107 citations · 138 across the 5 of their papers we have counts for
5 papers · 1 filter
EMPRESS. XV. A New Determination of the Primordial Helium Abundance Suggesting a Moderately Low Value
Hiroto Yanagisawa, Masami Ouchi, Akinori Matsumoto +18
We present a new constraint on the primordial helium abundance, , based on Subaru observations. A major source of uncertainty in previous determination…
EMPRESS. X. Spatially resolved mass-metallicity relation in extremely metal-poor galaxies: evidence of episodic star-formation fueled by a metal-poor gas infall
Kimihiko Nakajima, Masami Ouchi, Yuki Isobe +47
Using the Subaru/FOCAS IFU capability, we examine the spatially resolved relationships between gas-phase metallicity, stellar mass, and star-formation rate surface densities (Sigma…
EMPRESS. IX. Extremely Metal-Poor Galaxies are Very Gas-Rich Dispersion-Dominated Systems: Will JWST Witness Gaseous Turbulent High-z Primordial Galaxies?
Yuki Isobe, Masami Ouchi, Kimihiko Nakajima +49
We present kinematics of 6 local extremely metal-poor galaxies (EMPGs) with low metallicities () and low stellar masses (). Tak…
Three new VHS-DES Quasars at 6.7 < z < 6.9 and Emission Line Properties at z > 6.5
S. L. Reed, M. Banerji, G. D. Becker +58
We report the results from a search for z > 6.5 quasars using the Dark Energy Survey (DES) Year 3 dataset combined with the VISTA Hemisphere Survey (VHS) and WISE All-Sky Survey. O…
Ly Emitters with Very Large Ly Equivalent Widths, EW(Ly) Å, at
Takuya Hashimoto, Masami Ouchi, Kazuhiro Shimasaku +6
We present physical properties of spectroscopically confirmed Ly emitters (LAEs) with very large rest-frame Ly equivalent widths EW(Ly). Although the definition…