Investigation of Martian methane by using ultra-high resolution spectroscopy onboard dedicated telescope at Mt.Haleakala, Hawaii

• Project/Area Number: 25800271
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Space and upper atmospheric physics
• Research Institution: Tohoku University
• Principal Investigator: Nakagawa Hiromu 東北大学, 理学(系)研究科(研究院), 助教 (30463772)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000); Fiscal Year 2015: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000); Fiscal Year 2013: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
• Keywords: 火星大気 / メタン / 赤外分光 / 地上観測 / ヘテロダイン / 高分解能 / 火星 / 赤外 / 分光 / 赤外ヘテロダイン分光 / ハワイ / 連続観測

Outline of Final Research Achievements

A new Mid-Infrared Laser Heterodyne Instrument (MILAHI) with ultra-high resolution was developed for detection of Martian methane by using dedicated ground-based telescope for planetary science at Mt.Haleakala, Hawaii. The instrument has been successfully installed onboard Tohoku-60cm telescop at the top of Mt.Haleakala, and obtained CO2 non-LTE emission spectra of Mars and Venus. Obtained data and model predictions by radiative transfer code gave the scientific capabilities and measurement sensitivities of the MILAHI. This result has been accepted in Planetary Space Science (in printing). CO2 isotopes observation has been performed by using another IR heterodyne instrument, HIPWAC onboard IRTF NASA telescope, in order to understand the atmosphere-surface interactions. The Mars measurement by using SOFIA stratospheric telescope was also performed to detect Martian methane. The international support campaigns for orbiter missions, such as MAVEN and TGO have been prepared.

Research Products

• [Int'l Joint Research] University of Hawaii/NASA(米国)
• [Int'l Joint Research] Istituto Nazaionale di AstroFisica(イタリア)
• [Int'l Joint Research] University of Cologne(ドイツ)
• [Journal Article] IR heterodyne spectrometer MILAHI for continuous monitoring observatory of Martian and Venusian atmospheres at Mt.Haleakala, Hawaii (2016)
  • Author(s): H. Nakagawa, S. Aoki, H. Sagawa, Y. Kasaba, I. Murata, G. Sonnabend, S. Okano, J. Kuhn, J. Ritter, M. Kagitani, T. Sakanoi, M. Taguchi, K. Takami
  • Journal Title: Planetary Space Science Volume: 印刷中 Pages: 34-48
  • DOI: 10.1016/j.pss.2016.04.002
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [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, V. Formisano
  • Journal Title: Icarus Volume: 245 Pages: 177-183
  • Peer Reviewed / Open Access
• [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: 1-13
  • DOI: 10.1117/12.2055877
  • Peer Reviewed / Open Access
• [Presentation] Regional coupling between lower and upper atmosphere revealed by MAVEN/IUVS and complementary study by Earth-based observation (2016)
  • Author(s): H. Nakagawa, S. Aoki, H. Sagawa, Y. Kasaba, I. Murata, K. Takami, G. Sonnabend, M. Sornig, J. Kuhn, J. Ritter, S. Okano, M. Kagitani, T. Sakanoi, M. Taguchi
  • Organizer: International GEMSIS Workshop
  • Place of Presentation: 名古屋大学（名古屋）
  • Year and Date: 2016-03-24
  • Int'l Joint Research / Invited
• [Presentation] 赤外ヘテロダイン分光器MILAHIを用いた火星・金星大気観測 (2015)
  • Author(s): 中川広務、青木翔平、佐川英夫、笠羽康正、村田功、高見康介、岡野章一、鍵谷将人、坂野井健、田口真
  • Organizer: 第138回地球電磁気・地球惑星圏学会
  • Place of Presentation: 東京大学（東京）
  • Year and Date: 2015-11-02
• [Presentation] Scientific capabilities and measurement sensitivities of the IR heterodyne spectroscopy (2015)
  • Author(s): H. Nakagawa, H. Sagawa, S. Aoki, K. Takami, Y. Kaasba, I. Murata
  • Organizer: Symposium on Planetary Science 2015
  • Place of Presentation: 東北大学大学院理学研究科（宮城県仙台市）
  • Year and Date: 2015-02-17
• [Presentation] 東北大学ハレアカラ60cm望遠鏡ファーストライトおよび1.8PLANETS望遠鏡計画:超高分解能赤外ヘテロダイン分光による惑星観測 (2014)
  • Author(s): 中川広務, 青木翔平, 笠羽康正, 村田功, G. Sonnabend, 佐川英夫, 岡野章一, 鍵谷将人, 坂野井健, J. Kuhn, J. Ritter
  • Organizer: 地球型惑星圏研究会
  • Place of Presentation: 立教大学（東京都豊島区）
  • Year and Date: 2014-12-26
• [Presentation] 超高波長分解能レーザヘテロダイン分光器の惑星への挑戦 (2014)
  • Author(s): 中川広務, 青木翔平, 笠羽康正, 村田功, G. Sonnabend, 佐川英夫, 岡野章一, 鍵谷将人, 坂野井健, J. Kuhn, J. Ritter, 伊藤一成
  • Organizer: 地球電磁気・地球惑星圏学会
  • Place of Presentation: キッセイ文化ホール（長野県松本市）
  • Year and Date: 2014-11-02
• [Presentation] 超高分解能レーザー分光器による惑星大気の連続観測 (2014)
  • Author(s): 中川広務, 青木翔平, 笠羽康正, 村田功, G. Sonnabend, 佐川英夫, 岡野章一, 鍵谷将人, 坂野井健, J. Kuhn, J. Ritter, 伊藤一成
  • Organizer: 惑星科学会
  • Place of Presentation: 東北大学さくらホール（宮城県仙台市）
  • Year and Date: 2014-09-24
• [Presentation] Observing plan for continuous monitoring of planetary atmosphere using IR heterodyne instrument 2014 (2014)
  • Author(s): H. Nakagawa, Y. Kasaba, S. Aoki, I. Murata, S. Okano, and G. Sonnabend
  • Organizer: Symposium on Planetary Science 2014
  • Place of Presentation: 東北大学青葉記念会館、仙台
• [Presentation] Study of planetary atmosphere by continuous monitoring using Mid-Infrared Laser Heterodyne Instrument (MILAHI) (2013)
  • Author(s): H. Nakagawa, S. Aoki, Y. Kasaba, I. Murata, S. Okano, and G. Sonnabend
  • Organizer: European Planetary Science Congress 2014
  • Place of Presentation: ロンドン、イギリス
• [Presentation] ハワイ・ハレアカラにおける超高分解能赤外ヘテロダイン分光器 (2013)
  • Author(s): 中川広務, 青木翔平, 笠羽康正, 村田功, 市川隆, 岡野章一, G. Sonnabend
  • Organizer: 日本天文学会
  • Place of Presentation: 東北大学、仙台