ACHIEVEMENT

• Mar. 2023 The Encouragement Award for Graduate programs (Master Course); The University of Tokyo, The School of Science, Department of Astronomy

Published (Lead : 5  Co : 2)

1. Y. Shiraishi and 12 co-authors [T. Tokuno at 7th] (2025) “Two unseen massive white dwarf candidates in close binaries” Publications of the Astronomical Society of Japan, 78, 2, p.382. NASA/ADS

2. T. Tokuno (2025) “Engulfment of a hot Jupiter as a possible origin of the rapid spin and internal spin misalignment of the planet-hosting red giant Kepler-56" Monthly Notices of the Royal Astronomical Society, 544, 3, p.2835. NASA/ADS

3. T. Tokuno, K. Namekata, H. Maehara, S. Toriumi (2025) “Temporal Variation of Flare Occurrence Rates via the Spot Evolution on the Sun and Solar-type Stars”, Astrophysical Journal, 985, p.158. NASA/ADS

4. T.Tokuno, A. Fukui & T.K.Suzuki (2024) “A Novel Method to Constrain Tidal Quality Factor from A Non-synchronized Exoplanetary System”, Astrophysical Journal, 973, p.128. NASA/ADS

5. M.Matsuoka, T.K.Suzuki, T.Tokuno & K.Kakiuchi (2024) “Effect of Magnetic diffusion in the Chromosphere on the Solar Wind”, Astrophysical Journal, 970, p.16. NASA/ADS

6. T.Tokuno, T.K.Suzuki & M.Shoda (2023) “Transition of latitudinal differential rotation as a possible cause of weakened magnetic braking of solar-type stars”, Monthly Notices of the Royal Astronomical Society, 520, 1, p.418. NASA/ADS

7. T.Tokuno & M.Takata (2022) “Asteroseismology of the dip structure in period spacings of rapidly rotating γ Doradus stars caused by the coupling between core and envelope oscillations”, Monthly Notices of the Royal Astronomical Society, 514, 3, p.4140. NASA/ADS

In preparation / Under Review (Lead : 0  Co : 0)

International Conference (Lead : 7  Co : 2)

1. T.Tokuno "Engulfment of a Hot Jupiter as a Possible Origin of Peculiar Rotation of Red Giant Kepler-56" (Oral), Cool Stars 23 (Tokyo, Japan), 15th-19th Jun. 2026

2. T.Tokuno "Hypothesis on the Relationship between Buddha and Eclipse in the Theravāda scriptures" (Poster, P68), Space Climate 9 (Nagoya, Japan), 1st-4th Oct. 2024

3. A.Fukui, T.Tokuno, Takeru K. Suzuki, Norio Narita, the MuSCAT team; the IRD Intensive team; the IRD Instrument team "An Ultrashort-Period, Ultracool Dwarf Transiting an M dwarf" (poster, poster 72), The 22nd Cambridge Workshop: Cool Stars, Stellar Systems and the Sun (San Diego, US), 24th-28th Jun. 2024

4. T.Tokuno, A.Fukui & T.K.Suzuki "A Novel Method to Constrain Tidal Quality Factor from Non-synchronized Exoplanetary System" (Oral, PCG19-19), Japan Geoscience Union Meeting 2024 (Chiba, Japan), 28th May. 2024

5. T.Tokuno, A.Fukui & T.K.Suzuki "A novel method to constrain tidal quality factor of low-mass stars without age using close-in gaseous planet systems" (Poster, 617.02),Extra Solar Systems V (Christchurch, New Zealand), 16th-21st Mar. 2024

6. T.Tokuno, A.Fukui & T.K.Suzuki "A novel method to constrain tidal quality factor of low-mass stars without age using close-in gaseous planet systems" (Poster, P3.11), East Asian Young Astronomers Meeting 2024 (Chiangmai, Thai), 2nd Feb. 2024 

7. T.Tokuno, T.K.Suzuki & M.Shoda “Transition of latitudinal differential rotation as a possible cause of weakened magnetic braking of solar-type stars” (Oral, SA-9-I4) ,7th Asia-Pacific Conference on Plasma Physics (Nagoya, Japan), 17th Dec. 2023 *Invited

8. A. Fukui, T. Hirano, N.Narita, T.K. Suzuki, T.Tokuno, M.Ikoma, The MuSCAT Team, The IRD  Intensive Team, The IRD Instrument Team "Discovery of an Ultra-short-period, Ultra-cool Dwarf around an M dwarf "(Oral、PEM11-P09), Japan Geoscience Union Meeting 2023(Chiba, Japan), 5th May. 2023

9. T.Tokuno, T.K.Suzuki & M.Shoda "Effect of latitudinal differential rotation on long-time evolution of stellar spin" (contribution, poster, poster 142), The 21st Cambridge Workshops of Cool Stars , Stellar Systems and the Sun (Toulouse, France), 4-9th Jul. 2022