[*] Kazumasa Ohno, Masahiro Ikoma, Satoshi Okuzumi & Tadahiro Kimura
"A Dichotomy of the Mass-Metallicity Relation of Exoplanetary Atmospheres Demarcated by their Birthplace", submitted
[ADS]

[*] J. E. Libby-Roberts., A. Bello-Arufe., Z. K. Berta-Thompson., C. I. Canas., Y. Chachan., et al.  (incl. K. Ohno)
"The James Webb Space Telescope NIRSpec-PRISM Transmission Spectrum of the Super-Puff, Kepler-51d", submitted
[ADS]

[17] Kazumasa Ohno,  Everett, Schlawin, Taylor J. Bell, Murphy M. Matthew, Luis Welbanks et al. 2025
"A Possible Metal-Dominated Atmosphere Below the Thick Aerosols of GJ 1214 b Suggested by its JWST Panchromatic Transmission Spectrum",  ApJL, 979, L7
[ADS]  [Press Release from NAOJ]

[16] Kazumasa Ohno, 2024
"Photochemical Hazes in Exoplanetary Skies with Diamonds: Microphysical Modeling of Haze Composition Evolution via Chemical Vapor Deposition",  ApJ, 977, 188
[ADS]  [Research Highlight from Division of Science, NAOJ]

[15] Kazumasa Ohno and Jonathan J. Fortney, 2023
"Nitrogen as a Tracer of Giant Planet Formation. II.: Comprehensive Study of Nitrogen Photochemistry and Implications for Observing NH3 and HCN in Transmission and Emission Spectra", ApJ, 956, 125
[ADS]

[14] Kazumasa Ohno and Jonathan J. Fortney, 2023
"Nitrogen as a Tracer of Giant Planet Formation. I.: A Universal Deep Adiabatic Profile and Semi-analytical Predictions of Disequilibrium Ammonia Abundances in Warm Exoplanetary Atmospheres", ApJ, 946, 18
[ADS]

[13] Kazumasa Ohno, Pa Chia Thao, Andrew W. Mann, and Jonathan J. Fortney, 2022
"A Circumplanetary Dust Ring May Explain the Extreme Spectral Slope of the 10 Myr Young Exoplanet K2-33b", ApJL, 940, L30
[ADS] [AAS Nova Research Highlight]

[12] 大野 和正 (Kazumasa Ohno),  2022
"大気から探る惑星形成：原始太陽系円盤の影による木星大気組成の説明", 遊星人, 31, 2
[Link]

[11] Kazumasa Ohno and Jonathan J. Fortney, 2022
"A Framework for Characterizing Transmission Spectra of Exoplanets with Circumplanetary Rings", ApJ, 930, 50
[ADS]

[10] Kazumasa Ohno and Yuki Tanaka, 2021
"Grain Growth in Escaping Atmospheres: Implications for the Radius Inflation of Super-Puffs", ApJ, 920, 124
[ADS]

[9] Kazumasa Ohno and Takahiro Ueda, 2021
"Jupiter's "cold" formation in the protosolar disk shadow: An explanation for the planet's uniformly enriched atmosphere", A&A, 651, L2
[ADS] [A&A 2021 Highlighted paper] [ScienceNews]

[8] Kazumasa Ohno, Xi Zhang, Ryo Tazaki, and Satoshi Okuzumi, 2021
"Haze Formation on Triton", ApJ, 912, 37
[ADS]

[7] 大野 和正 (Kazumasa Ohno),  2020
"系外惑星「遠い世界の物語」その13　系外惑星大気中の鉱物雲 (Tales of distant exoplanet worlds (13)-Mineral clouds in exoplanetary atmospheres-)", 遊星人, 29, 3
[Link]

[6] Kazumasa Ohno and Yui Kawashima, 2020
"Super-Rayleigh Slopes in Transmission Spectra of Exoplanets Generated by Photochemical Haze", ApJL, 895, 47
[ADS]

[5] Kazumasa Ohno, Satoshi Okuzumi, and Ryo Tazaki, 2020
"Clouds of Fluffy Aggregates: How They Form in Exoplanetary Atmospheres and Influence Transmission Spectra", ApJ, 891, 131
[ADS]

[4] Kazumasa Ohno and Xi Zhang, 2019
"Atmospheres on Nonsynchronized Eccentric-tilted Exoplanets II: Thermal Light Curves", ApJ, 874, 2
[ADS]

[3] Kazumasa Ohno and Xi Zhang, 2019
"Atmospheres on Nonsynchronized Eccentric-tilted Exoplanets I: Dynamical Regimes", ApJ, 874, 1
[ADS]

[2] Kazumasa Ohno and Satoshi Okuzumi, 2018
"Microphysical Modeling of Mineral Clouds in GJ1214 b and GJ436 b: Predicting Upper Limits on the Cloud-Top Height", ApJ, 859, 34
[ADS]

[1] Kazumasa Ohno and Satoshi Okuzumi, 2017
"A Condensation-Coalescence Cloud Model for Exoplanetary Atmosheres: Formulation and Test Applications to Terrestrial and Jovian Clouds", ApJ, 835, 261
[ADS]

[33] Yuichi Ito, Tadahiro Kimura, Kazumasa Ohno, Yuka Fujii, & Masahiro Ikoma (2025)
"Monosilane Worlds: Sub-Neptunes with Atmospheres Shaped by Reduced Magma Oceans", ApJ, 987, 174
[ADS]

[32] C. Gascon., M. Lopez-Morales., R. J. MacDonald., J. K. Barstow., V. A. Boehm., et al.  (incl. K. Ohno) (2025)
"The HUSTLE Program: The UV to Near-IR Transmission Spectrum of the hot Jupiter KELT-7b", in press
[ADS]

[31] L. S. Wiser., T. Bell., M. R. Line., E. Schlawin., T. G. Beatty., et al.  (incl. K. Ohno) (2025)
"A Precise Metallicity and Carbon-to-Oxygen Ratio for a Warm Giant Exoplanet from its Panchromatic JWST Emission Spectrum", in press
[ADS]

[30] Q. Changeat, D. Bardet, K. Chubb, A. Dyrek, B. Edwards, K. Ohno, & O. Venot (2025)
"Aerosol Parameterization in Atmospheric Retrievals: Insights from Titan's Cassini Data and JWST Observations of Hot Jupiters", in press

[29] Yao Tang,  Jonathan Fortney, Francis Nimmo, Daniel Thorngren, Kazumasa Ohno, and Ruth Murray-Clay (2025)
"Reassessing Sub-Neptune Structure, Radii, and Thermal Evolution", in press
[ADS]

[28] Mathew. M. Murphy,  Thomas. G. Beatty., Everett Schlawin., Taylor J. Bell,  and Radica Michael., et al. (incl. K. Ohno) (2025)
"A Panchromatic Characterization of the Evening and Morning Atmospheres of WASP-107b: Composition and Cloud Variations, and Insights into the Effect of Stellar Contamination", AJ, 170, 61
[ADS]

[27] Sagnick Mukherjee,  Jonathan Fortney, Nicholas Wogan, David Sing, and Kazumasa Ohno (2025)
"Effects of Planetary Parameters on Disequilibrium Chemistry in Irradiated Planetary Atmospheres: From Gas Giants to Sub-Neptune", ApJ, 985, 209
[ADS]

[26] Sagnick Mukherjee, Everett, Schlawin, Taylor J. Bell, Jonathan J. Fortney, Thomas G. Beatty, et al.  (incl. K. Ohno) (2025)
"A JWST Panchromatic Thermal Emission Spectrum of the Warm Neptune Archetype GJ 436b", ApJ, 982, 39
[ADS]

[25] Elspeth K.H. Lee and  Kazumasa Ohno (2025)
"Three-dimensional dynamical evolution of cloud particle microphysics in sub-stellar atmospheres. I. Description and exploring Y-dwarf atmospheric variability",  A&A, 695, 111
[ADS]

[24] V. A. Boehm, N. Lewis, C. E. Fairman, S. E. Moran, C. Gascon, et al.  (incl. K. Ohno) (2025)
"The HUSTLE Program: The UV to Near-Infrared HST WFC3/UVIS G280 Transmission Spectrum of WASP-127b"", AJ, 169, 23
[ADS]

[23] Z. Huang, X. Yu, S. Tsai, J. Moses, K. Ohno, J. Krissansen-Totton, X. Zhang, & J. J. Fortney (2024)
"Probing Cold-to-temperate Exoplanetary Atmospheres: The Role of Water Condensation on Surface Identification with JWST", ApJ, 975, 146
[ADS]

[22] Everett, Schlawin, Kazumasa Ohno, Taylor J. Bell, Murphy M. Matthew, Luis Welbanks et al. (2024)
"Possible Carbon Dioxide Above the Thick Aerosols of GJ 1214 b", ApJL, 974, 33
[ADS]

[21] Kento Masuda, Jessica E. Libby-Roberts, John H. Livingston, Kevin Stevenson,  Peter Gao et al.  (incl. Kazumasa Ohno) (2024)
"A Fourth Planet in the Kepler-51 System Revealed by Transit Timing Variation",  ApJ, in press
[ADS]

[20] Jingxuan Yang, Mark Hammond, Anjali  A. A. Piette, et al.  (incl. Kazumasa Ohno) (2024)
"Simultaneous retrieval of orbital phase resolved JWST/MIRI emission spectra of the hot Jupiter WASP-43b: evidence of water, ammonia and carbon monoxide", MNRAS, 532, 460
[ADS]

[19] Everett, Schlawin, Sagnick Mukherjee, Kazumasa Ohno, Taylor Bell, Thomas G. Beatty et al. (2024)
"Multiple Clues for Dayside Aerosols and Temperature Gradients in WASP-69b from a Pacnchromatic JWST Emission Spectra", AJ, 168, 104
[ADS]

[18] Peter Gao and Kazumasa Ohno (2024)
"Clouds and Hazes in Pluto and Triton", in press for a book chapter of "Triton and Pluto: the Long-Lost Twins of Active Worlds"

[17] Thomas G. Beatty, Luis Welbanks, Everett Schlawin, Taylor J. Bell, Michael R. Line et al.  (incl. Kazumasa Ohno) (2024)
"Sulfur Dioxide and Other Molecular Species in the Atmosphere of the Sub-Neptune GJ3470b", ApJL, 970, 10s
[ADS]

[16] Luis Welbanks, Taylor J. Bell, Thomas G. Beatty, Michael R. Line,  Kazumasa Ohno, et al. (2024)
"A High Internal Heat Flux and Large Core in a Warm Neptune Exoplanet", Nature, 630, 836
[ADS]

[15] Bell, J. T., Wellbanks, L., Schlawin, E., Line, R. M., Fortney, J. J., et al. (incl. Ohno, K.) (2023)
“Methane Throughout the Atmosphere of the Warm Exoplanet WASP-80b”, Nature, 623, 709
[ADS] [Press Release]

[14] Harada, K. C.,  Dressing, D. C., Alam, K. M., Kirk, J., Lopez-Morales, M., et al. (incl. Ohno, K.) (2023)
“Stability and Detectability of Exomoons Orbiting HIP41378 f, a Temperate Jovian Planet with an Anomalously Low Apparent Density”, AJ, 166, 208
[ADS]

[13] Coulombe, L., Benneke, B., Challener, R., Piette, A. A., Wiser, S. L., et al. (incl. Ohno, K.) (2023)
“A broadband thermal emission spectrum of the ultra-hot Jupiter WASP-18b”, Nature, 620, 7973
[ADS]

[12] Tsai, S., Lee, K. H., Powell, D., Gao, P., Zhang, X., et al. (incl. Ohno, K.) (2023)
“Photochemically-produced SO2 in the atmosphere of WASP-39b”, Nature, 617, 483
[ADS] [Press Release from UCSC]

[11] Feinstein, A., Radica, M., Welbanks, L., Murray, C., Ohno, K., et al. (2023)
“JWST Early Release Science: Exoplanet transit spectroscopy with NIRISS-SOSS”, Nature, 614, 670
[ADS] [Press Release from UCSC]

[10] Alderson, L., Wakeford, R. H., Alam, K. M., Batalha, E. N., Lothringer, D. J., et al. (incl. Ohno, K.) (2023)
“JWST Early Release Science: WASP-39b transit spectroscopy with NIRSpec G395H”, Nature, 614, 664
[ADS] [Press Release from UCSC]

[9] Rustamkulov, Z., Sing, K. D., Mukherjee, S., May, M. E., Kirk, J., et al. (incl. Ohno, K.) (2023)
“The Broadband Transmission Spectrum of WASP-39b from JWST NIRSpec PRISM Observations”, Nature, 614, 659
[ADS] [Press Release from UCSC]

[8] Ahrer, E., Stevenson, B. K., Mansfield, M., Moran, E. S., Brande, J., et al. (incl. Ohno, K.) (2023)
“JWST Early Release Science: Exoplanet transit spectroscopy with NIRCam”, Nature, 614, 653
[ADS] [Press Release from UCSC]

[7] The JWST Transiting Exoplanet Community Early Release Science Team, et al. (incl. Ohno, K.) (2023)
“Identification of carbon dioxide in an exoplanet atmosphere”, Nature, 614, 649
[ADS] [Press Release from UCSC]

[6] Notsu, S., Ohno, K., Ueda, T., Walsh, C., Eistrup, C. & Nomura, H. (2022)
“The Molecular Composition of Shadowed Protosolar Disk Midplanes beyond the Water Snowline”, ApJ, 936, 188
[ADS]

[5] Dymont, A (co-advisor)., Yu, X., Ohno, K., Zhang, X., Fortney J. J., Thorngren, D., & Dickinson, C. (2022)
“Cleaning our Hazy Lens: Statistical Trends in Transmission Spectra of Warm Exoplanets”, ApJ, 937, 2
[ADS]

[4] Alam K. M., Kirk J., Dressing D. C., Lopez-Morales, M., Ohno, K., et al. (2022)
"The First Near-Infrared Transmission Spectrum of HIP 41378 f, a Low-Mass Temperate Jovian World in a Multi-Planet System", ApJL, 927, 5
[ADS] [AAS Nova Research Highlights]

[3] Okuya, A., Okuzumi, S, Ohno, K., & Hirano, T. (2020)
“Constraining the Bulk Composition of Disintegrating Exoplanets Using Combined Transmission Spectra from JWST and SPICA”, ApJ 901, 171
[ADS] [Press Release from Tokyo Tech]

[2] Sota Arakawa & Kazumasa Ohno (2020)
“Thermal inertias of pebble-pile comet 67P/Churyumov-Gerasimenko”, MNRAS 497, 1166
[ADS]

[1] Ch. Helling, N. Iro, L. Corrales, D. Samra, K. Ohno, et al. (2019)
“Understanding the atmospheric properties and chemical composition of the ultra-hot Jupiter HAT-P-7b I. Cloud and chemistry mapping”, A&A, 631, 79
[ADS]

[2] Hashimoto, J., Ohno, K.(Co-I), Nugroho, S., Ishikawa, H., Konishi, M., & Hosokawa, K.
“Calibration of Chemical Characterization in Planet Atmosphere with self-luminous T/Y Dwarf Binaries”,
Subaru Telescope Semester S23B, S23B0106N (1.5 nights) 

[1] Wakeford, H., Alderson, L., Batalha, N., Grant, D., Lewis, N., Lopez-Morales, M., MacDonald, R., Marley, M., Moran S. E., Ohno, K. (Co-I)
“Hubble Ultraviolet-optical Survey of Transiting Legacy Exoplanets treasury (HUSTLE) program”,
HST Cycle 30, GO-17183 (122 orbits)