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Kai Ikuta
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Do Kepler superflare stars really include slowly rotating sun-like stars?—Results using APO 3.5 m telescope spectroscopic observations and Gaia-DR2 data
Y Notsu, H Maehara, S Honda, SL Hawley, JRA Davenport, K Namekata, ...
The Astrophysical Journal 876 (1), 58, 2019
1582019
Statistical studies of solar white-light flares and comparisons with superflares on solar-type stars
K Namekata, T Sakaue, K Watanabe, A Asai, H Maehara, Y Notsu, ...
The Astrophysical Journal 851 (2), 91, 2017
1312017
Statistical properties of superflares on solar-type stars: results using all of the Kepler primary mission data
S Okamoto, Y Notsu, H Maehara, K Namekata, S Honda, K Ikuta, ...
The Astrophysical Journal 906 (2), 72, 2021
712021
Time-resolved spectroscopy and photometry of M dwarf flare star YZ Canis Minoris with OISTER and TESS: Blue asymmetry in the Hα line during the non-white light flare
H Maehara, Y Notsu, K Namekata, S Honda, AF Kowalski, N Katoh, ...
Publications of the Astronomical Society of Japan 73 (1), 44-65, 2021
632021
Lifetimes and emergence/decay rates of star spots on solar-type stars estimated by Kepler data in comparison with those of sunspots
K Namekata, H Maehara, Y Notsu, S Toriumi, H Hayakawa, K Ikuta, ...
The Astrophysical Journal 871 (2), 187, 2019
612019
Time-resolved spectroscopic observations of an M-dwarf flare star EV Lacertae during a flare
S Honda, Y Notsu, K Namekata, S Notsu, H Maehara, K Ikuta, D Nogami, ...
Publications of the Astronomical Society of Japan 70 (4), 62, 2018
422018
Temporal evolution of spatially resolved individual star spots on a planet-hosting solar-type star: Kepler-17
K Namekata, JRA Davenport, BM Morris, SL Hawley, H Maehara, Y Notsu, ...
The Astrophysical Journal 891 (2), 103, 2020
272020
Unexpected superoutburst and rebrightening of AL Comae Berenices in 2015
M Kimura, T Kato, A Imada, K Ikuta, K Isogai, PA Dubovsky, S Kiyota, ...
Publications of the Astronomical Society of Japan 68 (1), L2, 2016
142016
Starspot Mapping with Adaptive Parallel Tempering. II. Application to TESS Data for M-dwarf Flare Stars AU Microscopii, YZ Canis Minoris, and EV Lacertae
K Ikuta, K Namekata, Y Notsu, H Maehara, S Okamoto, S Honda, ...
The Astrophysical Journal 948 (1), 64, 2023
122023
TOI-1696: A Nearby M4 Dwarf with a 3 R⊕ Planet in the Neptunian Desert
M Mori, JH Livingston, J De Leon, N Narita, T Hirano, A Fukui, KA Collins, ...
The Astronomical Journal 163 (6), 298, 2022
122022
A resonant sextuplet of sub-Neptunes transiting the bright star HD 110067
R Luque, HP Osborn, A Leleu, E Pallé, A Bonfanti, O Barragán, TG Wilson, ...
Nature 623 (7989), 932-937, 2023
112023
Starspot Mapping with Adaptive Parallel Tempering. I. Implementation of Computational Code
K Ikuta, H Maehara, Y Notsu, K Namekata, T Kato, S Notsu, S Okamoto, ...
The Astrophysical Journal 902 (1), 73, 2020
92020
Multiwavelength Campaign Observations of a Young Solar-type Star, EK Draconis. I. Discovery of Prominence Eruptions Associated with Superflares
K Namekata, VS Airapetian, P Petit, H Maehara, K Ikuta, S Inoue, Y Notsu, ...
The Astrophysical Journal 961 (1), 23, 2024
62024
The mass of TOI-519 b: A close-in giant planet transiting a metal-rich mid-M dwarf
T Kagetani, N Narita, T Kimura, T Hirano, M Ikoma, HT Ishikawa, ...
Publications of the Astronomical Society of Japan 75 (4), 713-721, 2023
62023
Apache Point Observatory (APO)/SMARTS Flare Star Campaign Observations. I. Blue Wing Asymmetries in Chromospheric Lines during Mid-M-Dwarf Flares from Simultaneous …
Y Notsu, AF Kowalski, H Maehara, K Namekata, K Hamaguchi, T Enoto, ...
The Astrophysical Journal 961 (2), 189, 2024
52024
An Earth-sized Planet around an M5 Dwarf Star at 22 pc
T Hirano, F Dai, JH Livingston, S Grziwa, KWF Lam, Y Kasagi, N Narita, ...
The Astronomical Journal 165 (3), 131, 2023
22023
Blue asymmetries in Balmer lines during mid M dwarf flares
Y Notsu, AF Kowalski, H Maehara, K Namekata, S Honda, T Enoto, ...
Posters from the TESS Science Conference II (TSC2), 118, 2021
22021
Statistical Study of Solar White-light Flares and Comparison with Superflares on Solar-type Stars
K Namekata, T Sakaue, K Watanabe, A Asai, H Maehara, Y Notsu, ...
Proceedings of the International Astronomical Union 13 (S340), 221-224, 2018
22018
Statistical studies of superflares on G-, K-, M-type stars from Kepler data
Y Notsu, H Maehara, S Honda, S Notsu, K Namekata, K Ikuta, D Nogami, ...
Radio Exploration of Planetary Habitability (AASTCS5) 49 (3), 400.03, 2017
12017
Gliese 12 b: A temperate Earth-sized planet at 12 pc ideal for atmospheric transmission spectroscopy
M Kuzuhara, A Fukui, JH Livingston, JA Caballero, JP de Leon, T Hirano, ...
The Astrophysical Journal Letters 967 (2), L21, 2024
2024
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