AF
A. Fukui
astro-ph.EPastro-ph.SRastro-ph.GAastro-ph.IMastro-phastro-ph.HEbinaries: generalExoplanetsGalaxy: stellar contentGiant planets
On Valency
published · living versionsW_98625dp4·v1 · currentpublished
A Cold Neptune-Mass Planet OGLE-2007-BLG-368Lb: Cold Neptunes Are Common
with T. Sumi, D. P. Bennett, I. A. Bond, A. Udalski +105
1 version
Preprints & journals
356 papers in the corpus · 2007–2026TOI-7169 b: A Hot Jupiter Transiting a Metal-Poor Star2603.25787v2 · Joshua D. Simon, Joseph E. Rodriguez, Jhon Yana Galarza et al.2026 · 0 citationsAstronom.J.172:118,2026
The Occurrence Rate of Nearby Planetary Companions to Hot Jupiters2601.13302v2 · Lizhou Sha, Andrew M. Vanderburg, Chelsea X. Huang et al.2026 · 1 citationAJ 172 (2026) 183
The Hot Neptune Initiative (HONEI) III. An ultra-hot super Neptune orbiting the metal-rich subgiant star TOI-5646: the largest host for a desert dweller2608.24311v1 · L. Mancini, F. Manni, D. Kubyshkina et al.2026 · 0 citationsarXiv
A Search for helium in the atmospheres of three sub-Neptunes and a super-Earth around M-dwarfs2608.19030v1 · Kiyoe Kawauchi, Norio Narita, Yuichi Ito et al.2026 · 0 citationsarXiv
Discovery of an Eccentric Hot Super-Jupiter Leaving the Transiting Geometry of the Early-A-type star TOI-13552608.17387v1 · Noriharu Watanabe, Norio Narita, Akihiko Fukui et al.2026 · 0 citationsarXiv
A Pair of Warm Saturn-mass Planets near the 2:1 Mean Motion Resonance around TOI-38502608.11328v1 · Sean Collins, Michelle Kunimoto, Nicolas B. Cowan et al.2026 · 0 citationsarXiv
TOI-2147 b and TOI-6019 b: Two eccentric warm Jupiters detected and characterized with TESS and MaHPS2606.20224v3 · Luis Thomas, Louise D. Nielsen, Hanna Kellermann et al.2026 · 0 citationsarXiv
The Orbital Eccentricity--Radius Distribution for Warm, Single Planets in TESS2602.20015v2 · Tyler R. Fairnington, Jiayin Dong, Chelsea X. Huang et al.2026 · 0 citationsarXiv
The GAPS programme at TNG: LXXVI. TOI-1533: a compact system hosting a super-Neptune-mass pair with disparate radii2606.30799v2 · G. Mantovan, V. Nascimbeni, S. Desidera et al.2026 · 0 citationsarXiv
Stellar Multiplicity of M Dwarfs with Short-period Giant Planets, and the Characterization of TOI-5628Ab2607.10177v1 · Tianjun Gan, Alexandrine L'Heureux, Charles Cadieux et al.2026 · 0 citationsarXiv
Parameter estimation from the transit light curve including gravitational lensing effects2607.10175v1 · Shinta Kasuya, Akihiko Fukui, Ayana Suzuki et al.2026 · 0 citationsarXiv
Observing a 542-day transiting giant with large TTVs: The 2025 transit of HIP 41378 f and new constraints on the outer system2606.23551v2 · Pietro Leonardi, Alexandre Santerne, Luca Borsato et al.2026 · 0 citationsarXiv
TOI-6884b: A low-mass brown dwarf transiting a slightly evolved star2606.29666v1 · Akanksha Khandelwal, Shubhendra Nath Das, Rishikesh Sharma et al.2026 · 0 citationsarXiv
The mass of TOI-1883 b: A low density super-Neptune in the ridge regime transiting an early-M dwarf2606.06868v1 · Izuru Fukuda, Norio Narita, Akihiko Fukui et al.2026 · 0 citationsarXiv
Hidden Gems in TESS: sherlock finds two new rocky planets around nearby M dwarfs2601.21774v1 · M. Timmermans, M. D'evora-Pajares, F. J. Pozuelos et al.2026 · 0 citationsMon Not R Astron Soc (2026)
Multicolour Validation of Two Temperate Mini-Neptunes Around M-dwarf Habitable Zones2512.06817v2 · Chengzi Jiang, Aleksandra Selezneva, Hannu Parviainen et al.2025 · 0 citationsMNRAS, Volume 547, id.stag367 (2026)
Mass Production of 2023 KMTNet Microlensing Planets. II: Two Planets and A Brown Dwarf2603.13887v2 · Zhixing Li, Hongyu Li, Weicheng Zang et al.2026 · 1 citationarXiv
TOI-4616 b: a benchmark Earth-sized planet transiting a nearby M4 dwarf2603.10905v1 · F. Zong Lang, B. O. Demory, Y. Gomez Maqueo Chew et al.2026 · 0 citationsarXiv
WD 1054-226 revisited: a stable transiting debris system2603.07677v1 · J. Korth, A. J. Mustill, H. Parviainen et al.2026 · 1 citationarXiv
Gas-depleted planet formation occurred in the four-planet system around the red dwarf LHS 19032602.11271v1 · Thomas G. Wilson, Anna M. Simpson, Andrew Collier Cameron et al.2026 · 1 citationarXiv
TOI-3862 b: A dense super-Neptune deep in the hot Neptune desert2601.10450v1 · Ilaria Carleo, Amadeo Castro-Gonz'alez, Enric Pall'e et al.2026 · 1 citationarXiv
A young progenitor for the most common planetary systems in the Galaxy2601.10598v1 · John H. Livingston, Erik A. Petigura, Trevor J. David et al.2026 · 13 citationsNature 649, 310-314 (2026)
Constraining Lens Masses in Moderately to Highly Magnified Microlensing Events from Gaia2504.11546v2 · U. Pylypenko, \L. Wyrzykowski, P. J. Miko\lajczyk et al.2025 · 1 citationA&A 705, A24 (2026)
Characterization of two new transiting sub-Neptunes and a terrestrial planet around M-dwarf hosts2601.07414v1 · E. Poultourtzidis, G. Lacedelli, E. Pall'e et al.2026 · 2 citationsarXiv
Two temperate Earth- and Neptune-sized planets orbiting fully convective M dwarfs2601.05799v1 · Madison G. Scott, Georgina Dransfield, Mathilde Timmermans et al.2026 · 1 citationarXiv
From Earths to Super-Earths: Five New Small Planets Transiting M Dwarf Stars2512.11971v1 · Jonathan Gomez Barrientos, Heather A. Knutson, Morgan Saidel et al.2025 · 2 citationsarXiv
Sibling Sub-Neptunes Around Sibling M Dwarfs: TOI-521 and TOI-9122509.14782v2 · G. Lacedelli, E. Pall'e, R. Luque et al.2025 · 0 citationsarXiv
Precise mass and radius determination for two new and one known Neptune-sized planets around G Dwarf hosts2511.20119v1 · Ilaria Carleo, Grzegorz Nowak, Felipe Murgas et al.2025 · 1 citationarXiv
Kepler-1624b Has No Significant Transit Timing Variations2511.17709v1 · Haedam Im, Morgan Saidel, Heather A. Knutson et al.2025 · 0 citationsThe Astronomical Journal, 170:336 (9pp), 2025 December
Stellar Obliquities of Young Systems, Atmospheres Undergoing Contraction and Escape (SOYSAUCE): a likely aligned orbit for the 3 Myr planet TIDYE-1 b2511.14838v1 · Madyson G. Barber, Andrew W. Mann, Marshall C. Johnson et al.2025 · 3 citationsarXiv
Six binary brown dwarf candidates identified by microlensing2510.23933v1 · Cheongho Han, Chung-Uk Lee, Ian A. Bond et al.2025 · 0 citationsarXiv
MANGOS II: Five new giant planets orbiting low-mass stars2510.11528v1 · G. Dransfield, M. Timmermans, D. Sebastian et al.2025 · 3 citationsarXiv
A Comprehensive Analysis of Three Microlensing Planet Candidates with the Planet/Binary Degeneracy2509.18345v1 · Jiyuan Zhang, Weicheng Zang, Yoon-Hyun Ryu et al.2025 · 2 citationsarXiv
Identifying close-in Jupiters that arrived via disk migration: Evidence of primordial alignment, preference of nearby companions and hint of runaway migration2509.16322v1 · Yugo Kawai, Akihiko Fukui, Noriharu Watanabe et al.2025 · 4 citationsarXiv
The Polar Orbit of TOI-2374 b, a Planet in the Neptunian Ridge2509.11565v1 · Samuel W. Yee, Patrick Tamburo, Gudmundur Stef'ansson et al.2025 · 5 citationsarXiv
Characterization of starspots on a young M-dwarf K2-25: multi-band observations of stellar photometric variability and planetary transits2403.13946v1 · Mayuko Mori, Kai Ikuta, Akihiko Fukui et al.2024 · 15 citationsarXiv
Multi-band, Multi-epoch Photometry of the Spot-crossing System TOI-3884: Refined System Geometry and Spot Properties2506.06445v2 · Mayuko Mori, Akihiko Fukui, Teruyuki Hirano et al.2025 · 7 citationsarXiv
Six microlensing planets detected via sub-day signals during the 2023 -- 2024 season2509.05522v1 · Cheongho Han, Chung-Uk Lee, Andrzej Udalski et al.2025 · 1 citationarXiv
Four binary microlenses with directly measured masses2508.11079v1 · Cheongho Han, Andrzej Udalski, Chung-Uk Lee et al.2025 · 1 citationarXiv
The mass of TOI-654 b: A short-period sub-Neptune transiting a mid-M dwarf2507.16222v1 · Kai Ikuta, Norio Narita, Takuya Takarada et al.2025 · 3 citationsarXiv
Updated Masses for the Gas Giants in the Eight-Planet Kepler-90 System Via Transit-Timing Variation and Radial Velocity Observations2507.13588v1 · David E. Shaw, Lauren M. Weiss, Eric Agol et al.2025 · 4 citationsarXiv
An Aligned Sub-Neptune Revealed with MAROON-X and a Tendency Towards Alignment for Small Planets2507.04291v1 · Alex S. Polanski, Ian J.M. Crossfield, Andreas Seifahrt et al.2025 · 0 citationsarXiv
The TESS Grand Unified Hot Jupiter Survey. III. Thirty More Giant Planets2507.01855v1 · Samuel W. Yee, Joshua N. Winn, Joel D. Hartman et al.2025 · 5 citationsarXiv
KMT-2022-BLG-0086: Another binary-lens binary-source microlensing event2506.20914v1 · Sun-Ju Chung, Kyu-Ha Hwang, Jennifer C. Yee et al.2025 · 1 citationarXiv
11 New Transiting Brown Dwarfs and Very Low Mass Stars from TESS2501.09795v2 · Noah Vowell, Joseph E. Rodriguez, David W. Latham et al.2025 · 2 citationsarXiv
A transiting multi-planet system in the 61 million year old association Theia 1162407.19680v2 · Sydney Vach, George Zhou, Chelsea X. Huang et al.2024 · 4 citations2025MNRAS.540..806V
OGLE-2015-BLG-1609Lb: Sub-jovian planet orbiting a low-mass stellar or brown dwarf host2412.09676v2 · M.J. Mr'oz, R. Poleski, A. Udalski et al.2024 · 2 citationsA&A 698, A126 (2025)
A transiting giant planet in orbit around a 0.2-solar-mass host star2506.07931v2 · Edward M. Bryant, Andr'es Jord'an, Joel D. Hartman et al.2025 · 11 citationsarXiv
MOA-2022-BLG-091Lb and KMT-2024-BLG-1209Lb: Microlensing planets detected through weak caustic-crossing signals2505.22951v1 · Cheongho Han, Chung-Uk Lee, Andrzej Udalski et al.2025 · 2 citationsarXiv
Hidden Transits: TOI-2285 b is a Warmer sub-Neptune Likely with a Super-Earth Companion2505.22009v1 · Akihiko Fukui2025 · 1 citationResearch Notes of the AAS, Volume 9, Issue 4, id.73 (2025)
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