153 citations · 520 across the 10 of their papers we have counts for
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Multi-Color Simultaneous Photometry of the T-Tauri Star Having A Planetary Candidate CVSO 30
Masahiro Onitsuka, Akihiko Fukui, Norio Narita +4
We present three-band simultaneous observations of a weak-line T-Tauri star CVSO~30 (PTFO~8-8695), which is one of the youngest objects having a candidate transiting planet. The da…
Ground-based Transit Observation of the Habitable-zone Super-Earth K2-3d
Akihiko Fukui, John Livingston, Norio Narita +4
We report the first ground-based transit observation of K2-3d, a 1.5 R_Earth planet supposedly within the habitable zone around a bright M-dwarf host star, using the Okayama 188 cm…
The K2-ESPRINT Project III: A Close-in Super-Earth around a Metal-rich Mid-M Dwarf
Teruyuki Hirano, Akihiko Fukui, Andrew W. Mann +18
We validate a planet on a close-in orbit ( days) around K2-28 (EPIC 206318379), a metal-rich M4-type dwarf in the Campaign 3 fiel…
Characterization of the K2-19 Multiple-Transiting Planetary System via High-Dispersion Spectroscopy, AO Imaging, and Transit Timing Variations
Norio Narita, Teruyuki Hirano, Akihiko Fukui +16
K2-19 (EPIC201505350) is an interesting planetary system in which two transiting planets with radii ~ 7 (inner planet b) and ~ 4 (outer planet c) have orbit…
Demonstrating High-precision, Multiband Transit Photometry with MuSCAT: A Case for HAT-P-14b
Akihiko Fukui, Norio Narita, Yui Kawashima +6
The Multicolor Simultaneous Camera for studying Atmospheres of Transiting exoplanets (MuSCAT) is an optical three-band (g'_2-, r'_2-, and z_{s,2}-band) imager that was recently dev…
The K2-ESPRINT Project. I. Discovery of the Disintegrating Rocky Planet K2-22b with a Cometary Head and Leading Tail
R. Sanchis-Ojeda, S. Rappaport, E. Pallé +28
We present the discovery of a transiting exoplanet candidate in the K2 Field-1 with an orbital period of 9.1457 hr: K2-22b. The highly variable transit depths, ranging from 0…
Multi-band, Multi-epoch Observations of the Transiting Warm Jupiter WASP-80b
Akihiko Fukui, Yui Kawashima, Masahiro Ikoma +22
WASP-80b is a warm Jupiter transiting a bright late-K/early-M dwarf, providing a good opportunity to extend the atmospheric study of hot Jupiters toward the lower temperature regim…
Multi-Color Transit Photometry of GJ 1214b through BJHKs-Bands and a Long-Term Monitoring of the Stellar Variability of GJ 1214
Norio Narita, Akihiko Fukui, Masahiro Ikoma +19
We present 5 new transit light curves of GJ 1214b taken in BJHKs-bands. Two transits were observed in B-band using the Suprime-Cam and the FOCAS instruments onboard the Subaru 8.2m…
Optical-to-Near-Infrared Simultaneous Observations for the Hot Uranus GJ3470b: A Hint for Cloud-free Atmosphere
Akihiko Fukui, Norio Narita, Kenji Kurosaki +15
We present optical (g', R_c, and I_c) to near-infrared (J) simultaneous photometric observations for a primary transit of GJ3470b, a Uranus-mass transiting planet around a nearby M…