206 citations · 2.1k across the 99 of their papers we have counts for
11 papers · 1 filter
Enhanced star formation and metallicity deficit in the USS 1558-003 forming protocluster at z=2.53
Jose Manuel Pérez-Martínez, Tadayuki Kodama, Yusei Koyama +6
We use K-band multi-object near-infrared spectroscopy with Keck/MOSFIRE to search for environmental imprints on the gas properties of 27 narrow-band selected H emitters (HAEs) a…
A proto-cluster of massive quiescent galaxies at z=4
Masayuki Tanaka, Masato Onodera, Rhythm Shimakawa +7
We report on discovery of a concentration of massive quiescent galaxies located at z=4. The concentration is first identified using high-quality photometric redshifts based on deep…
COALAS II. Extended molecular gas reservoirs are common in a distant, forming galaxy cluster
Zhengyi Chen, Helmut Dannerbauer, Matthew Lehnert +24
This paper presents the results of 475 hours of interferometric observations with the Australia Telescope Compact Array towards the Spiderweb protocluster at \(z=2.16\). We search…
ERGO-ML: Comparing IllustrisTNG and HSC galaxy images via contrastive learning
Lukas Eisert, Connor Bottrell, Annalisa Pillepich +5
Modern cosmological hydrodynamical galaxy simulations provide tens of thousands of reasonably realistic synthetic galaxies across cosmic time. However, quantitatively assessing the…
Environmental impacts on the rest-frame UV size and morphology ofstar-forming galaxies at
Abdurrahman Naufal, Yusei Koyama, Rhythm Shimakawa +1
We report the measurement of rest-frame UV size and morphology of H-emission-selected star-forming galaxies (HAEs) in four protoclusters at z 2 (PKS 1138-262, USS 1558-00…
GALAXY CRUISE: Deep Insights into Interacting Galaxies in the Local Universe
Masayuki Tanaka, Michitaro Koike, Sei'ichiro Naito +15
We present the first results from GALAXY CRUISE, a community (or citizen) science project based on data from the Hyper Suprime-Cam Subaru Strategic Program (HSC-SSP). The current p…
GALAXY CRUISE: Spiral and ring classifications for bright galaxies at z=0.01-0.3
Rhythm Shimakawa, Masayuki Tanaka, Kei Ito +1
This paper presents a morphology classification catalog of spiral and ring features of 59,854 magnitude-limited galaxies ( mag, and additional 628,005 subsamples down to $r…
A massive quiescent galaxy in a group environment at
Takumi Kakimoto, Masayuki Tanaka, Masato Onodera +10
We report on the spectroscopic confirmation of a massive quiescent galaxy at in the COSMOS field. The object was first identified as a galaxy with suppressed…
Line-of-sight structure of troughs identified in Subaru Hyper Suprime-Cam Year 3 weak lensing mass maps
Takumi Shimasue, Ken Osato, Masamune Oguri +2
We perform the weak lensing mass mapping analysis to identify troughs, which are defined as local minima in the mass map. Since weak lensing probes projected matter along the line-…
New insights into the role of AGNs in forming the cluster red sequence
Rhythm Shimakawa, José Manuel Pérez-Martínez, Yusei Koyama +7
As a considerable investment of time from various telescope facilities were dedicated toward studying the Spiderweb protocluster at , it so far remains one of the most exten…
Inspiraling streams of enriched gas observed around a massive galaxy 11 billion years ago
Shiwu Zhang, Zheng Cai, Dandan Xu +19
Stars form in galaxies, from gas that has been accreted from the intergalactic medium. Simulations have shown that recycling of gas-the reaccretion of gas that was previously eject…