201 citations · 2.1k across the 98 of their papers we have counts for
11 papers · 1 filter
FOREVER22: Gas and metal outflow from massive galaxies in protocluster regions
Naoki Harada, Hidenobu Yajima, Makito Abe
We study gas and metal outflow from massive galaxies in protocluster regions at by using the results of the FOREVER22 simulation project. Our simulations contain massive ha…
JWST Identification of Extremely Low C/N Galaxies with [N/O] at Evidencing the Early CNO-Cycle Enrichment and a Connection with Globular Cluster Formation
Yuki Isobe, Masami Ouchi, Nozomu Tominaga +9
We present chemical abundance ratios of 70 star-forming galaxies at -10 observed by the JWST/NIRSpec ERO, GLASS, and CEERS programs. Among the 70 galaxies, we have pinpoint…
Generation of high circular polarization of interstellar Lyman radiation triggering biological homochirality
Hajime Fukushima, Hidenobu Yajima, Masayuki Umemura
The homochirality of biological molecules on the Earth is a long-standing mystery regarding the origin of life. Circularly polarized ultraviolet (UV) light could induce the enantio…
Observational signatures of forming young massive clusters: continuum emission from dense HII regions
Mutsuko Inoguchi, Takashi Hosokawa, Hajime Fukushima +3
Young massive clusters (YMCs) are the most massive star clusters forming in nearby galaxies and are thought to be a young analogue to the globular clusters. Understanding the forma…
Detections of [C II] 158 m and [O III] 88 m in a Local Lyman Continuum Emitter, Mrk 54, and its Implications to High-redshift ALMA Studies
Ryota Ura, Takuya Hashimoto, Akio K. Inoue +17
We present integral field, far-infrared (FIR) spectroscopy of Mrk 54, a local Lyman Continuum Emitter (LCE), obtained with FIFI-LS on the Stratospheric Observatory for Infrared Ast…
Exploring the cosmic dawn and epoch of reionization with 21cm line
Hayato Shimabukuro, Kenji Hasegawa, Akira Kuchinomachi +2
The dark age of the universe, when no luminous object had existed, ended with the birth of the first stars, galaxies, and blackholes. This epoch is called cosmic dawn. Cosmic reion…
EMPRESS. XII. Statistics on the Dynamics and Gas Mass Fraction of Extremely-Metal Poor Galaxies
Yi Xu, Masami Ouchi, Yuki Isobe +49
We present demography of the dynamics and gas-mass fraction of 33 extremely metal-poor galaxies (EMPGs) with metallicities of and low stellar masses of $10^4-…
The formation of globular clusters with top-heavy initial mass functions
Hajime Fukushima, Hidenobu Yajima
We study the formation of globular clusters in massive compact clouds with the low-metallicity of by performing three-dimensional radiative-hydrodynamics simu…
UV & Ly halos of Ly emitters across environments at z=2.84
Satoshi Kikuta, Yuichi Matsuda, Shigeki Inoue +7
We present UV and Ly radial surface brightness (SB) profiles of Ly emitters (LAEs) at detected with the Hyper Suprime-Cam (HSC) on the Subaru Telescope. The depth of…
EMPRESS. XI. SDSS and JWST Search for Local and z~4-5 Extremely Metal-Poor Galaxies (EMPGs): Clustering and Chemical Properties of Local EMPGs
Moka Nishigaki, Masami Ouchi, Kimihiko Nakajima +16
We search for local extremely metal-poor galaxies (EMPGs), selecting photometric candidates by broadband color excess and machine-learning techniques with the SDSS photometric data…
Cosmological-Scale Lyman-alpha Forest Absorption Around Galaxies and AGN Probed with the HETDEX and SDSS Spectroscopic Data
Dongsheng Sun, Ken Mawatari, Masami Ouchi +12
We present cosmological-scale 3-dimensional (3D) neutral hydrogen ({\sc Hi}) tomographic maps at over a total of 837 deg in two blank fields that are developed with Ly$…