Marine Paquet   Frederic Moynier   Tetsuya Yokoyama   Wei Dai   Yan Hu   Yoshinari Abe   Jérôme Aléon   Conel M. O’D. Alexander   Sachiko Amari   Yuri Amelin   Ken-ichi Bajo   Martin Bizzarro   Audrey Bouvier   Richard W. Carlson   Marc Chaussidon   Byeon-Gak Choi   Nicolas Dauphas   Andrew M. Davis   Tommaso Di Rocco   Wataru Fujiya   Ryota Fukai   Ikshu Gautam   Makiko K. Haba   Yuki Hibiya   Hiroshi Hidaka   Hisashi Homma   Peter Hoppe   Gary R. Huss   Kiyohiro Ichida   Tsuyoshi Iizuka   Trevor R. Ireland   Akira Ishikawa   Motoo Ito   Shoichi Itoh   Noriyuki Kawasaki   Noriko T. Kita   Kouki Kitajima   Thorsten Kleine   Shintaro Komatani   Alexander N. Krot   Ming-Chang Liu   Yuki Masuda   Kevin D. McKeegan   Mayu Morita   Kazuko Motomura   Izumi Nakai   Kazuhide Nagashima   David Nesvorný   Ann N. Nguyen   Larry Nittler   Morihiko Onose   Andreas Pack   Changkun Park   Laurette Piani   Liping Qin   Sara S. Russell   Naoya Sakamoto   Maria Schönbächler   Lauren Tafla   Haolan Tang   Kentaro Terada   Yasuko Terada   Tomohiro Usui   Sohei Wada   Meenakshi Wadhwa   Richard J. Walker   Katsuyuki Yamashita   Qing-Zhu Yin   Shigekazu Yoneda   Edward D. Young   Hiroharu Yui   Ai-Cheng Zhang   Tomoki Nakamura   Hiroshi Naraoka   Takaaki Noguchi   Ryuji Okazaki   Kanako Sakamoto   Hikaru Yabuta   Masanao Abe   Akiko Miyazaki   Aiko Nakato   Masahiro Nishimura   Tatsuaki Okada   Toru Yada   Kasumi Yogata   Satoru Nakazawa   Takanao Saiki   Satoshi Tanaka   Fuyuto Terui   Yuichi Tsuda   Sei-ichiro Watanabe   Makoto Yoshikawa   Shogo Tachibana   Hisayoshi Yurimoto   
Nature Astronomy 7(2) 182-189 2022年12月 [査読有り]
Initial analyses showed that asteroid Ryugu’s composition is close to CI (Ivuna-like) carbonaceous chondrites (CCs) – the chemically most primitive meteorites, characterized by near-solar abundances for most elements. However, some isotopic signat...
Yuto Takei   Takanao Saiki   Yuichi Tsuda   
Frontiers in Space Technologies 3 2022年12月 [査読有り]
There are a number of deep space probes that are currently in operation with diverse destinations and objectives. For example, the Japanese Hayabusa2 and the U.S. OSIRIS-REx missions are both sample returns, targeting different near-Earth asteroid...
Japanese Hayabusa2 spacecraft has successfully carried out an impact experiment using a small carry-on impactor (SCI) on an asteroid (162173) Ryugu. We examine the size distribution of particles inside and outside an artificial impact crater (the ...
Stefania Soldini   Takanao Saiki   Yuichi Tsuda   
Frontiers in Space Technologies 3 2022年11月 [査読有り]
On 5 April 2019, the Hayabusa 2 spacecraft performed the first successful artificial impact experiment on an asteroid. The Small Carry-on Impactor (SCI) device was deployed at an altitude of 500 m above Ryugu’s surface. The 2 kg copper projectile ...
Timo Hopp   Nicolas Dauphas   Yoshinari Abe   Jérôme Aléon   Conel M. O’D. Alexander   Sachiko Amari   Yuri Amelin   Ken-ichi Bajo   Martin Bizzarro   Audrey Bouvier   Richard W. Carlson   Marc Chaussidon   Byeon-Gak Choi   Andrew M. Davis   Tommaso Di Rocco   Wataru Fujiya   Ryota Fukai   Ikshu Gautam   Makiko K. Haba   Yuki Hibiya   Hiroshi Hidaka   Hisashi Homma   Peter Hoppe   Gary R. Huss   Kiyohiro Ichida   Tsuyoshi Iizuka   Trevor R. Ireland   Akira Ishikawa   Motoo Ito   Shoichi Itoh   Noriyuki Kawasaki   Noriko T. Kita   Kouki Kitajima   Thorsten Kleine   Shintaro Komatani   Alexander N. Krot   Ming-Chang Liu   Yuki Masuda   Kevin D. McKeegan   Mayu Morita   Kazuko Motomura   Frédéric Moynier   Izumi Nakai   Kazuhide Nagashima   David Nesvorný   Ann Nguyen   Larry Nittler   Morihiko Onose   Andreas Pack   Changkun Park   Laurette Piani   Liping Qin   Sara S. Russell   Naoya Sakamoto   Maria Schönbächler   Lauren Tafla   Haolan Tang   Kentaro Terada   Yasuko Terada   Tomohiro Usui   Sohei Wada   Meenakshi Wadhwa   Richard J. Walker   Katsuyuki Yamashita   Qing-Zhu Yin   Tetsuya Yokoyama   Shigekazu Yoneda   Edward D. Young   Hiroharu Yui   Ai-Cheng Zhang   Tomoki Nakamura   Hiroshi Naraoka   Takaaki Noguchi   Ryuji Okazaki   Kanako Sakamoto   Hikaru Yabuta   Masanao Abe   Akiko Miyazaki   Aiko Nakato   Masahiro Nishimura   Tatsuaki Okada   Toru Yada   Kasumi Yogata   Satoru Nakazawa   Takanao Saiki   Satoshi Tanaka   Fuyuto Terui   Yuichi Tsuda   Sei-ichiro Watanabe   Makoto Yoshikawa   Shogo Tachibana   Hisayoshi Yurimoto   
Science Advances 8(46) 2022年11月 [査読有り]
Little is known about the origin of the spectral diversity of asteroids and what it says about conditions in the protoplanetary disk. Here, we show that samples returned from Cb-type asteroid Ryugu have Fe isotopic anomalies indistinguishable from...