Search for Nearby, Small-sized Transiting Exoplanets and Study of Their Atmospheres

• Project/Area Number: 17H04574
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 海外学術
• Research Field: Astronomy
• Research Institution: The University of Tokyo (2018-2021); National Astronomical Observatory of Japan (2017)
• Principal Investigator: Fukui Akihiko 東京大学, 大学院総合文化研究科, 特任助教 (60632049)
• Project Period (FY): 2017-04-01 – 2021-03-31
• Project Status: Completed (Fiscal Year 2021)
• Budget Amount: ¥16,250,000 (Direct Cost: ¥12,500,000、Indirect Cost: ¥3,750,000); Fiscal Year 2020: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000); Fiscal Year 2019: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000); Fiscal Year 2018: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000); Fiscal Year 2017: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
• Keywords: 太陽系外惑星 / トランジット惑星 / TESS / 系外惑星大気 / ヘイズ / 光赤外線天文学 / トランジット / 惑星大気 / 天文学

Outline of Final Research Achievements

We conducted observations of more than 300 exoplanetary candidates, which were discovered by the NASA's TESS space telescope, with the four-band simultaneous imager MuSCAT2 mounted on the 1.5m telescope in the Canary Islands, Spain. As a result, we validated more than 20 new planetary systems in the visitnity of our Solar system, which are suitable for future atmospheric characterizations. In addition, we conducted atmospheric observations of exoplanets with MuSCAT2, finding hints of aerosols in the atmospheres of two giant planets. On the other hand, in particular for atmospheric observations of planets around low-mass stars, it turned out to be critical to understand and remove the effect of stellar activities, leaving a future work.

Academic Significance and Societal Importance of the Research Achievements

本研究により、これまで数が限られていた太陽系近傍の小型トランジット惑星の発見数を格段に増やすことができた。これにより、次世代の大型望遠鏡を用いた小型惑星の大気観測が大きく進展し、惑星の表層環境やハビタビリティ（生命居住可能性）の理解が進むことが期待される。新たな系外惑星の発見やその環境推定は社会的な関心も高く、本研究で得られた研究成果について行なった3件のプレスリリースについては、いずれもネットメディアに取り上げられた。また、本研究により、惑星大気におけるエアロゾルの影響の重要性が再確認された。

Research Products

• [Int'l Joint Research] Instituto de Astrofisica de Canarias(スペイン)
• [Int'l Joint Research] Instituto de Astrofisica de Canarias(スペイン)
• [Int'l Joint Research] Instituto de Astrofisica de Canarias(スペイン)
• [Int'l Joint Research] カナリア天体物理学研究所(スペイン)
• [Journal Article] HATS-74Ab, HATS-75b, HATS-76b, and HATS-77b: Four Transiting Giant Planets Around K and M Dwarfs* (2022)
  • Author(s): Jordan A et al.
  • Journal Title: The Astronomical Journal Volume: 163 Issue: 3 Pages: 125-125
  • DOI: 10.3847/1538-3881/ac4a77
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] A 38 Million Year Old Neptune-sized Planet in the Kepler Field (2022)
  • Author(s): Bouma L. G. et al. (including Fukui A.)
  • Journal Title: The Astronomical Journal Volume: 163 Issue: 3 Pages: 121-121
  • DOI: 10.3847/1538-3881/ac4966
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Discovery and mass measurement of the hot transiting Earth-sized planet GJ 3929 b (2022)
  • Author(s): Kemmer J. et al. (including Fukui A.)
  • Journal Title: Astronomy and Astrophysics Volume: 659 Pages: A17-A17
  • DOI: 10.1051/0004-6361/202142653
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Validation of 13 Hot and Potentially Terrestrial TESS Planets (2022)
  • Author(s): Giacalone S et al.
  • Journal Title: The Astronomical Journal Volume: 163 Issue: 2 Pages: 99-99
  • DOI: 10.3847/1538-3881/ac4334
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] TOI-530b: a giant planet transiting an M-dwarf detected by <i>TESS</i> (2021)
  • Author(s): Gan T et al.
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 511 Issue: 1 Pages: 83-99
  • DOI: 10.1093/mnras/stab3708
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] TOI-2285b: A 1.7 Earth-radius planet near the habitable zone around a nearby M dwarf (2021)
  • Author(s): Fukui A et al.
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 74 Issue: 1 Pages: L1-L8
  • DOI: 10.1093/pasj/psab106
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Is the orbit of the exoplanet WASP-43b really decaying? <i>TESS</i> and MuSCAT2 observations confirm no detection (2021)
  • Author(s): Garai Z et al.
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 508 Issue: 4 Pages: 5514-5523
  • DOI: 10.1093/mnras/stab2929
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] TOI-1431b/MASCARA-5b: A Highly Irradiated Ultrahot Jupiter Orbiting One of the Hottest and Brightest Known Exoplanet Host Stars (2021)
  • Author(s): Addison B. C. et al. (including Fukui A.)
  • Journal Title: The Astronomical Journal Volume: 162 Issue: 6 Pages: 292-292
  • DOI: 10.3847/1538-3881/ac224e
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] TOI-2109: An Ultrahot Gas Giant on a 16 hr Orbit (2021)
  • Author(s): Wong, I., Shporer, A., Zhou, G., Kitzmann, D., Komacek, T. D., Tan, X., ..., Ikoma, Masahiro et al.
  • Journal Title: The Astronomical Journal Volume: 162 Issue: 6 Pages: 256-256
  • DOI: 10.3847/1538-3881/ac26bd
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] 37 new validated planets in overlapping <i>K2</i> campaigns (2021)
  • Author(s): de Leon J P et al.
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 508 Issue: 1 Pages: 195-218
  • DOI: 10.1093/mnras/stab2305
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] TESS-Keck Survey. V. Twin Sub-Neptunes Transiting the Nearby G Star HD 63935 (2021)
  • Author(s): Scarsdale N. et al. (including Fukui A.)
  • Journal Title: The Astronomical Journal Volume: 162 Issue: 5 Pages: 215-215
  • DOI: 10.3847/1538-3881/ac18cb
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] TOI-1749: an M dwarf with a Trio of Planets including a Near-resonant Pair (2021)
  • Author(s): Fukui A et al.
  • Journal Title: The Astronomical Journal Volume: 162 Issue: 4 Pages: 167-167
  • DOI: 10.3847/1538-3881/ac13a5
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Two Bright M Dwarfs Hosting Ultra-Short-Period Super-Earths with Earth-like Compositions* (2021)
  • Author(s): Hirano T et al.
  • Journal Title: The Astronomical Journal Volume: 162 Issue: 4 Pages: 161-161
  • DOI: 10.3847/1538-3881/ac0fdc
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Wavelength Dependence of Activity-induced Photometric Variations for Young Cool Stars in Hyades (2021)
  • Author(s): Miyakawa K. et al. (including Fukui A.)
  • Journal Title: The Astronomical Journal Volume: 162 Issue: 3 Pages: 104-104
  • DOI: 10.3847/1538-3881/ac111d
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] TOI-1634 b: An Ultra-short-period Keystone Planet Sitting inside the M-dwarf Radius Valley (2021)
  • Author(s): Cloutier R. et al. (including Fukui A.)
  • Journal Title: The Astronomical Journal Volume: 162 Issue: 2 Pages: 79-79
  • DOI: 10.3847/1538-3881/ac0157
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] TOI-2076 and TOI-1807: Two Young Comoving Planetary Systems within 50 pc Identified by TESS that are Ideal Candidates for Further Follow Up (2021)
  • Author(s): Hedges C. et al. (including Fukui A.)
  • Journal Title: The Astronomical Journal Volume: 162 Issue: 2 Pages: 54-54
  • DOI: 10.3847/1538-3881/ac06cd
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Simultaneous photometric and CARMENES spectroscopic monitoring of fast-rotating M dwarf GJ 3270. Discovery of a post-flare corotating feature (2021)
  • Author(s): Johnson E. N. et al. (including Fukui A.)
  • Journal Title: Astronomy and Astrophysics Volume: 651 Pages: A105-A105
  • DOI: 10.1051/0004-6361/202040159
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] A transit timing variation observed for the long-period extremely low-density exoplanet HIP 41378 f (2021)
  • Author(s): Bryant E. M. et al. (including Fukui A.)
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 504 Issue: 1 Pages: L45-L50
  • DOI: 10.1093/mnrasl/slab037
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Joint Analysis of Multicolor Photometry: A New Approach to Constrain the Nature of Multiple-star Systems Hosting Exoplanet Candidates (2021)
  • Author(s): Miyakawa K. et al. (including Fukui A.)
  • Journal Title: The Astronomical Journal Volume: 161 Issue: 6 Pages: 276-276
  • DOI: 10.3847/1538-3881/abf500
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] An ultra-short-period transiting super-Earth orbiting the M3 dwarf TOI-1685 (2021)
  • Author(s): Bluhm P. et al. (including Fukui A.)
  • Journal Title: Astronomy and Astrophysics Volume: 650 Pages: A78-A78
  • DOI: 10.1051/0004-6361/202140688
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] A nearby transiting rocky exoplanet that is suitable for atmospheric investigation (2021)
  • Author(s): Trifonov T.、Caballero J. A.、Morales J. C.、Seifahrt A.、Ribas I. et al.
  • Journal Title: Science Volume: 371 Issue: 6533 Pages: 1038-1041
  • DOI: 10.1126/science.abd7645
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] The TESS-Keck Survey. II. An Ultra-short-period Rocky Planet and Its Siblings Transiting the Galactic Thick-disk Star TOI-561 (2021)
  • Author(s): Weiss Lauren M.、Dai Fei、Huber Daniel、Brewer John M.、Collins Karen A. et al.
  • Journal Title: The Astronomical Journal Volume: 161 Issue: 2 Pages: 56-56
  • DOI: 10.3847/1538-3881/abd409
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] An enhanced slope in the transmission spectrum of the hot Jupiter WASP-104b (2020)
  • Author(s): Chen G、Pall? E、Parviainen H、Wang H、van?Boekel R、Murgas F、et al.
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 500 Issue: 4 Pages: 5420-5435
  • DOI: 10.1093/mnras/staa3555
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] TOI-519 b: A short-period substellar object around an M dwarf validated using multicolour photometry and phase curve analysis (2020)
  • Author(s): Parviainen H.、Palle E.、Zapatero-Osorio M. R.、Nowak G.、Fukui A.、et al.
  • Journal Title: Astronomy & Astrophysics Volume: 645 Pages: A16-A16
  • DOI: 10.1051/0004-6361/202038934
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] The CARMENES search for exoplanets around M dwarfs (2020)
  • Author(s): Dreizler S.、Crossfield I. J. M.、Kossakowski D.、Plavchan P.、Jeffers S. V.、et al.
  • Journal Title: Astronomy & Astrophysics Volume: 644 Pages: A127-A127
  • DOI: 10.1051/0004-6361/202038016
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] K2-280 b - a low density warm sub-Saturn around a mildly evolved star (2020)
  • Author(s): Nowak Grzegorz、Palle Enric、Gandolfi Davide、Deeg Hans J、Hirano Teruyuki、et al.
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 497 Issue: 4 Pages: 4423-4435
  • DOI: 10.1093/mnras/staa2077
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Discovery of a hot, transiting, Earth-sized planet and a second temperate, non-transiting planet around the M4 dwarf GJ 3473 (TOI-488) (2020)
  • Author(s): Kemmer J.、Stock S.、Kossakowski D.、Kaminski A.、Molaverdikhani K.、Schlecker M.、Caballero J. A.、Amado P. J.、Astudillo-Defru N.、Bonfils X.、Ciardi D.、Collins K. A.、Espinoza N.、Fukui A.、Hirano T.、et al.
  • Journal Title: Astronomy & Astrophysics Volume: 642 Pages: A236-A236
  • DOI: 10.1051/0004-6361/202038967
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] The CARMENES search for exoplanets around M dwarfs (2020)
  • Author(s): Nowak G.、Luque R.、Parviainen H.、...、Hirano T.、et al.
  • Journal Title: Astronomy & Astrophysics Volume: 642 Pages: A173-A173
  • DOI: 10.1051/0004-6361/202037867
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Obliquity measurement and atmospheric characterisation of the WASP-74 planetary system (2020)
  • Author(s): Luque R.、Casasayas-Barris N.、Parviainen H.、Chen G.、Pall? E.、Livingston J.、et al.
  • Journal Title: Astronomy & Astrophysics Volume: 642 Pages: A50-A50
  • DOI: 10.1051/0004-6361/202038703
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] A giant planet candidate transiting a white dwarf (2020)
  • Author(s): Vanderburg Andrew、Rappaport Saul A.、Xu Siyi、Crossfield Ian J. M.、Becker Juliette C. et al.
  • Journal Title: Nature Volume: 585 Issue: 7825 Pages: 363-367
  • DOI: 10.1038/s41586-020-2713-y
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Simulations Predicting the Ability of Multi-color Simultaneous Photometry to Distinguish TESS Candidate Exoplanets from False Positives (2020)
  • Author(s): Louie Dana R.、Narita Norio、Fukui Akihiko、Palle Enric、Tamura Motohide、Kusakabe Nobuhiko、Parviainen Hannu、Deming Drake
  • Journal Title: Publications of the Astronomical Society of the Pacific Volume: 132 Issue: 1014 Pages: 084403-084403
  • DOI: 10.1088/1538-3873/ab9c8c
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Atmospheric characterization of the ultra-hot Jupiter MASCARA-2b/KELT-20b. Detection of Ca II Fe II Na I and the Balmer series of H (Hホア Hホイ and Hホウ) with high-dispersion transit spectroscopy (Corrigendum) (2020)
  • Author(s): Casasayas-Barris N. et al. (including Fukui A.)
  • Journal Title: Astronomy and Astrophysics Volume: 640 Pages: C6-C6
  • DOI: 10.1051/0004-6361/201935623e
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] TOI-503: The First Known Brown-dwarf Am-star Binary from the TESS Mission (2020)
  • Author(s): Subjak Jan、Sharma Rishikesh、Carmichael Theron W.、...、Hirano T.、et al.
  • Journal Title: The Astronomical Journal Volume: 159 Issue: 4 Pages: 151-151
  • DOI: 10.3847/1538-3881/ab7245
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] The Continuing Search for Evidence of Tidal Orbital Decay of Hot Jupiters (2020)
  • Author(s): Patra Kishore C.、Winn Joshua N.、Holman Matthew J.、Gillon Michael、Burdanov Artem、Jehin Emmanuel、Delrez Laetitia、Pozuelos Francisco J.、Barkaoui Khalid、Benkhaldoun Zouhair、Narita Norio、Fukui Akihiko、Kusakabe Nobuhiko、Kawauchi Kiyoe、Terada Yuka、Bouma L. G.、Weinberg Nevin N.、Broome Madelyn
  • Journal Title: The Astronomical Journal Volume: 159 Issue: 4 Pages: 150-150
  • DOI: 10.3847/1538-3881/ab7374
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] MuSCAT2 multicolour validation of TESS candidates: an ultra-short-period substellar object around an M dwarf (2020)
  • Author(s): Parviainen, H.; Palle, E.; Zapatero-Osorio, M. R.ほか（40名中22番目）
  • Journal Title: Astronomy & Astrophysics Volume: 633 Pages: A28-A28
  • DOI: 10.1051/0004-6361/201935958
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Evidence for Spin-Orbit Alignment in the TRAPPIST-1 System (2020)
  • Author(s): Hirano Teruyuki、Gaidos Eric、Winn Joshua N.、et al.
  • Journal Title: The Astrophysical Journal Volume: 890 Issue: 2 Pages: L27-L27
  • DOI: 10.3847/2041-8213/ab74dc
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] It Takes Two Planets in Resonance to Tango around K2-146 (2020)
  • Author(s): Lam Kristine W. F.、Korth Judith、Masuda Kento、Csizmadia Szilard、Eigmuller Philipp、Stefansson Gumundur Kari、Endl Michael、Albrecht Simon、Robertson Paul、Luque Rafael、Livingston John H.、Hirano Teruyuki、et al.
  • Journal Title: The Astronomical Journal Volume: 159 Issue: 3 Pages: 120-120
  • DOI: 10.3847/1538-3881/ab66c9
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] K2-295 b and K2-237 b: Two Transiting Hot Jupiters (2019)
  • Author(s): Smith A. M. S. et al. (including Fukui A.)
  • Journal Title: Acta Astronomica Volume: 69 Pages: 135-158
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Qatar Exoplanet Survey: Qatar-8b, 9b, and 10b - A Hot Saturn and Two Hot Jupiters (2019)
  • Author(s): Alsubai, Khalid; Tsvetanov, Zlatan I.; Pyrzas, Stylianosほか（29名中23番目）
  • Journal Title: The Astronomical Journal Volume: 157 Issue: 6 Pages: 224-224
  • DOI: 10.3847/1538-3881/ab19bc
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Shallow Ultraviolet Transits of WD 1145+017 (2019)
  • Author(s): Xu S. et al. (including Fukui A.)
  • Journal Title: The Astronomical Journal Volume: 157 Issue: 6 Pages: 255-255
  • DOI: 10.3847/1538-3881/ab1b36
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] The CARMENES search for exoplanets around M dwarfs. Two temperate Earth-mass planet candidates around Teegarden's Star (2019)
  • Author(s): Zechmeister M. et al. (including Fukui A.)
  • Journal Title: Astronomy and Astrophysics Volume: 627 Pages: A49-A49
  • DOI: 10.1051/0004-6361/201935460
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Atmospheric characterization of the ultra-hot Jupiter MASCARA-2b/KELT-20b. Detection of CaII FeII NaI and the Balmer series of H (H_alpha H_beta and H_gamma) with high-dispersion transit spectroscopy (2019)
  • Author(s): Casasayas-Barris N. et al. (including Fukui A.)
  • Journal Title: Astronomy and Astrophysics Volume: 628 Pages: A9-A9
  • DOI: 10.1051/0004-6361/201935623
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Greening of the brown-dwarf desert. EPIC 212036875b: a 51 MJ object in a 5-day orbit around an F7 V star (2019)
  • Author(s): Persson Carina M.、Csizmadia Szilard、Mustill Alexander J.、Fridlund Malcolm、Hatzes Artie P.、Nowak Grzegorz、Georgieva Iskra、Gandolfi Davide、Davies Melvyn B.、Livingston John H.、Palle Enric、Montanes Rodriguez Pilar、Endl Michael、Hirano Teruyuki、et al.
  • Journal Title: Astronomy & Astrophysics Volume: 628 Pages: A64-A64
  • DOI: 10.1051/0004-6361/201935505
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Multicolour photometry for exoplanet candidate validation (2019)
  • Author(s): Parviainen H.、Tingley B.、Deeg H. J.、Palle E.、Alonso R.、Montanes Rodriguez P.、Murgas F.、Narita N.、Fukui A.、Watanabe N.、Kusakabe N.、Tamura M.、Nishiumi T.、Prieto-Arranz J.、Klagyivik P.、Bejar V. J. S.、Crouzet N.、Mori M.、Hidalgo Soto D.、Casasayas Barris N.、Luque R.
  • Journal Title: Astronomy & Astrophysics Volume: 630 Pages: A89-A89
  • DOI: 10.1051/0004-6361/201935709
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Kojima-1Lb Is a Mildly Cold Neptune around the Brightest Microlensing Host Star (2019)
  • Author(s): Fukui A.、Suzuki D.、Koshimoto N.、Bachelet E.、Vanmunster T.、Storey D.、Maehara H.、Yanagisawa K.、Yamada T.、Yonehara A.、Hirano T.、et al.
  • Journal Title: The Astronomical Journal Volume: 158 Issue: 5 Pages: 206-206
  • DOI: 10.3847/1538-3881/ab487f
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Radial velocity confirmation of K2-100b: a young, highly irradiated, and low-density transiting hot Neptune (2019)
  • Author(s): Barragan, O.; Aigrain, S.; Kubyshkina, D.ほか（40名中40番目）
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 490 Issue: 1 Pages: 698-708
  • DOI: 10.1093/mnras/stz2569
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Qatar Exoplanet Survey: Qatar-7b?A Very Hot Jupiter Orbiting a Metal-rich F-Star (2019)
  • Author(s): Alsubai Khalid、Tsvetanov Zlatan I.、Latham David W. （21名中21番目）
  • Journal Title: The Astronomical Journal Volume: 157 Issue: 2 Pages: 74-74
  • DOI: 10.3847/1538-3881/aaf80a
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Detection and Doppler monitoring of K2-285 (EPIC 246471491), a system of four transiting planets smaller than Neptune (2019)
  • Author(s): Palle E.、Nowak G.、Luque R.、Hidalgo D.、Barragan O.、Prieto-Arranz J.、Hirano T.、Fridlund M.、Gandolfi D.、Livingston J.、et al.
  • Journal Title: Astronomy & Astrophysics Volume: 623 Pages: A41-A41
  • DOI: 10.1051/0004-6361/201834001
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Detection and characterization of an ultra-dense sub-Neptunian planet orbiting the Sun-like star K2-292 (2019)
  • Author(s): Luque R.、Nowak G.、Palle E.、Dai F.、Kaminski A.、Nagel E.、Hidalgo D.、Bauer F.、Lafarga M.、Livingston J.、et al.
  • Journal Title: Astronomy & Astrophysics Volume: 623 Pages: A114-A114
  • DOI: 10.1051/0004-6361/201834952
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] HD 219666 b: a hot-Neptune from TESS Sector 1 (2019)
  • Author(s): Esposito M.、Armstrong D. J.、Gandolfi D.、Adibekyan V.、Fridlund M.、Santos N. C.、Livingston J. H.、Delgado Mena E.、Fossati L.、Lillo-Box J.、et al.
  • Journal Title: Astronomy & Astrophysics Volume: 623 Pages: A165-A165
  • DOI: 10.1051/0004-6361/201834853
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] K2-141 b (2018)
  • Author(s): Barragan O.、Gandolfi D.、Dai F.、Livingston J.、Persson C. M.、Hirano T.、Narita N.、Csizmadia Sz.、Winn J. N.、Nespral D.、Prieto-Arranz J.、et al.
  • Journal Title: Astronomy & Astrophysics Volume: 612 Pages: A95-A95
  • DOI: 10.1051/0004-6361/201732217
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] 44 Validated Planets from K2 Campaign 10 (2018)
  • Author(s): Livingston John H.、Endl Michael、Dai Fei、Cochran William D.、Barragan Oscar、Gandolfi Davide、Hirano Teruyuki、Grziwa Sascha、Smith Alexis M. S.、Albrecht Simon、et al.
  • Journal Title: The Astronomical Journal Volume: 156 Issue: 2 Pages: 78-78
  • DOI: 10.3847/1538-3881/aaccde
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Super-Earth of 8 M_Earth in a 2.2-day orbit around the K5V star K2-216 (2018)
  • Author(s): Persson C. M.、Fridlund M.、Barragan O.、Dai F.、Gandolfi D.、Hatzes A. P.、Hirano T.、Grziwa S.、Korth J.、Prieto-Arranz J.、et al.
  • Journal Title: Astronomy & Astrophysics Volume: 618 Pages: A33-A33
  • DOI: 10.1051/0004-6361/201832867
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Mass determination of the 1:3:5 near-resonant planets transiting GJ 9827 (K2-135) (2018)
  • Author(s): Prieto-Arranz J.、Palle E.、Gandolfi D.、Barragan O.、Guenther E. W.、Dai F.、Fridlund M.、Hirano T.、Livingston J.、Luque R.、et al.
  • Journal Title: Astronomy & Astrophysics Volume: 618 Pages: A116-A116
  • DOI: 10.1051/0004-6361/201832872
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] The KELT Follow-up Network and Transit False-positive Catalog: Pre-vetted False Positives for TESS (2018)
  • Author(s): Collins, K. A., Collins, K. I., Pepper, J. et al. (他108名)
  • Journal Title: The Astronomical Journal Volume: 156 Issue: 5 Pages: 234-234
  • DOI: 10.3847/1538-3881/aae582
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] K2-260 b: a hot Jupiter transiting an F star, and K2-261 b: a warm Saturn around a bright G star (2018)
  • Author(s): Johnson M. C.、Dai F.、Justesen A. B.、Gandolfi D.、Hatzes A. P.、Nowak G.、Endl M.、Cochran W. D.、Hidalgo D.、Watanabe N.、Parviainen H.、Hirano T.、et al.
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 481 Issue: 1 Pages: 596-612
  • DOI: 10.1093/mnras/sty2238
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] MuSCAT2: four-color simultaneous camera for the 1.52-m Telescopio Carlos S?nchez (2018)
  • Author(s): Narita Norio、Fukui Akihiko、Kusakabe Nobuhiko、Watanabe Noriharu、Palle Enric、Parviainen Hannu、Monta??s-Rodr?guez Pilar、Murgas Felipe、Monelli Matteo、Aguiar Marta、Perez Prieto Jorge Andres
  • Journal Title: Journal of Astronomical Telescopes, Instruments, and Systems Volume: 5 Issue: 01 Pages: 1-1
  • DOI: 10.1117/1.jatis.5.1.015001
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] K2-264: a transiting multiplanet system in the Praesepe open cluster (2018)
  • Author(s): Livingston John H、Dai Fei、Hirano Teruyuki、Gandolfi Davide、Trani Alessandro A、Nowak Grzegorz、Cochran William D、Endl Michael、Albrecht Simon、Barragan Oscar、et al.
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 484 Issue: 1 Pages: 8-18
  • DOI: 10.1093/mnras/sty3464
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] K2-137 b: an Earth-sized planet in a 4.3-h orbit around an M-dwarf (2018)
  • Author(s): Smith, A. M. S., Cabrera, J., Csizmadia, Sz, Dai, F., Gandolfi, D., Hirano, T., Winn, J. N., Albrecht, S., Alonso, R., Antoniciello, G., et al.
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 474 Issue: 4 Pages: 5523-5533
  • DOI: 10.1093/mnras/stx2891
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Exoplanets around Low-mass Stars Unveiled by K2 (2018)
  • Author(s): Hirano, T., Dai, F., Gandolfi, D., Fukui, A., Livingston, J. H., Miyakawa, K., Endl, M., Cochran, W. D., Alonso-Floriano, F. J., Kuzuhara, M., et al.
  • Journal Title: The Astronomical Journal Volume: 155 Issue: 3 Pages: 127-127
  • DOI: 10.3847/1538-3881/aaa9c1
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] K2-155: A Bright Metal-poor M Dwarf with Three Transiting Super-Earths (2018)
  • Author(s): Hirano, T., Dai, F., Livingston, J. H., Fujii, Y., Cochran, W. D., Endl, M., Gandolfi, D., Redfield, S., Winn, J. N., Guenther, E. W., et al.
  • Journal Title: The Astronomical Journal Volume: 155 Issue: 3 Pages: 124-124
  • DOI: 10.3847/1538-3881/aaaa6e
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Three Small Planets Transiting a Hyades Star (2018)
  • Author(s): Livingston, J. H., Dai, F., Hirano, T., Gandolfi, D., Nowak, G., Endl, M., Velasco, S., Fukui, A., Narita, N., Prieto-Arranz, J., et al.
  • Journal Title: The Astronomical Journal Volume: 155 Issue: 3 Pages: 115-115
  • DOI: 10.3847/1538-3881/aaa841
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] The Discovery and Mass Measurement of a New Ultra-short-period Planet: K2-131b (2017)
  • Author(s): Dai, F., Winn, J. N., Gandolfi, D., Wang, S. X., Teske, J. K., Burt, J., Albrecht, S., Barragan, O., Cochran, W. D., Endl, M., et al.
  • Journal Title: The Astronomical Journal Volume: 154 Issue: 6 Pages: 226-226
  • DOI: 10.3847/1538-3881/aa9065
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] A giant planet undergoing extreme-ultraviolet irradiation by its hot massive-star host (2017)
  • Author(s): Gaudi B. Scott, Stassun Keivan G., Collins Karen A., et al. (including Fukui A.)
  • Journal Title: Nature Volume: 546 Issue: 7659 Pages: 514-518
  • DOI: 10.1038/nature22392
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Multi-color simultaneous photometry of the T-Tauri star with planetary candidate, CVSO 30 (2017)
  • Author(s): Masahiro Onitsuka, Akihiko Fukui, Norio Narita, Teruyuki Hirano, Nobuhiko Kusakabe, Tsuguru Ryu, Motohide Tamura
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 69 Issue: 2 Pages: 106-106
  • DOI: 10.1093/pasj/psx004
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] The K2-ESPRINT project. VI. K2-105 b, a hot Neptune around a metal-rich G-dwarf (2017)
  • Author(s): Norio Narita, Teruyuki Hirano, Akihiko Fukui, Yasunori Hori, Fei Dai, Liang Yu, John Livingston, Tsuguru Ryu, Grzegorz Nowak, Masayuki Kuzuhara, Bun'ei Sato, Yoichi Takeda, Simon Albrecht, et al.
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 69 Issue: 2 Pages: 29-29
  • DOI: 10.1093/pasj/psx002
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Presentation] MuSCATシリーズとすばる望遠鏡IRDインテンシブ観測によるTESSトランジット惑星候補のフォローアップ観測II (2022)
  • Author(s): 成田憲保
  • Organizer: 日本天文学会2022年春季年会
• [Presentation] 明るいM型星をまわる低日射の小型トランジット惑星TOI-2285bの発見 (2022)
  • Author(s): 福井暁彦
  • Organizer: 日本天文学会2022年春季年会
• [Presentation] MuSCATシリーズとすばる望遠鏡IRDインテンシブ観測によるTESSトランジット惑星候補のフォローアップ観測 (2021)
  • Author(s): 成田憲保
  • Organizer: 日本天文学会2021年春季年会
• [Presentation] M3型星まわりのサブネプチューンTOI1696.01の発見確認 (2021)
  • Author(s): 森万由子
  • Organizer: 日本天文学会2021年秋季年会
• [Presentation] Development of multiband imager MuSCAT3 and its first results on followup observations of TESS transiting planets (2021)
  • Author(s): Akihiko Fukui
  • Organizer: JpGU 2021
  • Int'l Joint Research
• [Presentation] 2:1周期比ペアを含む3つの惑星がトランジットするM型星の発見 (2021)
  • Author(s): 福井暁彦
  • Organizer: 日本天文学会2021年秋季年会
• [Presentation] 周期比が2に極めて近い惑星ペアがトランジットするM型星の発見 (2021)
  • Author(s): 福井暁彦
  • Organizer: 日本惑星科学会2021年秋季講演会
• [Presentation] Capability of the MuSCAT network for Monitoring TTVs of the TRAPPIST-1 Planets (2019)
  • Author(s): Akihiko Fukui
  • Organizer: TRAPPIST-1 conference
  • Int'l Joint Research
• [Presentation] Status and Operation of Multi-Band Imagers for Transiting Exoplanets MuSCAT1 and 2 (2019)
  • Author(s): Akihiko Fukui
  • Organizer: TESS Science Conference I
  • Int'l Joint Research
• [Presentation] MuSCAT 1 to 3 for a global multi-color transit photometry network (2019)
  • Author(s): Norio Narita
  • Organizer: Planet2/RESCEU Symposium 2019 / Planetary Atmosphere and Habitability
  • Int'l Joint Research
• [Presentation] TESS and MuSCATs observations of exoplanets (2019)
  • Author(s): Akihiko Fukui
  • Organizer: 20th Symposium on Planetary Science 2019
  • Int'l Joint Research / Invited
• [Presentation] MuSCATの現状と将来計画 (2019)
  • Author(s): 福井暁彦
  • Organizer: 188cm望遠鏡ワークショップ
• [Presentation] Multiband Photometry of K2 Transiting Planets with MuSCAT and MuSCAT2 (2018)
  • Author(s): Akihiko Fukui
  • Organizer: Kepler/K2 Science Conference IV
  • Int'l Joint Research
• [Presentation] Challenge in Atmospheric Observations of M-dwarf Planets in Optical Wavelengths (2018)
  • Author(s): Akihiko Fukui
  • Organizer: DTA SYMPOSIUM VIII: Challenge to Super-Earths and Their Atmospheres
  • Int'l Joint Research / Invited
• [Presentation] Detections and Characterizations of Super-Earths in the TESS era with Japanese New Instruments (2018)
  • Author(s): Norio Narita
  • Organizer: DTA SYMPOSIUM VIII: Challenge to Super-Earths and Their Atmospheres
  • Int'l Joint Research / Invited
• [Presentation] 多波長測光データの解析によるトランジット偽検出シナリオの制限 (2018)
  • Author(s): 宮川浩平
  • Organizer: 日本天文学会2018年春季年会
• [Presentation] MuSCAT and MuSCAT2 for Detection and Characterization of Transiting Exoplanets (2017)
  • Author(s): Norio Narita
  • Organizer: Transiting Exoplanets
  • Int'l Joint Research
• [Presentation] Scientific Results Obtained with OAO188cm/MuSCAT (2017)
  • Author(s): Akihiko Fukui
  • Organizer: 10th Workshop on Astronomy with Precise Radial Velocity Measurements
  • Int'l Joint Research
• [Presentation] Development of OAO/MuSCAT and TCS/MuSCAT2 for multi-band transit photometry (2017)
  • Author(s): Norio Narita
  • Organizer: 10th Workshop on Astronomy with Precise Radial Velocity Measurements
  • Int'l Joint Research
• [Presentation] Multi-color transit photometry for K2 planetary candidates (2017)
  • Author(s): Kohei Miyakawa
  • Organizer: 10th Workshop on Astronomy with Precise Radial Velocity Measurements
  • Int'l Joint Research
• [Presentation] Transit Photometry of Earth-sized Planets with MuSCAT (2017)
  • Author(s): Akihiko Fukui
  • Organizer: 10th RESCEU/Planet2 Symposium: Planet Formation around Snowline
  • Int'l Joint Research
• [Presentation] Development of MuSCAT2 and Prospects for Future Transit Observations (2017)
  • Author(s): Norio Narita
  • Organizer: 10th RESCEU/Planet2 Symposium: Planet Formation around Snowline
  • Int'l Joint Research
• [Presentation] K2ミッションで検出された小型惑星候補の地上追観測 (2017)
  • Author(s): 平野照幸
  • Organizer: 日本天文学会2017年秋季年会
• [Presentation] 新しい4色同時撮像カメラMuSCAT2の開発 (2017)
  • Author(s): 成田憲保
  • Organizer: 日本天文学会2017年秋季年会
• [Presentation] 岡山188cm望遠鏡/MuSCATを用いた多色トランジット観測の成果と展望 (2017)
  • Author(s): 福井暁彦
  • Organizer: 日本惑星科学会2017年秋季講演会
• [Presentation] 新しい4色同時撮像カメラMuSCAT2の開発と今後の小型低質量系外惑星探索の展望 (2017)
  • Author(s): 成田憲保
  • Organizer: 日本惑星科学会2017年秋季講演会