Professor
Department of Planetology　Graduate School of Science　Faculty of Science

• e-mail：ohtsuki(at)tiger.kobe-u.ac.jp
• Office: The Graduate School of Science and Technology Bldg 3, room 601
• Mailing address: Department of Planetology, Graduate School of Science, Kobe University, Nada, Kobe 657-8501, Japan
• URL（personal): http://www.lab.kobe-u.ac.jp/sci-origins/
• Planetary Astrophysics Laboratory WEB

Research Interests:

　 My research interests include theoretical studies on planet formation and origin and evolution of small solar system bodies, such as asteroids, satellites, and planetary rings, using numerical and analytic methods.

Recent Publications:　

• Maeda, N., K. Ohtsuki, R. Suetsugu, Y. Shibaike, T. Tanigawa, M. N. Machida (2024). Delivery of dust particles from protoplanetary disks onto circumplanetary disks of giant planets. Astrophys. J. 968, 62 (14pp).
• Ashton, E., C.-K. Chang, Y.-T. Chen, M. J. Lehner, S.-Y. Wang, M. Alexandersen, Y.-J. Choi, W. C. Fraser, A. P. G. Contreras, T. Ito, Y. JeongAhn, J. Ji, J. J. Kavelaars, M.-J. Kim, S. M. Lawler, J. Li, Z.-Y. Lin, P. S. Lykawka, H.-K. Moon, S. More, M. Muñoz-Gutiérrez, K. Ohtsuki, R. E. Pike, T. Terai, S. Urakawa, F. Yoshida, H. Zhang, H.-B. Zhao, J.-L. Zhou (2023). FOSSIL: III. Lightcurves of 371 Trans-Neptunian Objects. Astrophys. J. Suppl. 267, 33 (13pp).
• Maeda, N., K. Ohtsuki, T. Tanigawa, M. N. Machida, R. Suetsugu (2022). Delivery of gas onto the circumplanetary disk of giant planets: Planetary-mass dependence of the source region of accreting gas and mass accretion rate. Astrophys. J. 935, 56 (12pp).
• Uehata, K., Terai, T., Ohtsuki, K., Yoshida, F. (2022). Size distribution of small Jupiter Trojans in the L₅ swarm. Astron. J. 163, 213 (10pp).
• Chang, C.-K., Y.-T. Chen, W. C. Fraser, et al. （21番目）(2022). FOSSIL: II. The rotation periods of small-sized Hilda asteroids. Astrophys. J. Suppl. 259, 7 (8pp).
• Maeda, N., T. Terai, K. Ohtsuki, F. Yoshida, K. Ishihara, T. Deyama (2021). Size distributions of bluish and reddish small main-belt asteroids obtained by Subaru/Hyper Suprime-Cam. Astron. J. 162, 280 (15pp).
• Chang, C.-K., Y.-T. Chen, W. C. Fraser, et al. （23番目）(2021). FOSSIL: I. The spin rate limit of Jupiter Trojans. Planet. Science J. 2, 191 (11pp).
• Homma, T., Ohtsuki, K., Maeda, N., Suetsugu, R., Machida, M. N., Tanigawa, T. (2020). Delivery of pebbles from the protoplanetary disk into circumplanetary disks. Astrophys. J. 903, 98 (17pp).
• Hirata, N., Suetsugu, R., Ohtsuki, K. (2020). A global system of furrows on Ganymede indicative of their creation in a single impact event. Icarus 352, 113941 (13pp).
• Ohtsuki, K., Kawamura, H., Hirata, N., Daisaka, H., Kimura, H. (2020). Size of the smallest particles in Saturn’s rings. Icarus 344, 113346 (11pp).
• Salo, H., K. Ohtsuki, M. Lewis (2018). Computer simulations of planetary rings. In ‘Planetary Ring Systems’ (M. Tiscareno & C. Murray. Eds.), Cambridge Univ. Press, pp. 434-493.
• Suetsugu, R., K. Ohtsuki (2017). Distribution of captured planetesimals in circumplanetary gas disks and implications for accretion of regular satellites. Astrophys. J. 839, 66 (15pp).
• Hyodo, R., S. Charnoz, K. Ohtsuki, H. Genda (2017). Ring formation around giant planets by tidal disruption of a single passing large Kuiper belt object. Icarus 282, 195-213.
• Hyodo, R., Ohtsuki, K. (2015), Saturn’s F ring and shepherd satellites a natural outcome of satellite system formation. Nature Geosci., 8, 686-689.

Academic Associations:　

• Japanese Society for Planetary Science (Japanese)
• Astronomical Society of Japan (Japanese)
• Japan Geoscience Union
• Division for Planetary Sciences for the American Astronomical Society
• American Geophysical Union
• International Astronomical Union

Updated June 18 2024