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Ly Emission at : Clear Ly Equivalent Width Evolution Indicating the Late Cosmic Reionization History
Minami Nakane, Masami Ouchi, Kimihiko Nakajima +6
We present the evolution of Ly emission derived from 53 galaxies at that are identified by multiple JWST/NIRSpec spectroscopy programs of ERS, GO, DDT, and GTO. The…
JADES: Carbon enrichment 350 Myr after the Big Bang in a gas-rich galaxy
Francesco D'Eugenio, Roberto Maiolino, Stefano Carniani +25
Finding the emergence of the first generation of metals in the early Universe, and identifying their origin, are some of the most important goals of modern astrophysics. We present…
Stellar- and AGN-Driven Outflows in JWST Galaxies at z=3-9: More Frequent, Wider Opening Angles, and Mostly Bounded
Yi Xu, Masami Ouchi, Kimihiko Nakajima +5
We study outflows in 130 galaxies with -22<MUV<-16 at z=3-9 identified in JWST NIRSpec and NIRCam WFSS data taken by the ERO, CEERS, FRESCO, GLASS, and JADES programs. We identify…
Multiple emission lines of H emitters at from the broad and medium-band photometry in the ZFOURGE Survey
Nuo Chen, Kentaro Motohara, Lee R. Spitler +8
We present a multiple emission lines study of 1300 H emitters (HAEs) at in the ZFOURGE survey. In contrast to the traditional spectroscopic method, our sample…
Census for the Rest-frame Optical and UV Morphologies of Galaxies at : First Phase of Inside-Out Galaxy Formation
Yoshiaki Ono, Yuichi Harikane, Masami Ouchi +7
We present the rest-frame optical and UV surface brightness (SB) profiles for galaxies with mag at - ( of which are spectroscopically confir…
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…
Statistics for Galaxy Outflows at with Imaging and Spectroscopic Signatures Identified with JWST/NIRCam and NIRSpec Data
Yechi Zhang, Masami Ouchi, Kimihiko Nakajima +5
We present statistics of galaxy outflows indicated by spatially-extended gas emission and broad lines. With a total of 61 spectroscopically confirmed galaxies at $z\sim…
JWST-JADES. Possible Population III signatures at z=10.6 in the halo of GN-z11
Roberto Maiolino, Hannah Uebler, Michele Perna +32
Finding the first generation of stars formed out of pristine gas in the early Universe, known as Population III (PopIII) stars, is one of the most important goals of modern astroph…
JWST Measurements of Neutral Hydrogen Fractions and Ionized Bubble Sizes at Obtained with Ly Damping Wing Absorptions in 27 Bright Continuum Galaxies
Hiroya Umeda, Masami Ouchi, Kimihiko Nakajima +5
We present volume-averaged neutral hydrogen fractions $x_{\rm \HI}$ and ionized bubble radii measured with Ly damping wing absorption of galaxies at the epoch of rei…
GREX-PLUS Science Book
PLUS Science Team, Akio K. Inoue, Yuichi Harikane +28
GREX-PLUS (Galaxy Reionization EXplorer and PLanetary Universe Spectrometer) is a mission candidate for a JAXA's strategic L-class mission to be launched in the 2030s. Its primary…
EMPRESS. XIV. Strong High Ionization Lines of Young Galaxies at : Ionizing Spectra Consistent with the Intermediate Mass Black Holes with
Shun Hatano, Masami Ouchi, Hiroya Umeda +16
We present ionizing spectra estimated at 13.6--100 eV for ten dwarf galaxies with strong high ionization lines of He {\sc {ii}}4686 and [Ne {\sc{v}}]3426 ([Ne {\sc{iv}}]24…
EMPRESS. XIII. Chemical Enrichments of Young Galaxies Near and Far at z ~ 0 and 4-10: Fe/O, Ar/O, S/O, and N/O Measurements with Chemical Evolution Model Comparisons
Kuria Watanabe, Masami Ouchi, Kimihiko Nakajima +14
We present gas-phase elemental abundance ratios of 7 local extremely metal-poor galaxies (EMPGs) including our new Keck/LRIS spectroscopy determinations together with 33 JWST $z\si…
Pure Spectroscopic Constraints on UV Luminosity Functions and Cosmic Star Formation History From 25 Galaxies at Confirmed with JWST/NIRSpec
Yuichi Harikane, Kimihiko Nakajima, Masami Ouchi +5
We present pure spectroscopic constraints on the UV luminosity functions and cosmic star formation rate (SFR) densities from 25 galaxies at . By reducin…
Near-infrared Variability Detected in the Young Star-Forming Dwarf Galaxy SBS 0335-052E
Shun Hatano, Mitsuru Kokubo, Masami Ouchi +17
SBS~0335-052E is a young star-forming dwarf galaxy with a total stellar mass of and an extremely low metallicity (), which…
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-…
A JWST/NIRSpec First Census of Broad-Line AGNs at z=4-7: Detection of 10 Faint AGNs with M_BH~10^6-10^8 M_sun and Their Host Galaxy Properties
Yuichi Harikane, Yechi Zhang, Kimihiko Nakajima +6
We present a first statistical sample of faint type-1 AGNs at identified by JWST/NIRSpec deep spectroscopy. Among the 185 galaxies at confirmed with…
Ionized gas kinematics and chemical abundances of low-mass star-forming galaxies at
M. Llerena, R. Amorín, L. Pentericci +6
We selected 35 low-mass SFGs (7.9<log(M/M)<10.3) from deep spectroscopic surveys based on their CIII]1908 emission. We used follow-up NIR observations to examine thei…
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…
JWST Census for the Mass-Metallicity Star-Formation Relations at z=4-10 with the Self-Consistent Flux Calibration and the Proper Metallicity Calibrators
Kimihiko Nakajima, Masami Ouchi, Yuki Isobe +5
We present the evolution of the mass-metallicity (MZ) relations at z=4-10 derived with 135 galaxies identified in the JWST/NIRSpec data taken from the three major public spectrosco…
Redshift Evolution of the Electron Density in the ISM at Uncovered with JWST/NIRSpec Spectra and Line-Spread Function Determinations
Yuki Isobe, Masami Ouchi, Kimihiko Nakajima +5
We present electron densities in the inter-stellar medium (ISM) of star-forming galaxies at observed by the JWST/NIRSpec GLASS, ERO, and CEERS programs. We care…