High-speed and wide-field survey for trans-Neptunian objects

• Project/Area Number: 26247074
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Solid earth and planetary physics
• Research Institution: National Astronomical Observatory of Japan
• Principal Investigator: Watanabe Junichi 国立天文台, 天文情報センター, 教授 (50201190)
• Co-Investigator(Kenkyū-buntansha): 臼井 文彦 神戸大学, 理学研究科, 特命助教 (30720669) ; 酒向 重行 東京大学, 大学院理学系研究科(理学部), 助教 (90533563)
• Co-Investigator(Renkei-kenkyūsha): MAEHARA Hiroyuki 京都大学, 理学研究科, 特定准教授 (40456851) ; MITO Hiroyuki 東京大学, 大学院理学系研究科, 研究員 (00396805) ; AOKI Tsutomu 東京大学, 大学院理学系研究科, 助手 (10251414) ; SOYANO Takao 東京大学, 大学院理学系研究科, 助手 (20251415)
• Project Period (FY): 2014-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥39,000,000 (Direct Cost: ¥30,000,000、Indirect Cost: ¥9,000,000); Fiscal Year 2017: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000); Fiscal Year 2016: ¥18,330,000 (Direct Cost: ¥14,100,000、Indirect Cost: ¥4,230,000); Fiscal Year 2015: ¥9,490,000 (Direct Cost: ¥7,300,000、Indirect Cost: ¥2,190,000); Fiscal Year 2014: ¥6,760,000 (Direct Cost: ¥5,200,000、Indirect Cost: ¥1,560,000)
• Keywords: 固体惑星 / 衛星 / 小惑星 / 惑星形成 / 惑星進化

Outline of Final Research Achievements

The goal of this study is to reveal outer environment in the early solar system and migration process of ice giant planets by observing occultations of kilo-meter-size trans-Neptunian objects (TNOs) and deriving their size-frequency distribution. We have developed a wide-field high-speed camera with a field-of-view of 5 deg2 equipped with highly sensitive CMOS sensors and conducted test observations with this camera on the 1-m Schmidt telescope at Kiso observatory, the University of Tokyo to detect the TNO occultations. We have also developed software and observation methods necessary for large surveys for the occultations by researching characteristics of data obtained with this camera in wide-field and high-speed observations in the ecliptic plane and the milky way regions.

Research Products

• [Journal Article] Significantly high polarization degree of the very low-albedo asteroid (152679) 1998 KU2 (2018)
  • Author(s): Kuroda Daisuke、Ishiguro Masateru、Watanabe Makoto、Hasegawa Sunao、Sekiguchi Tomohiko、Naito Hiroyuki、Usui Fumihiko、Imai Masataka、Sato Mitsuteru、Kuramoto Kiyoshi
  • Journal Title: Astronomy & Astrophysics Volume: 611 Pages: 31-31
  • DOI: 10.1051/0004-6361/201732086
  • Peer Reviewed
• [Journal Article] Optical and Near-infrared Polarimetry of Non-periodic Comet C/2013 US10 (Catalina) (2017)
  • Author(s): Kwon Yuna Grace , Ishiguro Masateru , Kuroda Daisuke , Hanayama Hidekazu , Kawabata Koji S. , Akitaya Hiroshi , Nakaoka Tatsuya , Itoh Ryosuke , Toda Hiroyuki , Yanagisawa Kenshi , et al.
  • Journal Title: The Astronomical Journal Volume: 154 Issue: 4 Pages: 173-173
  • DOI: 10.3847/1538-3881/aa89ef
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Organized Autotelescopes for Serendipitous Event Survey (OASES): Design and performance (2017)
  • Author(s): Arimatsu Ko、Tsumura Kohji、Ichikawa Kohei、Usui Fumihiko、Ootsubo Takafumi、Kotani Takayuki、Sarugaku Yuki、Wada Takehiko、Nagase Koichi、Watanabe Jun-ichi
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 69 Issue: 4 Pages: 68-68
  • DOI: 10.1093/pasj/psx048
  • Peer Reviewed / Open Access
• [Journal Article] Upward-moving low-light meteor. I: Observation results (2017)
  • Author(s): Kozak P. M.、Watanabe J.
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 467 Pages: 793-801
  • DOI: 10.1093/mnras/stx008
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Follow-up observations for the Asteroid Catalog using AKARI Spectroscopic Observations (2017)
  • Author(s): Hasegawa Sunao、Kuroda Daisuke、Yanagisawa Kenshi、Usui Fumihiko
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 69 Issue: 6 Pages: 99-99
  • DOI: 10.1093/pasj/psx117
  • Peer Reviewed
• [Journal Article] Data compression for the Tomo-e Gozen using low-rank matrix approximation (2017)
  • Author(s): Mikio Morii, Shiro Ikeda, Shigeyuki Sako, Ryo Ohsawa
  • Journal Title: The Astrophysical Journal Volume: 835 Issue: 1 Pages: 1-1
  • DOI: 10.3847/1538-4357/835/1/1
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Hayabusa-2 mission target asteroid 162173 Ryugu (1999 JU3): Searching for the object’s spin-axis orientation (2017)
  • Author(s): Muller T. G.、Durech J.、Ishiguro M.、Mueller M.、Kruhler T.、Yang H.、Kim M.-J.、O’Rourke L.、Usui F.、and 21 coauthors
  • Journal Title: Astronomy & Astrophysics Volume: 599 Pages: A103-A103
  • DOI: 10.1051/0004-6361/201629134
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Development of a prototype of the Tomo-e Gozen wide-field CMOS camera (2016)
  • Author(s): Sako, Shigeyuki; Shigeyama Toshikazu et al. (31番目/43人)
  • Journal Title: Proceedings of the SPIE Volume: 9908 Pages: 1-15
  • DOI: 10.1117/12.2231259
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Development of a real-time data processing system for a prototype of the Tomo-e Gozen wide field CMOS camera (2016)
  • Author(s): Ohsawa, Ryou; Shigeyama, Toshikazu et al. (31番目/43人)
  • Journal Title: Proceedings of the SPIE Volume: 9913 Pages: 991339-991339
  • DOI: 10.1117/12.2231615
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Photometric Measurements of H2O Ice Crystallinity on Trans-Neptunian Objects (2016)
  • Author(s): Terai, T.; Itoh, Y.; Oasa, Y.; Furusho, R.; Watanabe, J.
  • Journal Title: The Astrophysical Journal Volume: 827 Issue: 1 Pages: 65-74
  • DOI: 10.3847/0004-637x/827/1/65
  • Peer Reviewed
• [Presentation] 木曽超広視野高速CMOSカメラTomo-e Gozen Q0の性能評価 (2018)
  • Author(s): 小島悠人
  • Organizer: 日本天文学会春季年会
• [Presentation] 木曽超広視野高速 CMOS カメラ Tomo-e Gozen FM筐体の開発 (2017)
  • Author(s): 高橋英則
  • Organizer: 日本天文学会秋季年会
• [Presentation] 木曽超広視野高速CMOSカメラTomo-e Gozenの状態監視システムの開発 (2017)
  • Author(s): 小島悠人
  • Organizer: 日本天文学会秋季年会
• [Presentation] 木曽超広視野高速CMOSカメラTomo-e Gozen実機 の開発－ 要素試験と詳細設計 (2017)
  • Author(s): 酒向重行
  • Organizer: 日本天文学会春季年会
• [Presentation] 木曽超広視野高速 CMOS カメラ Tomo-e の開発 --- Tomo-e プロトタイプ機の開発および試験観測の報告 (2016)
  • Author(s): 大澤亮
  • Organizer: 日本天文学会春季年会
  • Place of Presentation: 首都大学東京（東京都八王子市）
  • Year and Date: 2016-03-14
• [Presentation] 木曽超広視野高速 CMOS カメラ Tomo-eプロトタイプ機の性能評価 (2016)
  • Author(s): 菊池勇輝
  • Organizer: 日本天文学会春季年会
  • Place of Presentation: 首都大学東京（東京都八王子市）
  • Year and Date: 2016-03-14
• [Presentation] 木曽超広視野高速CMOSカメラTomo-e Gozen実機の開発 － 基本設計 (2016)
  • Author(s): 酒向重行
  • Organizer: 日本天文学会秋季年会
• [Presentation] 木曽超広視野高速CMOSカメラTomo-eの開発 －基本設計の完了 (2015)
  • Author(s): 酒向重行
  • Organizer: 日本天文学会秋季年会
  • Place of Presentation: 甲南大学（兵庫県神戸市）
  • Year and Date: 2015-09-09
• [Presentation] 木曽超広視野高速 CMOS カメラ Tomo-e のバックエンドデータ転送システムの設計と評価 (2015)
  • Author(s): 大澤亮
  • Organizer: 日本天文学会秋季年会
  • Place of Presentation: 甲南大学（兵庫県神戸市）
  • Year and Date: 2015-09-09
• [Presentation] 木曽超広視野高速CMOSカメラTomo-eのイメージセンサ評価試験 (2015)
  • Author(s): 菊池勇輝
  • Organizer: 日本天文学会秋季年会
  • Place of Presentation: 甲南大学（兵庫県神戸市）
  • Year and Date: 2015-09-09
• [Presentation] 木曽超広視野高速CMOSカメラTomo-eによるTNO掩蔽現象の捜索 (2015)
  • Author(s): 有松亘
  • Organizer: 日本天文学会秋季年会
  • Place of Presentation: 甲南大学（兵庫県神戸市）
  • Year and Date: 2015-09-09
• [Presentation] 超広視野高速CMOSカメラTomo-eの観測戦略 (2015)
  • Author(s): 酒向 重行
  • Organizer: 日本天文学会春季年会
  • Place of Presentation: 大阪大学(大阪府)
  • Year and Date: 2015-03-18 – 2015-03-21
• [Presentation] 木曽観測所超広視野CMOSカメラの開発計画 (2014)
  • Author(s): 酒向 重行
  • Organizer: 日本天文学会秋季年会
  • Place of Presentation: 山形大学(山形県）
  • Year and Date: 2014-09-11 – 2014-09-13
• [Presentation] Faint-meteor survey with a large-format CMOS sensor (2014)
  • Author(s): 渡部 潤一
  • Organizer: ACM2014
  • Place of Presentation: フィンランド, ヘルシンキ
  • Year and Date: 2014-06-28 – 2014-07-03