Masami Ouchi

21.2k citations

151 papers · 8.9k indexed · 8 hit papers · h-index 50

Impact in

Instrumentation top 0.1%
- Astronomy and Astrophysical Research
Astronomy and Astrophysics top 0.1%
- Galaxies: Formation, Evolution, Phenomena
- Astrophysics and Star Formation Studies
- Stellar, planetary, and galactic studies
- Gamma-ray bursts and supernovae
- Astrophysical Phenomena and Observations
- Radio Astronomy Observations and Technology

Papers in

Instrumentation 67
- Astronomy and Astrophysical Research 67
Astronomy and Astrophysics 144
- Galaxies: Formation, Evolution, Phenomena 137
- Astrophysics and Star Formation Studies 40
- Stellar, planetary, and galactic studies 31
- Gamma-ray bursts and supernovae 31
- Astrophysical Phenomena and Observations 30
- Radio Astronomy Observations and Technology 16

Co-authors: Kazuhiro Shimasaku Yoshiaki Ono Kimihiko Nakajima Yuichi Harikane Sadanori Okamura Nobunari Kashikawa Hisanori Furusawa Richard S. Ellis
Journals: The Astrophysical Journal (70 papers)Monthly Notices of the Royal Astronomical Society (27 papers)The Astrophysical Journal Supplement Series (12 papers)Publications of the Astronomical Society of Japan (10 papers)The Astronomical Journal (7 papers)
Partner nations: Japan United States United Kingdom

In The Last Decade

Masami Ouchi

143 papers receiving 8.4k citations

Hit Papers

8 papers align trajectories log scale

A Comprehensive Study of Galaxies at z ∼ 9–16 Found in the Early JWST Data: Ultraviolet Luminosity Functions and Cosmic Star Formation History at the Pre-reionization Epoch 2023 · 292 citations

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if any of the following hold:

it has ≥500 total citations;
it reaches ≥1.5× the top-1% citation threshold for papers in the same subfield and year (the threshold is the minimum needed to enter the top 1%, not the average within it);
it reaches the top citation threshold in at least one of its specific research topics.

2023 The Astrophysical Journal Supplement Series
2023 The Astrophysical Journal
2023 The Astrophysical Journal
2023 The Astrophysical Journal Supplement Series
2022 The Astrophysical Journal Supplement Series
2013 The Astrophysical Journal
2010 The Astrophysical Journal
2002 Publications of the Astronomical Society of Japan

Peers

Countries citing papers authored by Masami Ouchi

Since Specialization

Citations

This map shows the geographic impact of Masami Ouchi's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Masami Ouchi with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Masami Ouchi more than expected).

Fields of papers citing papers by Masami Ouchi

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Masami Ouchi. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Masami Ouchi. The network helps show where Masami Ouchi may publish in the future.

Co-authorship network

The 25 scholars most cited alongside Masami Ouchi, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.

Border = papers with Masami Ouchi Line = papers co-authored together Masami Ouchi links everyone, so they are left out of the graph.

All Works

Sort: Min cites: Since: Top N: Style:

20 of 20 papers shown

#	Work
1	SILVERRUSH. XIV. Lyα Luminosity Functions and Angular Correlation Functions from 20,000 Lyα Emitters at z ∼ 2.2–7.3 from up to 24 deg² HSC-SSP and CHORUS Surveys: Linking the Postreionization Epoch to the Heart of Reionization The Astrophysical Journal Supplement Series ·Hiroya Umeda, Masami Ouchi, Satoshi Kikuta, Yuichi Harikane, Yoshiaki Ono, Takatoshi Shibuya, Akio Inoue, Kazuhiro Shimasaku, Yongming Liang, 續晶子, Shun Saito, Haruka Kusakabe, 里栄子青木, ANN‐MARIE DOCK GUSTAVSSON	2025	8
2	Census of Lyα Emission from ∼600 Galaxies at z = 5–14: Evolution of the Lyα Luminosity Function and a Late Sharp Cosmic Reionization The Astrophysical Journal Supplement Series ·里栄子青木, Masami Ouchi, ANN‐MARIE DOCK GUSTAVSSON, Hiroya Umeda, Yuichi Harikane, Shintaro Yoshiura, Kimihiko Nakajima, Hidenobu Yajima, D R Sethna	2025	6
3	Fe Abundances of Early Galaxies at z = 9–12 Derived with Deep JWST Spectra The Astrophysical Journal ·ANN‐MARIE DOCK GUSTAVSSON, Masami Ouchi, Kimihiko Nakajima, Yoshiaki Ono, Yuichi Harikane, Yuki Isobe, K. Nomoto, Miho N. Ishigaki, Xiaodong Xia, Daichi Kashino, Nozomu Tominaga, Koh Takahashi, Subba Rao Polimera, 张晓保, 潘兆申	2025	2
4	Stellar- and AGN-driven Outflows in JWST Galaxies at z = 3–9: More Frequent, Wider Opening Angles, and Mostly Bounded The Astrophysical Journal ·Yi Xu, Masami Ouchi, Kimihiko Nakajima, Yuichi Harikane, Yuki Isobe, Yoshiaki Ono, Hiroya Umeda, Yechi Zhang	2025	5
5	Statistics for Galaxy Outflows at z ∼ 6–9 with Imaging and Spectroscopic Signatures Identified with JWST/NIRCam and NIRSpec Data The Astrophysical Journal ·Yechi Zhang, Masami Ouchi, Kimihiko Nakajima, Yuichi Harikane, Yuki Isobe, Yi Xu, Yoshiaki Ono, Hiroya Umeda	2024	9
6	Low [O/Fe] Ratio in a Luminous Galaxy at the Early Cosmic Epoch (z > 10): Signature of Short Delay Time or Bright Hypernovae/Pair-instability Supernovae? The Astrophysical Journal ·ANN‐MARIE DOCK GUSTAVSSON, Masami Ouchi, Kimihiko Nakajima, Yuichi Harikane, Nozomu Tominaga, Koh Takahashi, Daichi Kashino, Xiaodong Xia, 潘兆申, K. Nomoto, Yuki Isobe, Subba Rao Polimera, Miho N. Ishigaki, Yoshiaki Ono, 张晓保	2024	3
7	Dynamics of a Galaxy at z > 10 Explored by JWST Integral Field Spectroscopy: Hints of Rotating Disk Suggesting Weak Feedback The Astrophysical Journal ·Yi Xu, Masami Ouchi, Hidenobu Yajima, Hajime Fukushima, Yuichi Harikane, Yuki Isobe, Kimihiko Nakajima, ANN‐MARIE DOCK GUSTAVSSON, Yoshiaki Ono, Hiroya Umeda, Xiaodong Xia, Yechi Zhang	2024	7
8	EMPRESS. XIII. Chemical Enrichment of Young Galaxies Near and Far at z ∼ 0 and 4–10: Fe/O, Ar/O, S/O, and N/O Measurements with a Comparison of Chemical Evolution Models The Astrophysical Journal ·博彰伏見, Masami Ouchi, Kimihiko Nakajima, Yuki Isobe, Nozomu Tominaga, Akihiro Suzuki, Miho N. Ishigaki, K. Nomoto, Koh Takahashi, Yuichi Harikane, Marwa El Daly, Haruka Kusakabe, Takashi J. Moriya, Subba Rao Polimera, Yoshiaki Ono, Masato Onodera, Yuma Sugahara	2024	26
9	The MUSE eXtremely Deep Field: Detections of circumgalactic Si II* emission at z ≳ 2 Astronomy and Astrophysics ·Haruka Kusakabe, Valentin Mauerhofer, Anne Verhamme, Thibault Garel, J. Blaizot, L. Wisotzki, Johan Richard, Leindert Boogaard, Floriane Leclercq, Yucheng Guo, Adélaïde Claeyssens, T. Contini, E. C. Herenz, Josephine Kerutt, Michael V. Maseda, L. Michel-Dansac, Navendu Nai, Masami Ouchi, Ismael Pessa, Joop Schaye	2024	2
10	Strong He i Emission Lines in High N/O Galaxies at z ∼ 6 Identified in JWST Spectra: High He/H Abundance Ratios or High Electron Densities? The Astrophysical Journal ·Xiaodong Xia, Masami Ouchi, 潘兆申, Moritz Sommer, Kimihiko Nakajima, Hidenobu Yajima, Kentaro Nagamine, Koh Takahashi, ANN‐MARIE DOCK GUSTAVSSON, Nozomu Tominaga, Hiroya Umeda, Hajime Fukushima, Yuichi Harikane, Yuki Isobe, Yoshiaki Ono, Yi Xu, Yechi Zhang	2024	7
11	A Comprehensive Study of Galaxies at z ∼ 9–16 Found in the Early JWST Data: Ultraviolet Luminosity Functions and Cosmic Star Formation History at the Pre-reionization Epoch The Astrophysical Journal Supplement Series ·Yuichi Harikane, Masami Ouchi, Masamune Oguri, Yoshiaki Ono, Kimihiko Nakajima, Yuki Isobe, Hiroya Umeda, Ken Mawatari, Yechi Zhang Hit paper breakdown →	2023	292
12	Morphologies of Galaxies at z ≳ 9 Uncovered by JWST/NIRCam Imaging: Cosmic Size Evolution and an Identification of an Extremely Compact Bright Galaxy at z ∼ 12 The Astrophysical Journal ·Yoshiaki Ono, Yuichi Harikane, Masami Ouchi, Hidenobu Yajima, Brayan López Doria, Yuki Isobe, Takatoshi Shibuya, John Wise, Yechi Zhang, Kimihiko Nakajima, Hiroya Umeda	2023	37
13	JWST Census for the Mass–Metallicity Star Formation Relations at z = 4–10 with Self-consistent Flux Calibration and Proper Metallicity Calibrators The Astrophysical Journal Supplement Series ·Kimihiko Nakajima, Masami Ouchi, Yuki Isobe, Yuichi Harikane, Yechi Zhang, Yoshiaki Ono, Hiroya Umeda, Masamune Oguri Hit paper breakdown →	2023	111
14	SILVERRUSH. XIII. A Catalog of 20,567 Lyα Emitters at z = 2−7 Identified in the Full-depth Data of the Subaru/HSC-SSP and CHORUS Surveys The Astrophysical Journal Supplement Series ·Satoshi Kikuta, Masami Ouchi, Takatoshi Shibuya, Yongming Liang, Hiroya Umeda, 續晶子, Kazuhiro Shimasaku, Yuichi Harikane, Yoshiaki Ono, Akio Inoue, S. Yamanaka, Haruka Kusakabe, Rieko Momose, Nobunari Kashikawa, Yuichi Matsuda, Chien‐Hsiu Lee	2023	7
15	Redshift Evolution of Electron Density in the Interstellar Medium at z ∼ 0–9 Uncovered with JWST/NIRSpec Spectra and Line-spread Function Determinations The Astrophysical Journal ·Yuki Isobe, Masami Ouchi, Kimihiko Nakajima, Yuichi Harikane, Yoshiaki Ono, Yi Xu, Yechi Zhang, Hiroya Umeda	2023	53
16	EMPRESS. VII. Ionizing Spectrum Shapes of Extremely Metal-poor Galaxies: Uncovering the Origins of Strong He ii and the Impact on Cosmic Reionization The Astrophysical Journal ·Hiroya Umeda, Masami Ouchi, Kimihiko Nakajima, Yuki Isobe, Shohei Aoyama, Yuichi Harikane, Yoshiaki Ono, 續晶子	2022	22
17	First Identification of a CMB Lensing Signal Produced by 1.5 Million Galaxies at z∼4: Constraints on Matter Density Fluctuations at High Redshift Physical Review Letters ·Hironao Miyatake, Yuichi Harikane, Masami Ouchi, Yoshiaki Ono, 義明蒲原, Atsushi J. Nishizawa, Neta A. Bahcall, Satoshi Miyazaki, A. A. Plazas	2022	12
18	EMPRESS. V. Metallicity Diagnostics of Galaxies over 12 + log(O/H) ≃ 6.9–8.9 Established by a Local Galaxy Census: Preparing for JWST Spectroscopy The Astrophysical Journal Supplement Series ·Kimihiko Nakajima, Masami Ouchi, Yi Xu, Michael Rauch, Yuichi Harikane, Subba Rao Polimera, Yuki Isobe, Haruka Kusakabe, Tohru Nagao, Yoshiaki Ono, Masato Onodera, Yuma Sugahara, Ji Hoon Kim, Yutaka Komiyama, Chien‐Hsiu Lee, Fakhri S. Zahedy	2022	42
19	ALMA Observations of CO Emission from Luminous Lyman-break Galaxies at z = 6.0293–6.2037 The Astrophysical Journal ·Yoshiaki Ono, Seiji Fujimoto, Yuichi Harikane, Masami Ouchi, L. Vallini, Andrea Ferrara, Takatoshi Shibuya, A. Pallottini, Akio Inoue, Masatoshi Imanishi, Kazuhiro Shimasaku, Takuya Hashimoto, Chien‐Hsiu Lee, Yuma Sugahara, Yoichi Tamura, Kotaro Kohno, Malte Schramm	2022	5
20	EVOLUTION OF THE SIZES OF GALAXIES OVER 7 < z < 12 REVEALED BY THE 2012 HUBBLE ULTRA DEEP FIELD CAMPAIGN eScholarship (California Digital Library) ·Yoshiaki Ono, Masami Ouchi, Emma Curtis-Lake, Matthew A. Schenker, Richard S. Ellis, R. J. McLure, J. S. Dunlop, Brant Robertson, Anton M. Koekemoer, R. A. A. Bowler, Alexander B. Rogers, Evan E. Schneider, S. Charlot, Daniel P. Stark, Kazuhiro Shimasaku, Steven R. Furlanetto, Michele Cirasuolo	2013	57

About Masami Ouchi

Masami Ouchi is a scholar working on Instrumentation, Astronomy and Astrophysics, Nuclear and High Energy Physics, Statistical and Nonlinear Physics and Biophysics, having authored 151 papers that have together received 8.9k indexed citations. Recurring topics across this work include Galaxies: Formation, Evolution, Phenomena (137 papers), Astronomy and Astrophysical Research (67 papers), Astrophysics and Star Formation Studies (40 papers), Stellar, planetary, and galactic studies (31 papers), Gamma-ray bursts and supernovae (31 papers), Astrophysical Phenomena and Observations (30 papers), Astrophysics and Cosmic Phenomena (28 papers) and Radio Astronomy Observations and Technology (16 papers). The work is most often cited by research in Instrumentation (3.9k citations), Astronomy and Astrophysics (8.6k citations), Nuclear and High Energy Physics (1.7k citations), Atomic and Molecular Physics, and Optics (413 citations) and Statistical and Nonlinear Physics (160 citations). Masami Ouchi has collaborated with scholars based in Japan, United States and United Kingdom. Frequent co-authors include Kazuhiro Shimasaku, Yoshiaki Ono, Kimihiko Nakajima, Yuichi Harikane, Sadanori Okamura, Nobunari Kashikawa, Hisanori Furusawa, Richard S. Ellis, Takatoshi Shibuya and Daniel P. Stark. Their work appears in journals such as The Astrophysical Journal, Monthly Notices of the Royal Astronomical Society, The Astrophysical Journal Supplement Series, Publications of the Astronomical Society of Japan and The Astronomical Journal.

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