Basic Information

Faculty

• Faculty of Science

Email Address

• Email Address

  kawashima.yui.8vkyoto-u.ac.jp

Academic Degree

• 24 Mar. 2015

  東京大学修士（理学）
• 22 Mar. 2018

  東京大学博士（理学）

Academic Resume (Undergraduate School/Majors)

• 東京大学, 理学部地球惑星物理学科, 卒業

Research History

• From Oct. 2024, To Present

  Kyoto University, Assistant Professor
• From Apr. 2024, To Sep. 2024

  Tohoku University, Graduate School of Science Department of Geophysics, Assistant Professor
• From Apr. 2024, To Sep. 2024

  Tohoku University, Frontier Research Institute for Interdisciplinary Sciences Creative Interdisciplinary Research Division, Assistant Professor

ID,URL

• ORCID ID

  0000-0003-3800-7518

• J-Global ID

  202301016971145724

researchmap URL

• https://researchmap.jp/yui_kawashima

Research

Research Interests

• 太陽系外惑星

Papers

• Probing Two-dimensional Asymmetries of an Exoplanet Atmosphere from Chromatic Transit Variation

  Shotaro Tada; Hajime Kawahara; Yui Kawashima; Takayuki Kotani; Kento Masuda

  The Astronomical Journal, 09 Apr. 2025

  
• First comparative exoplanetology within a transiting multi-planet system: Comparing the atmospheres of V1298 Tau b and c

  Saugata Barat; Jean-Michel Desert; Jayesh M. Goyal; Allona Vazan; Yui Kawashima; Jonathan J. Fortney; Jacob L. Bean; Michael R. Line; Vatsal Panwar; Bob Jacobs; Hinna Shivkumar; James Sikora; Robin Baeyens; Antonija Oklopcic; Trevor J. David; John H. Livingston

  ASTRONOMY & ASTROPHYSICS, 13 Dec. 2024

  
• A Fourth Planet in the Kepler-51 System Revealed by Transit Timing Variations

  Kento Masuda; Jessica E. Libby-Roberts; John H. Livingston; Kevin B. Stevenson; Peter Gao; Shreyas Vissapragada; Guangwei Fu; Te Han; Michael Greklek-McKeon; Suvrath Mahadevan; Eric Agol; Aaron Bello-Arufe; Zachory Berta-Thompson; Caleb I. Canas; Yayaati Chachan; Leslie Hebb; Renyu Hu; Yui Kawashima; Heather A. Knutson; Caroline V. Morley; Catriona A. Murray; Kazumasa Ohno; Armen Tokadjian; Xi Zhang; Luis Welbanks; Matthew C. Nixon; Richard Freedman; Norio Narita; Akihiko Fukui; Jerome P. de Leon; Mayuko Mori; Enric Palle; Felipe Murgas; Hannu Parviainen; Emma Esparza-Borges; Daniel Jontof-Hutter; Karen A. Collins; Paul Benni; Khalid Barkaoui; Francisco J. Pozuelos; Michael Gillon; Emmanuel Jehin; Zouhair Benkhaldoun; Suzanne Hawley; Andrea S. J. Lin; Gudmundur Stefansson; Allyson Bieryla; Mesut Yilmaz; Hakan Volkan Senavci; Eric Girardin; Giuseppe Marino; Gavin Wang

  ASTRONOMICAL JOURNAL, 01 Dec. 2024

  
• JASMINE: Near-infrared astrometry and time-series photometry science

  Daisuke Kawata; Hajime Kawahara; Naoteru Gouda; Nathan J. Secrest; Ryouhei Kano; Hirokazu Kataza; Naoki Isobe; Ryou Ohsawa; Fumihiko Usui; Yoshiyuki Yamada; Alister W. Graham; Alex R. Pettitt; Hideki Asada; Junichi Baba; Kenji Bekki; Bryan N. Dorland; Michiko Fujii; Akihiko Fukui; Kohei Hattori; Teruyuki Hirano; Takafumi Kamizuka; Shingo Kashima; Norita Kawanaka; Yui Kawashima; Sergei A. Klioner; Takanori Kodama; Naoki Koshimoto; Takayuki Kotani; Masayuki Kuzuhara; Stephen E. Levine; Steven R. Majewski; Kento Masuda; Noriyuki Matsunaga; Kohei Miyakawa; Makoko Miyoshi; Kumiko Morihana; Ryoichi Nishi; Yuta Notsu; Masashi Omiya; Jason Sanders; Ataru Tanikawa; Masahiro Tsujimoto; Taihei Yano; Masataka Aizawa; Ko Arimatsu; Michael Biermann; Celine Boehm; Masashi Chiba; Victor P. Debattista; Ortwin Gerhard; Masayuki Hirabayashi; David Hobbs; Bungo Ikenoue; Hideyuki Izumiura; Carme Jordi; Naoki Kohara; Wolfgang Loeffler; Xavier Luri; Ichiro Mase; Andrea Miglio; Kazuhisa Mitsuda; Trent Newswander; Shogo Nishiyama; Yoshiyuki Obuchi; Takafumi Ootsubo; Masami Ouchi; Masanobu Ozaki; Michael Perryman; Timo Prusti; Pau Ramos; Justin Read; R. Michael Rich; Ralph Schonrich; Minori Shikauchi; Risa Shimizu; Yoshinori Suematsu; Shotaro Tada; Aoi Takahashi; Takayuki Tatekawa; Daisuke Tatsumi; Takuji Tsujimoto; Toshihiro Tsuzuki; Seitaro Urakawa; Fumihiro Uraguchi; Shin Utsunomiya; Vincent Van Eylen; Floor van Leeuwen; Takehiko Wada; Nicholas A. Walton

  PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 10 Apr. 2024

  
• A Spectroscopic Thermometer: Individual Vibrational Band Spectroscopy with the Example of OH in the Atmosphere of WASP-33b

  Sam O. M. Wright; Stevanus K. K. Nugroho; Matteo Brogi; Neale P. P. Gibson; Ernst J. W. de Mooij; Ingo Waldmann; Jonathan Tennyson; Hajime Kawahara; Masayuki Kuzuhara; Teruyuki Hirano; Takayuki Kotani; Yui Kawashima; Kento Masuda; Jayne L. L. Birkby; Chris a. A. Watson; Motohide Tamura; Konstanze Zwintz; Hiroki Harakawa; Tomoyuki Kudo; Klaus Hodapp; Shane Jacobson; Mihoko Konishi; Takashi Kurokawa; Jun Nishikawa; Masashi Omiya; Takuma Serizawa; Akitoshi Ueda; Sebastien Vievard; Sergei N. N. Yurchenko

  ASTRONOMICAL JOURNAL, 01 Aug. 2023

  
• Tentative Evidence for Water Vapor in the Atmosphere of the Neptune-sized Exoplanet HD 106315c

  Laura Kreidberg; Paul Molliere; Ian J. M. Crossfield; Daniel P. Thorngren; Yui Kawashima; Caroline Morley; Bjorn Benneke; Thomas Mikal-Evans; David Berardo; Molly R. Kosiarek; Varoujan Gorjian; David R. Ciardi; Jessie L. Christiansen; Diana Dragomir; Courtney D. Dressing; Jonathan J. Fortney; Benjamin J. Fulton; Thomas P. Greene; Kevin K. Hardegree-Ullman; Andrew W. Howard; Steve B. Howell; Howard Isaacson; Jessica E. Krick; John H. Livingston; Joshua D. Lothringer; Farisa Y. Morales; Erik A. Petigura; Joseph E. Rodriguez; Joshua E. Schlieder; Lauren M. Weiss

  ASTRONOMICAL JOURNAL, 01 Oct. 2022

  
• Investigation of the upper atmosphere in ultra-hot Jupiter WASP-76 b with high-resolution spectroscopy

  Kiyoe Kawauchi; Norio Narita; Bun'ei Sato; Yui Kawashima

  PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 04 Apr. 2022

  
• Autodifferentiable Spectrum Model for High-dispersion Characterization of Exoplanets and Brown Dwarfs

  Hajime Kawahara; Yui Kawashima; Kento Masuda; Ian J. M. Crossfield; Erwan Pannier; Dirk van den Bekerom

  ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 01 Feb. 2022

  
• Implementation of disequilibrium chemistry to spectral retrieval code ARCiS and application to 16 exoplanet transmission spectra Indication of disequilibrium chemistry for HD 209458b and WASP-39b

  Yui Kawashima; Michiel Min

  ASTRONOMY & ASTROPHYSICS, 07 Dec. 2021

  
• Neutral Metals in the Atmosphere of HD 149026b

  Masato Ishizuka; Hajime Kawahara; Stevanus K. Nugroho; Yui Kawashima; Teruyuki Hirano; Motohide Tamura

  ASTRONOMICAL JOURNAL, Apr. 2021

  
• First Detection of Hydroxyl Radical Emission from an Exoplanet Atmosphere: High-dispersion Characterization of WASP-33b Using Subaru/IRD

  Stevanus K. Nugroho; Hajime Kawahara; Neale P. Gibson; Ernst J. W. de Mooij; Teruyuki Hirano; Takayuki Kotani; Yui Kawashima; Kento Masuda; Matteo Brogi; Jayne L. Birkby; Chris A. Watson; Motohide Tamura; Konstanze Zwintz; Hiroki Harakawa; Tomoyuki Kudo; Masayuki Kuzuhara; Klaus Hodapp; Masato Ishizuka; Shane Jacobson; Mihoko Konishi; Takashi Kurokawa; Jun Nishikawa; Masashi Omiya; Takuma Serizawa; Akitoshi Ueda; Sebastien Vievard

  ASTROPHYSICAL JOURNAL LETTERS, Mar. 2021

  
• Obliquity measurement and atmospheric characterisation of the WASP-74 planetary system

  R. Luque; N. Casasayas-Barris; H. Parviainen; G. Chen; E. Palle; J. Livingston; V. J. S. Bejar; N. Crouzet; E. Esparza-Borges; A. Fukui; D. Hidalgo; Y. Kawashima; K. Kawauchi; P. Klagyivik; S. Kurita; N. Kusakabe; J. P. de Leon; A. Madrigal-Aguado; P. Montanes-Rodriguez; M. Mori; F. Murgas; N. Narita; T. Nishiumi; G. Nowak; M. Oshagh; M. Sanchez-Benavente; M. Stangret; M. Tamura; Y. Terada; N. Watanabe

  ASTRONOMY & ASTROPHYSICS, 02 Oct. 2020

  
• The ARCiS framework for exoplanet atmospheres Modelling philosophy and retrieval

  Michiel Min; Chris W. Ormel; Katy Chubb; Christiane Helling; Yui Kawashima

  ASTRONOMY & ASTROPHYSICS, 01 Oct. 2020

  
• Mineral cloud and hydrocarbon haze particles in the atmosphere of the hot Jupiter JWST target WASP-43b

  Ch. Helling; Y. Kawashima; V. Graham; D. Samra; K. L. Chubb; M. Min; L. B. F. M. Waters; V. Parmentier

  ASTRONOMY & ASTROPHYSICS, 29 Sep. 2020

  
• Aluminium oxide in the atmosphere of hot Jupiter WASP-43b

  Katy L. Chubb; Michiel Min; Yui Kawashima; Christiane Helling; Ingo Waldmann

  ASTRONOMY & ASTROPHYSICS, 01 Jul. 2020

  
• Super-Rayleigh Slopes in Transmission Spectra of Exoplanets Generated by Photochemical Haze

  Kazumasa Ohno; Yui Kawashima

  ASTROPHYSICAL JOURNAL LETTERS, Jun. 2020

  
• Theoretical Transmission Spectra of Exoplanet Atmospheres with Hydrocarbon Haze: Effect of Creation, Growth, and Settling of Haze Particles. II. Dependence on UV Irradiation Intensity, Metallicity, C/O Ratio, Eddy Diffusion Coefficient, and Temperature

  Yui Kawashima; Masahiro Ikoma

  ASTROPHYSICAL JOURNAL, 01 Jun. 2019

  
• Detectable Molecular Features above Hydrocarbon Haze via Transmission Spectroscopy with JWST: Case Studies of GJ 1214b-, GJ 436b-, HD 97658b-, and Kepler-51b-like Planets

  Yui Kawashima; Renyu Hu; Masahiro Ikoma

  ASTROPHYSICAL JOURNAL LETTERS, 01 May 2019

  
• Theoretical Reflectance Spectra of Earth-like Planets through Their Evolutions: Impact of Clouds on the Detectability of Oxygen, Water, and Methane with Future Direct Imaging Missions

  Yui Kawashima; Sarah Rugheimer

  ASTRONOMICAL JOURNAL, May 2019

  
• Earth's atmosphere's lowest layers probed during a lunar eclipse

  Kiyoe Kawauchi; Norio Narita; Bun'ei Sato; Teruyuki Hirano; Yui Kawashima; Taishi Nakamoto; Takuya Yamashita; Motohide Tamura

  PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, Oct. 2018

  
• Theoretical Transmission Spectra of Exoplanet Atmospheres with Hydrocarbon Haze: Effect of Creation, Growth, and Settling of Haze Particles. I. Model Description and First Results

  Yui Kawashima; Masahiro Ikoma

  ASTROPHYSICAL JOURNAL, 20 Jan. 2018

  
• DEMONSTRATING HIGH-PRECISION, MULTIBAND TRANSIT PHOTOMETRY WITH MUSCAT: A CASE FOR HAT-P-14B

  Akihiko Fukui; Norio Narita; Yui Kawashima; Nobuhiko Kusakabe; Masahiro Onitsuka; Tsuguru Ryu; Masahiro Ikoma; Kenshi Yanagisawa; Hideyuki Izumiura

  ASTROPHYSICAL JOURNAL, 01 Mar. 2016

  
• An eclipsing double-line spectroscopic binary at the stellar/substellar boundary in the Upper Scorpius OB association

  N. Lodieu; R. Alonso; J. I. Gonzalez Hernandez; R. Sanchis-Ojeda; N. Narita; Y. Kawashima; K. Kawauchi; A. Suarez Mascareno; H. Deeg; J. Prieto Arranz; R. Rebolo; E. Palle; V. J. S. Bejar; A. Ferragamo; J. A. Rubino-Martin

  ASTRONOMY & ASTROPHYSICS, Dec. 2015

  
• THEORETICAL EMISSION SPECTRA OF ATMOSPHERES OF HOT ROCKY SUPER-EARTHS

  Yuichi Ito; Masahiro Ikoma; Hajime Kawahara; Hiroko Nagahara; Yui Kawashima; Taishi Nakamoto

  ASTROPHYSICAL JOURNAL, 10 Mar. 2015

  
• MULTI-BAND, MULTI-EPOCH OBSERVATIONS OF THE TRANSITING WARM JUPITER WASP-80b

  Akihiko Fukui; Yui Kawashima; Masahiro Ikoma; Norio Narita; Masahiro Onitsuka; Yoshifusa Ita; Hiroki Onozato; Shogo Nishiyama; Haruka Baba; Tsuguru Ryu; Teruyuki Hirano; Yasunori Hori; Kenji Kurosaki; Kiyoe Kawauchi; Yasuhiro H. Takahashi; Takahiro Nagayama; Motohide Tamura; Nobuyuki Kawai; Daisuke Kuroda; Shogo Nagayama; Kouji Ohta; Yasuhiro Shimizu; Kenshi Yanagisawa; Michitoshi Yoshida; Hideyuki Izumiura

  ASTROPHYSICAL JOURNAL, 01 Aug. 2014

  
• MULTI-COLOR TRANSIT PHOTOMETRY OF GJ 1214b THROUGH BJHK_s BANDS AND A LONG-TERM MONITORING OF THE STELLAR VARIABILITY OF GJ 1214

  Norio Narita; Akihiko Fukui; Masahiro Ikoma; Yasunori Hori; Kenji Kurosaki; Yui Kawashima; Takahiro Nagayama; Masahiro Onitsuka; Amnart Sukom; Yasushi Nakajima; Motohide Tamura; Daisuke Kuroda; Kenshi Yanagisawa; Teruyuki Hirano; Kiyoe Kawauchi; Masayuki Kuzuhara; Hiroshi Ohnuki; Takuya Suenaga; Yasuhiro H. Takahashi; Hideyuki Izumiura; Nobuyuki Kawai; Michitoshi Yoshida

  ASTROPHYSICAL JOURNAL, 20 Aug. 2013

  

Presentations

• 可視・赤外分光観測で探る系外惑星の大気

  川島由依

  第30回天体スペクトル研究会, 01 Mar. 2025, Invited

  
• Characterizing the Atmospheres of Exoplanets and Brown Dwarfs

  川島由依

  Cool Stars Workshop in Japan, 14 Feb. 2025, Invited

  
• Exoplanet Science with TMT

  Y. Kawashima

  Subaru Users Meeting FY 2024, 30 Jan. 2025, Invited

  
• 巨大惑星・褐色矮星の下層大気

  川島由依

  系外惑星大気Workshop 2024, 19 Nov. 2024, Invited

  
• Observability of CO worlds

  川島由依

  2nd CO world Plenary Meeting, 31 Jul. 2024

  
• ExoJAXを用いた褐色矮星大気の高分散スペクトル解析

  川島由依; 河原創; 笠木結; 石川裕之; 増田賢人; 小谷隆行; 工藤智幸; 平野照幸; 葛原昌幸; Stevanus Nugroho; John Livingston; 田村元秀; IRDチーム

  天文学における自動微分と逆問題研究会, 29 Jul. 2024

  
• Exoplanet Science

  川島由依

  TMT-ACCESS 2024, 11 Jun. 2024, Invited

  
• Detectability of the coolest Y-type brown dwarfs by a next-generation infrared satellite

  Y. Kawashima; S. Miyazaki; H. Kawahara

  Japan Geoscience Union Meeting 2024, 28 May 2024

  
• Subaru/IRD high-resolution spectroscopy of a T-type brown dwarf and investigation of its atmospheric properties with high-resolution spectrum model ExoJAX

  Y. Kawashima; H. Kawahara; Y. Kasagi; H. Ishikawa; K. Masuda; T. Kotani; T. Kudo; T. Hirano; M. Kuzuhara; S. Nugroho; J. Livingston; M. Tamura; IRD team

  Subaru Users Meeting FY2023, 23 Jan. 2024

  

Awards

• 24 Mar. 2015

  東京大学大学院理学系研究科研究奨励賞（修士）（東京大学）

External funds: Kakenhi

• 惑星大気を模した高温水素ガス下での分子線実測に基づく系外惑星大気探査

  Grant-in-Aid for Scientific Research (B)

  Basic Section 16010:Astronomy-related

  National Institutes of Natural Sciences

  小谷 隆行

  From 01 Apr. 2023, To 31 Mar. 2026, Granted

  太陽系外惑星;高分散分光;ガスセル

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23K25920/
• 理論班：惑星CO環境のモデリング

  Grant-in-Aid for Transformative Research Areas (A)

  Transformative Research Areas, Section (II)

  Institute of Science Tokyo

  尾崎 和海

  From 16 Jun. 2022, To 31 Mar. 2027, Granted

  一酸化炭素;大気化学;物質循環;分光学;バイオシグネチャー;大気光化学;系外惑星;地球;火星

  https://kaken.nii.ac.jp/grant/KAKENHI-PLANNED-22H05150/
• 原始惑星系円盤の化学・物理進化計算と系外惑星大気の観測から探る惑星形成過程

  Grant-in-Aid for Early-Career Scientists

  Basic Section 17010:Space and planetary sciences-related

  Japan Aerospace EXploration Agency;Institute of Physical and Chemical Research

  川島 由依

  From 01 Apr. 2021, To 31 Mar. 2025, Granted

  系外惑星;褐色矮星;大気組成;惑星形成;原始惑星系円盤

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21K13984/
• Mapping Habitable Planetary Environments with Exoplanet Imaging

  Grant-in-Aid for Scientific Research (S)

  Broad Section B

  National Astronomical Observatory of Japan

  Guyon Olivier

  From 05 Jul. 2021, To 31 Mar. 2026, Granted

  Astronomy;Exoplanet;Exoplanets;Telescope;Adaptive Optics;Interferometry;Photonic;Optical Fiber;Spectroscopy;Coronagraphy;Telescopes;adaptive optics;wavefront control;exoplanet;photonics;interferometry;spectroscopy

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21H04998/
• 褐色矮星の系統的な高分散スペクトル解析から確立する系外惑星大気の特徴付け

  Grant-in-Aid for Early-Career Scientists

  Basic Section 16010:Astronomy-related

  Kyoto University

  川島 由依

  From 01 Apr. 2025, To 31 Mar. 2028, Granted

  褐色矮星;系外惑星;大気;高分散分光

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-25K17429/

Education

Teaching subject(s)

• From 01 Apr. 2025, To 31 Mar. 2026

  Introduction to General Astronomy

  N516, Spring, Institute for Liberal Arts and Sciences, 2
• From 01 Apr. 2025, To 31 Mar. 2026

  Introduction to General Astronomy

  N516, Fall, Institute for Liberal Arts and Sciences, 2
• From 01 Apr. 2025, To 31 Mar. 2026

  Seminar on Theoretical Astrophysics D

  4029, Fall, Graduate School of Science, 1
• From 01 Apr. 2025, To 31 Mar. 2026

  Seminar on Theoretical Astrophysics C

  4028, Spring, Graduate School of Science, 1
• From 01 Apr. 2025, To 31 Mar. 2026

  Seminar on Theoretical Astrophysics B

  4027, Fall, Graduate School of Science, 1
• From 01 Apr. 2025, To 31 Mar. 2026

  Seminar on Theoretical Astrophysics A

  4026, Spring, Graduate School of Science, 1
• From 01 Apr. 2025, To 31 Mar. 2026

  Special study course II(Physical Science) S5

  5254, Year-long, Faculty of Science, 12
• From 01 Apr. 2025, To 31 Mar. 2026

  Planetary Astrophysics

  4316, Fall, Faculty of Science, 2

Administration

Faculty management (title, position)

• From 01 Apr. 2025, To 31 Mar. 2026

  理学研究科　図書・出版委員会委員