Zobrazeno 1 - 10
of 219
pro vyhledávání: '"Cho, Yuichiro"'
Dating rocks with a precision of $\pm$200 Myr (2$\sigma$) has been required to understand the Martian habitability and volcanic history around 4000 Myr ago. In situ potassium-argon (K-Ar) dating techniques employing spot-by-spot laser ablation have b
Externí odkaz:
http://arxiv.org/abs/2306.11370
Autor:
Tsumura, Kohji, Matsuura, Shuji, Sano, Kei, Iwata, Takahiro, Yano, Hajime, Kitazato, Kohei, Takimoto, Kohji, Yamada, Manabu, Morota, Tomokatsu, Kouyama, Toru, Hayakawa, Masahiko, Yokota, Yasuhiro, Tatsumi, Eri, Matsuoka, Moe, Sakatani, Naoya, Honda, Rie, Kameda, Shingo, Suzuki, Hidehiko, Cho, Yuichiro, Yoshioka, Kazuo, Ogawa, Kazunori, Shirai, Kei, Sawada, Hirotaka, Sugita, Seiji
Zodiacal light (ZL) is sunlight scattered by interplanetary dust particles (IDPs) at optical wavelengths. The spatial distribution of IDPs in the Solar System may hold an important key to understanding the evolution of the Solar System and material t
Externí odkaz:
http://arxiv.org/abs/2303.07013
Autor:
Schröder, Stefan, Sakatani, Naoya, Honda, Rie, Tatsumi, Eri, Yokota, Yasuhiro, Domingue, Deborah, Cho, Yuichiro, Kameda, Shingo, Kitazato, Kohei, Kouyama, Toru, Matsuoka, Moe, Miura, Akira, Morota, Tomokatsu, Okada, Tatsuaki, Sawada, Hirotaka, Senshu, Hiroki, Shimaki, Yuri, Sugita, Seiji, Tanaka, Satoshi, Yabuta, Hikaru, Yamada, Manabu, Grott, Matthias, Hamm, Maximilian, Ho, Tra-Mi, Jaumann, Ralf, Mottola, Stefano, Otto, Katharina, Schmitz, Nicole, Scholten, Frank
Publikováno v:
A&A 666, A164 (2022)
Context. After landing on C-type asteroid Ryugu, MASCOT imaged brightly colored, submillimeter-sized inclusions in a small rock. Hayabusa2 successfully returned a sample of small particles from the surface of Ryugu, but none of these appear to harbor
Externí odkaz:
http://arxiv.org/abs/2209.00856
Autor:
Mori, Shoki, Boettger, Ute, Buder, Maximilian, Cho, Yuichiro, Dietz, Enrico, Hagelschuer, Till, Hübers, Heinz-Wilhelm, Kameda, Shingo, Kopp, Emanuel, Prieto-Ballesteros, Olga, Rull, Fernando, Ryan, Conor, Schroeder, Susanne, Sugita, Seiji, Tabata, Haruhisa, Usui, Tomohiro, Yumoto, Koki
Accurate wavelength calibration is critical for qualitative and quantitative spectroscopic measurements. Many spectrometers for planetary exploration are equipped with onboard calibration sources. However, such calibration sources are not always avai
Externí odkaz:
http://arxiv.org/abs/2205.10319
Autor:
Hirata, Naoyuki, Morota, Tomokatsu, Cho, Yuichiro, Kanamaru, Masanori, Watanabe, Sei-ichiro, Sugita, Seiji, Hirata, Naru, Yamamoto, Yukio, Noguchi, Rina, Shimaki, Yuri, Tatsumi, Eri, Yoshioka, Kazuo, Sawada, Hirotaka, Yokota, Yasuhiro, Sakatani, Naoya, Hayakawa, Masahiko, Matsuoka, Moe, Honda, Rie, Kameda, Shingo, Yamada, Mamabu, Kouyama, Toru, Suzuki, Hidehiko, Honda, Chikatoshi, Ogawa, Kazunori, Tsuda, Yuichi, Yoshikawa, Makoto, Saiki, Takanao, Tanaka, Satoshi, Terui, Fuyuto, Nakazawa, Satoru, Kikuchi, Shota, Yamaguchi, Tomohiro, Ogawa, Naoko, Ono, Go, Mimasu, Yuya, Yoshikawa, Kent, Takahashi, Tadateru, Takei, Yuto, Fujii, Atsushi, Takeuchi, Hiroshi, Okada, Tatsuaki, Shirai, Kei, Iijima, Yu-ichi
Publikováno v:
Icarus Volume 338, 1 March 2020, 113527
Asteroid 162173 Ryugu has numerous craters. The initial measurement of impact craters on Ryugu, by Sugita et al. (2019), is based on Hayabusa2 ONC images obtained during the first month after the arrival of Hayabusa2 in June 2018. Utilizing new image
Externí odkaz:
http://arxiv.org/abs/2205.05818
Autor:
Takaki, Naofumi, Cho, Yuichiro, Morota, Tomokatsu, Tatsumi, Eri, Honda, Rie, Kameda, Shingo, Yokota, Yasuhiro, Sakatani, Naoya, Kouyama, Toru, Hayakawa, Masahiko, Matsuoka, Moe, Yamada, Manabu, Honda, Chikatoshi, Suzuki, Hidehiko, Yoshioka, Kazuo, Ogawa, Kazunori, Sawada, Hirotaka, Michel, Patrick, Sugita, Seiji
Understanding the geological modification processes on asteroids can provide information concerning their surface history. Images of small asteroids from spacecraft show a depletion in terms of smaller craters. Seismic shaking was considered to be re
Externí odkaz:
http://arxiv.org/abs/2112.14096
Autor:
Kouyama, Toru, Tatsumi, Eri, Honda, Chikatoshi, Honda, Rie, Morota, Tomokatsu, Yokota, Yasuhiro, Kameda, Shingo, Yamada, Manabu, Suzuki, Hidehiko, Sakatani, Naoya, Hayakawa, Masahiko, Cho, Yuichiro, Matsuoka, Moe, Yoshioka, Kazuo, Sawada, Hirotaka, Sugita, Seiji
Hayabusa2, a Japanese sample-return mission to a C-type asteroid, arrived at its target 162173 Ryugu in June 2018. The optical navigation cameras (ONC-T, ONC-W1, ONC-W2) successfully obtained numerous images of Ryugu. ONC-T is a telescopic framing ca
Externí odkaz:
http://arxiv.org/abs/2112.09404
Autor:
Sugimoto, Chiho, Tatsumi, Eri, Cho, Yuichiro, Morota, Tomokatsu, Honda, Rie, Kameda, Shingo, Yokota, Yosuhiro, Yumoto, Koki, Aoki, Minami, DellaGiustina, Daniella N., Michikami, Tatsuhiro, Hiroi, Takahiro, Domingue, Deborah L., Michel, Patrick, Schröder, Stefan E., Nakamura, Tomoki, Yamada, Manabu, Sakatani, Naoya, Kouyama, Toru, Honda, Chikatoshi, Hayakawa, Masahiko, Matsuoka, Moe, Suzuki, Hidehiko, Yoshioka, Kazuo, Ogawa, Kazunori, Sawada, Hirotaka, Arakawa, Masahiko, Saiki, Takanao, Imamura, Hiroshi, Takagi, Yasuhiko, Yano, Hajime, Shirai, Kei, Okamoto, Chisato, Tsuda, Yuichi, Nakazawa, Satoru, Iijima, Yuichi, Sugita, Seiji
The near-Earth asteroid (162173) Ryugu displays a Cb-type average spectrum and a very low average normal albedo of 0.04. Although the majority of boulders on Ryugu have reflectance spectra and albedo similar to the Ryugu average, a small fraction of
Externí odkaz:
http://arxiv.org/abs/2110.14974
Autor:
Sugimoto, Chiho, Tatsumi, Eri, Cho, Yuichiro, Morota, Tomokatsu, Honda, Rie, Kameda, Shingo, Yokota, Yosuhiro, Yumoto, Koki, Aoki, Minami, DellaGiustina, Daniella N., Michikami, Tatsuhiro, Hiroi, Takahiro, Domingue, Deborah L., Michel, Patrick, Schröder, Stefan, Nakamura, Tomoki, Yamada, Manabu, Sakatani, Naoya, Kouyama, Toru, Honda, Chikatoshi, Hayakawa, Masahiko, Matsuoka, Moe, Suzuki, Hidehiko, Yoshioka, Kazuo, Ogawa, Kazunori, Sawada, Hirotaka, Arakawa, Masahiko, Saiki, Takanao, Imamura, Hiroshi, Takagi, Yasuhiko, Yano, Hajime, Shirai, Kei, Okamoto, Chisato, Tsuda, Yuichi, Nakazawa, Satoru, Iijima, Yuichi, Sugita, Seiji
Many small boulders with reflectance values higher than 1.5 times the average reflectance have been found on the near-Earth asteroid 162173 Ryugu. Based on their visible wavelength spectral differences, Tatsumi et al. (2021) defined two bright boulde
Externí odkaz:
http://arxiv.org/abs/2110.14969
Autor:
Cho, Yuichiro, Yumoto, Koki, Yabe, Yuna, Mori, Shoki, Ogura, Jo A., Yada, Toru, Miyazaki, Akiko, Yogata, Kasumi, Hatakeda, Kentaro, Nishimura, Masahiro, Abe, Masanao, Usui, Tomohiro, Sugita, Seiji
Hayabusa2 collected 5.4 g of samples from the asteroid (162173) Ryugu and brought them back to Earth. Obtaining multiband images of these samples with the spectral bands comparable to those used for remote-sensing observations is important for charac
Externí odkaz:
http://arxiv.org/abs/2109.13480