JN
Jun Nishikawa
astro-ph.EPastro-ph.SRastro-ph.IMastro-ph.GAastro-phastro-ph.HEphysics.atom-ph
On Valency
published · living versionsW_mrfa3eqq·v1 · currentpublished
Recovery of the Candidate Protoplanet HD 100546 b with Gemini/NICI and Detection of Additional (Planet-Induced?) Disk Structure at Small Separations
with Thayne Currie, Takayuki Muto, Tomoyuki Kudo, Mitsuhiko Honda +21
1 version
Preprints & journals
53 papers in the corpus · 2006–2026Near-infrared spectra of chemically peculiar stars and applications to kilonova spectra2609.30835v1 · Nanae Domoto, Masaomi Tanaka, Wako Aoki 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
Revealing {\alpha}-Element's Past with Subaru/IRD: Oxygen Abundance of 35 Very Metal-Poor Stars from Near-IR OH lines2606.18862v2 · Bakuh Danang Setyo Budi, Wako Aoki, Nicholas Storm et al.2026 · 0 citationsarXiv
Japan's Possible Contributions for Coronagraph of the Habitable Worlds Observatory (HWO)2606.13440v1 · Keigo Enya, Kenta Yoneta, Naoshi Murakami 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
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
Direct Imaging Explorations for Companions from the Subaru/IRD Strategic Program II; Discovery of a Brown-dwarf Companion around a Nearby mid-M~dwarf LSPM~J1446+46332509.13587v1 · Taichi Uyama, Masayuki Kuzuhara, Charles Beichman et al.2025 · 0 citationsarXiv
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
Elemental abundances of 44 very metal-poor stars determined from Subaru/IRD near-infrared spectra2503.11487v1 · Wako Aoki, Timothy C. Beers, Satoshi Honda et al.2025 · 3 citationsarXiv
Gliese 12 b: A temperate Earth-sized planet at 12 pc ideal for atmospheric transmission spectroscopy2405.14708v1 · M. Kuzuhara, A. Fukui, J. H. Livingston et al.2024 · 22 citationsPublished on 2024 May 23 by Astrophysical Journal Letters (ApJL) 967 L21
The Discovery and Follow-up of Four Transiting Short-period Sub-Neptunes Orbiting M dwarfs2405.12637v1 · Y. Hori, A. Fukui, T. Hirano et al.2024 · 5 citationsarXiv
Transit Spectroscopy of K2-33b with Subaru/IRD: Spin-Orbit Alignment and Tentative Atmospheric Helium2404.07262v1 · Teruyuki Hirano, Eric Gaidos, Hiroki Harakawa et al.2024 · 15 citationsarXiv
Cerium features in kilonova near-infrared spectra: implication from a chemically peculiar star2306.04697v1 · Masaomi Tanaka, Nanae Domoto, Wako Aoki et al.2023 · 14 citationsarXiv
A spectroscopic thermometer: individual vibrational band spectroscopy with the example of OH in the atmosphere of WASP-33b2305.11071v1 · Sam O.M. Wright, Stevanus K. Nugroho, Matteo Brogi et al.2023 · 16 citationsarXiv
The mass determination of TOI-519 b: a close-in giant planet transiting a metal-rich mid-M dwarf2304.14703v2 · Taiki Kagetani, Norio Narita, Tadahiro Kimura et al.2023 · 25 citationsarXiv
Direct imaging and astrometric detection of a gas giant planet orbiting an accelerating star.37053312 · Currie, Thayne, Brandt, G Mirek, Brandt, Timothy D et al.2023 · 79 citationsScience (New York, N.Y.). 2023;380(6641):198-203
Direct Imaging Explorations for Companions around Mid-Late M Stars from the Subaru/IRD Strategic Program2302.13354v1 · Taichi Uyama, Charles Beichman, Masayuki Kuzuhara et al.2023 · 4 citationsarXiv
Absence of extended atmospheres in low-mass star radius-gap planets GJ 9827 b, GJ 9827 d and TOI-1235 b2302.01479v2 · Vigneshwaran Krishnamurthy, Teruyuki Hirano, Eric Gaidos et al.2023 · 13 citationsarXiv
An Earth-sized Planet around an M5 Dwarf Star at 22 pc2302.00699v1 · Teruyuki Hirano, Fei Dai, John H. Livingston et al.2023 · 9 citationsarXiv
Planet(esimal)s Around Stars with TESS (PAST) III: A Search for Triplet He I in the Atmospheres of Two 200 Myr-old Planets2211.02887v1 · Eric Gaidos, Teruyuki Hirano, Rena A. Lee et al.2022 · 22 citationsarXiv
Direct Imaging Discovery and Dynamical Mass of a Substellar Companion Orbiting an Accelerating Hyades Sun-like Star with SCExAO/CHARIS2205.02729v2 · Masayuki Kuzuhara (ABC/NAOJ), Thayne Currie, Takuya Takarada (ABC/NAOJ) et al.2022 · 69 citationsarXiv
Coronagraph Experiment on Dark-hole Control by Speckle Area Nulling Method2204.09834v1 · Masahito Oya, Jun Nishikawa, Masaaki Horie et al.2022 · 7 citationsOptical Review 22 (2015) 736-740
The coherent differential imaging on speckle area nulling (CDI-SAN) method for high-contrast imaging under speckle variation2204.10002v1 · Jun Nishikawa2022 · 3 citationsarXiv
TOI-1696: a nearby M4 dwarf with a planet in the Neptunian desert2203.02694v1 · Mayuko Mori, John H. Livingston, Jerome de Leon et al.2022 · 18 citationsarXiv
Validation and atmospheric exploration of the sub-Neptune TOI-2136b around a nearby M3 dwarf2202.10182v2 · K. Kawauchi, F. Murgas, E. Palle et al.2022 · 14 citationsA&A 666, A4 (2022)
Silicon and Strontium abundances of very metal-poor stars determined from near-infrared spectra2112.07433v1 · Wako Aoki, Timothy C. Beers, Satoshi Honda et al.2021 · 12 citationsarXiv
Elemental abundances of nearby M dwarfs based on high-resolution near-infrared spectra obtained by the Subaru/IRD survey: Proof of concept2112.00173v1 · Hiroyuki Tako Ishikawa, Wako Aoki, Teruyuki Hirano et al.2021 · 30 citationsarXiv
Zodiacal Exoplanets in Time (ZEIT) XIII: Planet Orbits and Atmospheres in the V1298 Tau System, a Keystone in Studies of Early Planetary Evolution2110.10689v1 · E. Gaidos, T. Hirano, C. Beichman et al.2021 · 25 citationsarXiv
TOI-2285b: A 1.7 Earth-radius Planet Near the Habitable Zone around a Nearby M Dwarf2110.10215v2 · Akihiko Fukui, Tadahiro Kimura, Teruyuki Hirano et al.2021 · 17 citationsarXiv
Zodiacal Exoplanets in Time (ZEIT) XII: A Directly-Imaged Planetary-Mass Companion to a Young Taurus M Dwarf Star2110.08655v1 · E. Gaidos, T. Hirano, A. L. Kraus et al.2021 · 9 citationsarXiv
SCExAO/CHARIS Direct Imaging of A Low-Mass Companion At A Saturn-Like Separation from an Accelerating Young A7 Star2109.12124v1 · Jeffrey Chilcote, Taylor Tobin, Thayne Currie et al.2021 · 8 citationsarXiv
Non-detection of Helium in the upper atmospheres of TRAPPIST-1b, e and f2106.11444v1 · Vigneshwaran Krishnamurthy, Teruyuki Hirano, Gu\dhmundur Stef'ansson et al.2021 · 28 citationsarXiv
Two Bright M Dwarfs Hosting Ultra-Short-Period Super-Earths with Earth-like Compositions2103.12760v2 · Teruyuki Hirano, John H. Livingston, Akihiko Fukui et al.2021 · 36 citationsarXiv
First Detection of Hydroxyl Radical Emission from an Exoplanet Atmosphere: High-dispersion Characterization of WASP-33b using Subaru/IRD2103.03094v1 · Stevanus K. Nugroho, Hajime Kawahara, Neale P. Gibson et al.2021 · 75 citationsarXiv
Zodiacal Exoplanets in Time. XI. The Orbit and Radiation Environment of the Young M Dwarf-Hosted Planet K2-25b2007.12701v1 · E. Gaidos, T. Hirano, D. J. Wilson et al.2020 · 30 citationsarXiv
Precision radial velocity measurements by the forward-modeling technique in the near-infrared2007.11013v2 · Teruyuki Hirano, Masayuki Kuzuhara, Takayuki Kotani et al.2020 · 63 citationsarXiv
Zodiacal Exoplanets in Time. X. The Orbit and Atmosphere of the Young "Neptune Desert"-Dwelling Planet K2-100b2003.12940v1 · E. Gaidos, T. Hirano, A. W. Mann et al.2020 · 43 citationsarXiv
Evidence for Spin-orbit Alignment in the TRAPPIST-1 System2002.05892v1 · Teruyuki Hirano, Eric Gaidos, Joshua N. Winn et al.2020 · 53 citationsarXiv
Stellar Imaging Coronagraph and Exoplanet Coronal Spectrometer: Two Additional Instruments for Exoplanet Exploration Onboard The WSO-UV 1.7 Meter Orbital Telescope1810.07644v1 · Alexander Tavrov, Shingo Kameda, Andrey Yudaev et al.2018 · 1 citationarXiv
The Subaru Coronagraphic Extreme Adaptive Optics system: enabling high-contrast imaging on solar-system scales1507.00017v1 · N. Jovanovic, F. Martinache, O. Guyon et al.2015 · 410 citationsPublications of the Astronomical Society of the Pacific, September 2015, 127, 890
Recovery of the Candidate Protoplanet HD 100546 b with Gemini/NICI and Detection of Additional (Planet-Induced?) Disk Structure at Small Separations1411.0315v1 · Thayne Currie, Takayuki Muto, Tomoyuki Kudo et al.2014 · 115 citationsarXivon Valency
Direct Imaging of a Cold Jovian Exoplanet in Orbit around the Sun-like Star GJ 5041307.2886v2 · M. Kuzuhara, M. Tamura, T. Kudo et al.2013 · 268 citationsAstrophysical Journal 774, 11, 2013
The SPICA coronagraphic instrument (SCI) for the study of exoplanets1108.3157v1 · K. Enya, T. Kotani, K. Haze et al.2011 · 34 citationsAdSR, 48, 323 (2011)
Common-path achromatic rotational-shearing coronagraph.21633419 · Tavrov, Alexander, Korablev, Oleg, Ksanfomaliti, Leonid et al.2011 · 13 citationsOptics letters. 2011;36(11):1972-4
Speckle level suppression using an unbalanced nulling interferometer in a high-contrast imaging system.21445131 · Yokochi, Kaito, Murakami, Naoshi, Nishikawa, Jun et al.2011 · 7 citationsOptics express. 2011;19(6):4957-69
Polarization interferometric nulling coronagraph for high-contrast imaging.20517351 · Murakami, Naoshi, Yokochi, Kaito, Nishikawa, Jun et al.2010 · 11 citationsApplied optics. 2010;49(16):D106-14
Polarimetric stellar interferometry by use of birefringent retarders.19844314 · Murakami, Naoshi, Ohishi, Naoko, Nishikawa, Jun et al.2010 · 1 citationApplied optics. 2009;48(30):5774-81
Achromatic deep nulling with a three-dimensional Sagnac interferometer.19571974 · Yokochi, Kaito, Tavrov, Alexander V, Nishikawa, Jun et al.2009 · 9 citationsOptics letters. 2009;34(13):1985-7
Achromatic interfero-coronagraph with two common-path interferometers in tandem.18806852 · Tavrov, Alexander V, Nishikawa, Jun, Tamura, Motohide et al.2008 · 11 citationsApplied optics. 2008;47(27):4915-26
An Eight-Octant Phase-Mask Coronagraph0809.1510v1 · N. Murakami, R. Uemura, N. Baba et al.2008 · 37 citationsarXiv
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