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Revisiting the Dragonfly Galaxy II. Young, radiatively efficient radio-loud AGN drives massive molecular outflow in a starburst merger at z=1.92
Yuxing Zhong, Akio K. Inoue, Yuma Sugahara +4
Radio-loud active galactic nuclei (RLAGNs) are a unique AGN population and were thought to be preferentially associated with supermassive black holes (SMBHs) at low accretion rates…
SERENADE II: An ALMA Multi-Band Dust-Continuum Analysis of 28 Galaxies at and the Physical Origin of the Dust Temperature Evolution
Ikki Mitsuhashi, Yuichi Harikane, Franz E. Bauer +14
We present an analysis of ALMA multi-band dust-continuum observations for 28 spectroscopically-confirmed bright Lyman-break galaxies at . Our sample consists of 11 galaxies…
Molecular outflow in the reionization-epoch quasar J2054-0005 revealed by OH 119 m observations
Dragan Salak, Takuya Hashimoto, Akio K. Inoue +8
Molecular outflows are expected to play a key role in galaxy evolution at high redshift. To study the impact of outflows on star formation at the epoch of reionization, we performe…
CLASSY VIII: Exploring the Source of Ionization with UV ISM diagnostics in local High- Analogs
Matilde Mingozzi, Bethan L. James, Danielle A. Berg +27
In the current JWST era, rest-frame UV spectra play a crucial role in enhancing our understanding of the interstellar medium (ISM) and stellar properties of the first galaxies in t…
Revisiting the Dragonfly Galaxy I. High-resolution ALMA and VLA Observations of the Radio Hotspots in a Hyper-luminous Infrared Galaxy at
Yuxing Zhong, Akio K. Inoue, Yuma Sugahara +4
Radio-loud active galactic nuclei (RLAGNs) are rare among AGN populations. Lacking high-resolution and high-frequency observations, their structure and evolution stages are not wel…
Reionization and the ISM/Stellar Origins with JWST and ALMA (RIOJA): The core of the highest redshift galaxy overdensity at confirmed by NIRSpec/JWST
Takuya Hashimoto, Javier Álvarez-Márquez, Yoshinobu Fudamoto +20
The protoclusters in the epoch of reionization, traced by galaxies overdensity regions, are ideal laboratories for studying the process of stellar assembly and cosmic reionization.…
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…
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…
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…
The Extended [CII] under Construction? Observation of the brightest high-z lensed star-forming galaxy at z = 6.2
Yoshinobu Fudamoto, Akio K. Inoue, Dan Coe +26
We present results of [CII] emission line observations, and report the spectroscopic redshift confirmation of a strongly lensed () star-forming galaxy, MAC…
Updated measurements of [O III] 88 m, [C II] 158 m, and Dust Continuum Emission from a z=7.2 Galaxy
Yi W. Ren, Yoshinobu Fudamoto, Akio K. Inoue +13
We present updated measurements of the [O III] 88 m, [C II] 158 m, and dust continuum emission from a star-forming galaxy at , SXDF-NB1006-2, by utilizing Atacama La…
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 300 pc resolution imaging of a z = 8.31 galaxy: Turbulent ionized gas and potential stellar feedback 600 million years after the Big Bang
Yoichi Tamura, Tom J. L. C. Bakx, Akio K. Inoue +16
We present the results of 300 pc resolution ALMA imaging of the [OIII] 88 m line and dust continuum emission from a Lyman break galaxy MACS0416_Y1. The velocity-inte…
CLASSY VI: Density, Structure and Size of Galactic Outflows
Xinfeng Xu, Timothy Heckman, Alaina Henry +12
Galaxy formation and evolution are regulated by the feedback from galactic winds. Absorption lines provide the most widely available probe of winds. However, since most data only p…