RHYTHM SHIMAKAWA

Associate Professor

Waseda University

Japan

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About

RHYTHM SHIMAKAWA is an Associate Professor at Waseda University, Japan. His research focuses on galaxy formation and evolution, as evidenced by his recent articles which include studies on galaxy groups, quasar candidates, and various aspects of protocluster environments utilizing advanced observational techniques such as those from the JWST and Subaru Hyper Suprime-Cam. His work significantly contributes to our understanding of the quiescent galaxy population and the effects of dense environments on galaxy development.

Articles (20)

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2025

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2021

Collaborators (11)

Masao Hayashi

特任助教/Project Assistant Professor

自然科学研究機構国立天文台/National Astronomical Observatory of Japan

JAPAN

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Zheng Zheng

Professor

University of Utah

UNITED STATES

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Marcin Sawicki

Professor

Saint Mary's University

CANADA

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David Sobral

Reader (Associate Professor)

University of Lancaster

UNITED KINGDOM

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Takuya Hashimoto

Assistant Professor

University of Tsukuba

JAPAN

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Renyue Cen

Princeton University

UNITED STATES

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Takumi S Tanaka

University of Tokyo

JAPAN

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Andrew Connolly

University of Washington

UNITED STATES

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Nobuhiro Okabe

Hiroshima University

JAPAN

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Meg Urry

Israel Munson Professor of Physics and Astronomy

Yale University

UNITED STATES

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Masatoshi Imanishi

助教/Assistant Professor

自然科学研究機構国立天文台/National Astronomical Observatory of Japan

JAPAN

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RHYTHM SHIMAKAWA

Research Interests

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Articles (20)

Cluster Candidates with Massive Quiescent Galaxies at z ∼ 2

The first direct imaging of the silhouette of a damped Lyman α system along the line-of-sight to a background galaxy

Merger fraction in galaxy groups and clusters at z < 0.2: A non-parametric morphological study with Subaru Hyper Suprime-Cam

RIDEN pilot survey: broad-band selection of candidate quasars with extended Lyman-α nebulae using CLAUDS–HSC-SSP–DUNES2 joint data

Denser Environments Cultivate Larger Galaxies: A Comprehensive Study beyond the Local Universe with 3 Million Hyper Suprime-Cam Galaxies

JWST/NIRSpec spectroscopy of intermediate-mass quiescent galaxies at z ~ 3-4

JWST/NIRCam Narrowband Survey of Paβ Emitters in the Spiderweb Protocluster at z = 2.16

JWST/NIRCam Paβ Narrowband Imaging Reveals Ordinary Dust Extinction for Hα Emitters within the Spiderweb Protocluster at z = 2.16

Revealing the Quiescent Galaxy Population in the Spiderweb Protocluster at z = 2.16 with Deep HST/WFC3 Slitless Spectroscopy

Spider-Webb: JWST Near Infrared Camera resolved galaxy star formation and nuclear activities in the Spiderweb protocluster at z = 2.16

Inspiraling streams of enriched gas observed around a massive galaxy 11 billion years ago

The Environmental Dependence of Gas Properties in Dense Cores of a Protocluster at z ∼ 2.5 Revealed with ALMA

A systematic search for galaxy protocluster cores at the transition epoch of their star formation activity

King Ghidorah Supercluster: Mapping the light and dark matter in a new supercluster at z = 0.55 using the subaru hyper suprime-cam

Signs of environmental effects on star-forming galaxies in the Spiderweb protocluster at z = 2.16

Search for extended Lyman-α emission around 9k quasars at z = 2–3

Passive spiral galaxies deeply captured by Subaru Hyper Suprime-Cam

Hα emission in the outskirts of galaxies at z = 0.4

Where’s Swimmy?: Mining unique color features buried in galaxies by deep anomaly detection using Subaru Hyper Suprime-Cam data

Subaru Hyper Suprime-Cam revisits the large-scale environmental dependence on galaxy morphology over 360 deg2 at z = 0.3–0.6

Collaborators (11)

Masao Hayashi

Zheng Zheng

Marcin Sawicki

David Sobral

Takuya Hashimoto

Renyue Cen

Takumi S Tanaka

Andrew Connolly

Nobuhiro Okabe

Meg Urry

Masatoshi Imanishi

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RHYTHM SHIMAKAWA

Research Interests

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Contact this professor

About

Articles (20)

Cluster Candidates with Massive Quiescent Galaxies at z ∼ 2

The first direct imaging of the silhouette of a damped Lyman α system along the line-of-sight to a background galaxy

Merger fraction in galaxy groups and clusters at z &lt; 0.2: A non-parametric morphological study with Subaru Hyper Suprime-Cam

RIDEN pilot survey: broad-band selection of candidate quasars with extended Lyman-α nebulae using CLAUDS–HSC-SSP–DUNES2 joint data

Denser Environments Cultivate Larger Galaxies: A Comprehensive Study beyond the Local Universe with 3 Million Hyper Suprime-Cam Galaxies

JWST/NIRSpec spectroscopy of intermediate-mass quiescent galaxies at z ~ 3-4

JWST/NIRCam Narrowband Survey of Paβ Emitters in the Spiderweb Protocluster at z = 2.16

JWST/NIRCam Paβ Narrowband Imaging Reveals Ordinary Dust Extinction for Hα Emitters within the Spiderweb Protocluster at z = 2.16

Revealing the Quiescent Galaxy Population in the Spiderweb Protocluster at z = 2.16 with Deep HST/WFC3 Slitless Spectroscopy

Spider-Webb: JWST Near Infrared Camera resolved galaxy star formation and nuclear activities in the Spiderweb protocluster at z = 2.16

Inspiraling streams of enriched gas observed around a massive galaxy 11 billion years ago

The Environmental Dependence of Gas Properties in Dense Cores of a Protocluster at z ∼ 2.5 Revealed with ALMA

A systematic search for galaxy protocluster cores at the transition epoch of their star formation activity

King Ghidorah Supercluster: Mapping the light and dark matter in a new supercluster at z = 0.55 using the subaru hyper suprime-cam

Signs of environmental effects on star-forming galaxies in the Spiderweb protocluster at z = 2.16

Search for extended Lyman-α emission around 9k quasars at z = 2–3

Passive spiral galaxies deeply captured by Subaru Hyper Suprime-Cam

Hα emission in the outskirts of galaxies at z = 0.4

Where’s Swimmy?: Mining unique color features buried in galaxies by deep anomaly detection using Subaru Hyper Suprime-Cam data

Subaru Hyper Suprime-Cam revisits the large-scale environmental dependence on galaxy morphology over 360 deg2 at z = 0.3–0.6

Collaborators (11)

Masao Hayashi

Zheng Zheng

Marcin Sawicki

David Sobral

Takuya Hashimoto

Renyue Cen

Takumi S Tanaka

Andrew Connolly

Nobuhiro Okabe

Meg Urry

Masatoshi Imanishi

Make your next move.

Merger fraction in galaxy groups and clusters at z < 0.2: A non-parametric morphological study with Subaru Hyper Suprime-Cam