206 citations · 2.1k across the 99 of their papers we have counts for
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Stellar Velocity Dispersion of a Massive Quenching Galaxy at z=4.01
Masayuki Tanaka, Francesco Valentino, Sune Toft +12
We present the first stellar velocity dispersion measurement of a massive quenching galaxy at z=4.01. The galaxy is first identified as a massive z>~4 galaxy with suppressed star f…
Quiescent galaxies 1.5 billion years after the Big Bang and their progenitors
Francesco Valentino, Masayuki Tanaka, Iary Davidzon +18
We report two secure () and one tentative () spectroscopic confirmations of massive and quiescent galaxies through -band observations with Keck/MO…
The whole picture of the large-scale structure of the CL1604 supercluster at z0.9
Masao Hayashi, Yusei Koyama, Tadayuki Kodama +8
We present the large-scale structure over more than 50 comoving Mpc scale at z 0.9 where the CL1604 supercluster, which is one of the largest structures ever known at high r…
A spectroscopic study of a rich cluster at z=1.52 with Subaru LBT: the environmental impacts on the mass-metallicity relation
Shigeru V. Namiki, Yusei Koyama, Masao Hayashi +9
We present the results of our near-infrared (NIR) spectroscopic observations of a rich cluster candidate around a radio galaxy at (4C65.22) with Subaru/MOIRCS and LBT/LUCI…
Extended star-forming region within galaxies in a dense proto-cluster core at z=2.53
Tomoko L. Suzuki, Yosuke Minowa, Yusei Koyama +5
At , star-formation activity is thought to be high even in high-density environments such as galaxy clusters and proto-clusters. One of the critical but outstanding issues…
Do Galaxy Morphologies Really Affect the Efficiency of Star Formation during the Phase of Galaxy Transition?
Shuhei Koyama, Yusei Koyama, Takuji Yamashita +11
Recent simulations predict that the presence of stellar bulge suppress the efficiency of star formation in early-type galaxies, and this `morphological quenching' scenario is suppo…
Environmental impacts on molecular gas in protocluster galaxies at z~2
Ken-ichi Tadaki, Tadayuki Kodama, Masao Hayashi +12
We present the results from ALMA CO(3-2) observations of 66 Halpha-selected galaxies in three protoclusters around radio galaxies, PKS1138-262 (z=2.16) and USS1558-003 (z=2.53), an…