; Sakanoi, T.; Uemizu, K.; Yoshioka, K.; Murakami, G.; Kagitani, M.; Kasaba, Y.; Yoshikawa, I.; Terada, N.; Kimura, T.; Sakai, S.; Nakaya, K.; Fukuda, S.; Sawai, S.
  • Journal Title: Space Science Reviews Volume: 184 Pages: 259-274
  • DOI: 10.1007/s11214-014-0106-y
  • Peer Reviewed
• [Journal Article] Cloud top structure of Venus revealed by Subaru/COMICS mid-infrared images (2014)
  • Author(s): Sato, T. M.; Sagawa, H.; Kouyama, T.; Mitsuyama, K.; Satoh, T.; Ohtsuki, S.; Ueno, M.; Kasaba, Y.; Nakamura, M.; Imamura, T.
  • Journal Title: Icarus Volume: 243 Pages: 386-399
  • DOI: 10.1016/j.icarus.2014.09.004
  • Peer Reviewed
• [Journal Article] Evidence for global electron transportation into the jovian inner magnetosphere (2014)
  • Author(s): Yoshioka, K.; Murakami, G.; Yamazaki, A.; Tsuchiya, F.; Kimura, T.; Kagitani, M.; Sakanoi, T.; Uemizu, K.; Kasaba, Y.; Yoshikawa, I.; Fujimoto, M.
  • Journal Title: Science Volume: 6204 Pages: 1581-1584
  • DOI: 10.1126/science.1256259
  • Peer Reviewed
• [Journal Article] Development of infrared Echelle spectrograph and mid-infrared heterodyne spectrometer on a small telescope at Haleakala, Hawaii for planetary observation (2014)
  • Author(s): Sakanoi, Takeshi; Kasaba, Yasumasa; Kagitani, Masato; Nakagawa, Hiromu; Kuhn, Jeff; Okano, Shoichi
  • Journal Title: Proceedings of the SPIE Volume: 9147 Pages: 91478D-1, 13
  • DOI: 10.1117/12.2055877
  • Peer Reviewed
• [Journal Article] Mid-infrared observations of Io’s volcanism from the ground in 2011 and 2012 (2014)
  • Author(s): Yoneda, M.; Miyata, T.; Tsang, C. C. C.; Sako, S.; Kamizuka, T.; Nakamura, T.; Asano, T.; Uchiyama, M.; Okada, K.; Hayashi, Y.; Yoshii, Y.; Kagitani, M.; Sakanoi, T.; Kasaba, Y.; Okano, S.
  • Journal Title: Icarus Volume: 236 Pages: 153-156
  • DOI: 10.1016/j.icarus.2014.01.019
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Extreme Ultraviolet Radiation Measurement for Planetary Atmospheres/Magnetospheres from the Earth-Orbiting Spacecraft (Extreme Ultraviolet Spectroscope for Exospheric Dynamics: EXCEED) (2014)
  • Author(s): Yoshikawa, Ichiro; Yoshioka, Kazuo; Murakami, Go; Yamazaki, Atsushi; Tsuchiya, Fuminori; Kagitani, Masato; Sakanoi, Takeshi; Terada, Naoki; Kimura, Tomoki; Kuwabara, Masaki; Fujiwara, Kuto; Hamaguchi, Tomoya; Tadokoro, Hiroyasu
  • Journal Title: Space Science Reviews Volume: 184 Pages: 237-258
  • DOI: 10.1007/s11214-014-0077-z
  • Peer Reviewed
• [Presentation] EUV Oxygen Dayglow at Venus Observed by Hisaki (2015)
  • Author(s): Masunaga, K.; Seki, K.; Terada, N.; Tsuchiya, F.; Kimura, T.; Yoshioka, K.; Murakami, G.; Yamazaki, A.; Kagitani, M.; Tao, C.; Fedorov, A.; Futaana, Y.; Shiota, D.; Yoshikawa, I.
  • Organizer: 46th Lunar and Planetary Science Conference
  • Place of Presentation: Woodlands, Texas, USA
  • Year and Date: 2015-03-16
• [Presentation] Polarization measurement of exoplanetary atmospheres with T60/Dipole-2 at Haleaklsa, Hawaii (2015)
  • Author(s): 坂野井健, 鍵谷将人, 笠羽康正, A. Berdyugin, S. Berdyugina, 佐藤隆雄
  • Organizer: 系外惑星大研究会
  • Place of Presentation: 東京大、東京
  • Year and Date: 2015-03-02
• [Presentation] Commitment to European Mars Missions via Infrared Spectroscopic sciences (2015)
  • Author(s): Kasaba, Y., S. Aoki, H. Nakagawa, M. Giuranna and O. Korablev
  • Organizer: Symposium on Planetary Science 2015
  • Place of Presentation: 東北大、仙台
  • Year and Date: 2015-02-16
• [Presentation] Scientific capabilities and measurement sensitivities of the IR heterodyne spectroscopy (2015)
  • Author(s): Nakagawa, H., H. Sagawa, S. Aoki, K. Takami, Y. Kasaba, and I. Murata
  • Organizer: Symposium on Planetary Science 2015
  • Place of Presentation: 東北大、仙台
  • Year and Date: 2015-02-16
• [Presentation] Vertical and horizontal structures of Jovian IR aurora emission intensity by SUBARU / IRCS observation (2015)
  • Author(s): Fujisawa, S., Y. Kasaba, C. Tao, T. Sakanoi, H. Kita, and M. Kagitani
  • Organizer: Symposium on Planetary Science 2015
  • Place of Presentation: 東北大、仙台
  • Year and Date: 2015-02-16
• [Presentation] Optical and infrared measurements of planetary atmospheres with the T60 telescope and the future PLANETS mission at Haleakala, Hawaii (2015)
  • Author(s): Sakanoi, T., M. Kagitani, Y. Kasaba, T. Obara, S. Okano, and J. Kuhn
  • Organizer: Symposium on Planetary Science 2015
  • Place of Presentation: 東北大、仙台
  • Year and Date: 2015-02-16
  • Invited
• [Presentation] Variability of Jupiter’s Main Auroral Emission in Response to Magnetospheric Hot Plasma Injections (2014)
  • Author(s): S. Badman, M. Fujimoto, M. Kagitani, Y. Kasaba, S. Kasahara, T. Kimura, H. Melin, G. Murakami, J. Nichols, T. Sakanoi, A. Steffl, C. Tao, F. Tsuchiya, T. Uno, A. Yamazaki, M. Yoneda, I. Yoshikawa, K. Yoshioka
  • Organizer: American Geophysical Society 2014 Fall Meeting
  • Place of Presentation: Moscone Center, San Fransisco, USA.
  • Year and Date: 2014-12-15
• [Presentation] Local electron heating in the Io plasma torus associated with Io: the HISAKI observation (2014)
  • Author(s): F. Tsuchiya, K. Yoshioka, T. Kimura, G. Murakami, M. Kagitani, A. Yamazaki, Y. Kasaba, T. Sakanoi, I. Yoshikawa, H. Nozawa
  • Organizer: American Geophysical Society 2014 Fall Meeting
  • Place of Presentation: Moscone Center, San Fransisco, USA.
  • Year and Date: 2014-12-15
• [Presentation] Seasonal variation of HDO/H2O ratio in the atmosphere of Mars observed by SUBARU/IRCS and MEX/PFS (2014)
  • Author(s): Aoki, S., M. Giuranna, G. Sindoni, H. Nakagawa, H. Sagawa, A. Aronica, and Y. Kasaba
  • Organizer: European Planetary Science Congress 2014
  • Place of Presentation: Centro de Congressos do Estoril, Cascais, Portugal
  • Year and Date: 2014-09-07
• [Presentation] Mid-Infared Laser Heterodyne Instruement (MILaHI): for sensitive search of trace gases on Mars (2014)
  • Author(s): Aoki, S., H. Nakagawa, I. Murata, and Y. Kasaba
  • Organizer: European Planetary Science Congress 2014
  • Place of Presentation: Centro de Congressos do Estoril, Cascais, Portugal
  • Year and Date: 2014-09-07
• [Presentation] Cloud top structure of Venus revealed by Subaru/COMICS mid-infrared images (2014)
  • Author(s): Sato, T.M., H. Sagawa, T. Kouyama, K. Mitsuyama, T. Satoh, S. Ohtsuki, M. Ueno, Y. Kasaba, M. Nakamura, and T. Imamura
  • Organizer: European Planetary Science Congress 2014
  • Place of Presentation: Centro de Congressos do Estoril, Cascais, Portugal
  • Year and Date: 2014-09-07
• [Presentation] Io's volcanic enhancement observed in mid-infrared from the ground (2014)
  • Author(s): Yoneda, M., T. Miyata, C.C.C. Tang, S. Sako, T. Kamizuka, T. Nakamura, K. Asano, M. Uchiyama, K. Okada, Y. Yoshii, S. Sakanoi, Y. Kasaba, and S. Okano
  • Organizer: European Planetary Science Congress 2014
  • Place of Presentation: Centro de Congressos do Estoril, Cascais, Portugal
  • Year and Date: 2014-09-07
• [Presentation] Observing plan for planetary atmosphere using IR heterodyne spectroscopy in 2014 (2014)
  • Author(s): Nakagawa, H., S. Aoki, Y. Kasaba, I. Murata, and H. Sagawa
  • Organizer: Japan Geoscience Union Meeting 2014
  • Place of Presentation: パシフィコ横浜, 横浜
  • Year and Date: 2014-04-30
• [Presentation] Coordinated observation of Jupiter thermosphere and radiation belt in January 2014 (2014)
  • Author(s): Kita, H., H. Misawa, F. Tsuchiya, S. Fujisawa, T. Sakanoi, and Y. Kasaba
  • Organizer: Japan Geoscience Union Meeting 2014
  • Place of Presentation: パシフィコ横浜, 横浜
  • Year and Date: 2014-04-30