M. Hagimoto

ADF22-WEB: Massive galaxy formation shaped by cosmic web filaments in the z = 3.1 proto-cluster core

Hideki Umehata, Ian Smail, Charles C. Steidel +7

We present a census of dust, molecular gas, and galaxy structure in 18 dusty star-forming galaxies (DSFGs) at $z = 3.09$ embedded in Ly $α$ -traced cosmic web filaments in the core of…

Diversity of Ionized Gas Structures in Nearby Metal-poor Dwarf Galaxies

Yuki Takagishi, Takuya Hashimoto, Kazuya Matsubayashi +13

We investigate whether optical and far-infrared [O III] emission from nearby metal-poor dwarf galaxies can be represented by a homogeneous one-zone ionized-gas model with a single…

Anti-windup PI controller for millimeter-wave adaptive optics: a Nobeyama 45 m radio telescope simulation

Ichiro Jikuya, Yoichi Tamura, Akio Taniguchi +8

This work addresses the control problem for Millimeter-wave Adaptive Optics (MAO), which we define as compensating for the distance variation between the primary reflector (M1) and…

Millimeter-wave adaptive optics: Demonstrating closed-loop correction for lowest Zernike modes

Yoichi Tamura, Akio Taniguchi, Kotaro Iwakami +15

We report on a five-element prototype wavefront sensor for millimeter-wave adaptive optics (MAO), enabling closed-loop correction of tip-tilt and defocus via secondary mirror (M2)…

RIOJA. Environmental Effects on Stellar Populations and Ionized Gas in a Protocluster at $z = 7.88$

Wataru Osone, Takuya Hashimoto, Javier Álvarez-Márquez +23

Protoclusters in the epoch of reionization provide key laboratories for investigating how environment shapes early galaxy formation and evolution, and may also have contributed to…

A Wideband Millimeter-wave Receiver at 210-350 GHz for LMT-FINER

Haoran Kang, Takafumi Kojima, Takeshi Sakai +9

The Far-Infrared Nebular Emission Receiver (FINER) project is developing two wideband dual-polarization sideband-separating receivers covering 120-210 GHz and 210-350 GHz to effici…

FINER: development of the wideband millimeter-wave receiver system and preparations for first light on the Large Millimeter Telescope

Akio Taniguchi, Yoichi Tamura, Takeshi Sakai +38

The recent discovery of an excess of luminous galaxies in the early Universe necessitates sensitive and wideband millimeter spectroscopy to understand their rapid growth. To addres…

Development of TIFUUN: Terahertz Integral Field Units with Universal Nanotechnology

Akira Endo, Tom J. L. C. Bakx, Jochem J. A. Baselmans +50

TIFUUN (THz Integral Field Units with Universal Nanotechnology) is an ultra-wideband mm-submm wave imaging spectrometer that capitalizes on the highly scalable integrated supercond…

DREAMS. JWST Spectroscopy of a $z = 8.3$ Galaxy with an ALMA Dust Continuum Detection: Early Dust, Very High $T_{dust}$ , and a Multi-wavelength [OIII] Ratio Discrepancy

Kana Takechi, Masami Ouchi, Kimihiko Nakajima +10

We present a deep DREAMS JWST/NIRSpec MSA medium-grating spectrum of MACS0416-Y1, a galaxy at $z = 8.312$ with the highest-redshift ALMA dust continuum detection to date, in order to…

Resolving the Dust Budget Crisis at $z \sim 8$ with Optically Thick, High-Density Molecular Clumps: MACS0416_Y1

Ryusei R. Kano, Tsutomu T. Takeuchi, Erina R. Kawamoto +3

Dust plays a crucial role in galaxy evolution by shaping the spectral energy distribution (SED) and star formation history. However, standard models often underestimate the infrare…

Breathless BEARS: [O $_{III}$ ] 88 $μ$ m Emission of Dusty Star-Forming Galaxies at $z = 3 - 4$

T. J. L. C. Bakx, Hiddo S. B. Algera, Prachi Prajapati +13

We present [O $_{III}$ ] 88 $μ$ m observations towards four $Herschel$ -selected dusty star-forming galaxies (DSFGs; log $_{10}$ $μ$ L $_{IR}$ /L $_{⊙}$ = 13.5 - 14 at $z…

Probing Infrared eXcess to Investigate Early-Universe Dust (PIXIEDust)

Tom J. L. C. Bakx, Hiddo S. B. Algera, Jean-Baptiste Jolly +25

Despite the implied presence of dust through reddened UV emission in high-redshift galaxies, no dust emission has been detected in the (sub)millimetre regime beyond $z > 8.3$ . This…

astro-ph.GA2025★ 2 cited

The LMT 2 millimeter receiver system (B4R). II. Science demonstration observations toward Orion-KL/OMC-1

Teppei Yonetsu, Ryohei Kawabe, Yuki Yoshimura +26

We present the results of mapping and single-point spectral scans toward Orion-KL/OMC-1 performed as science demonstrations of a 2 mm SIS receiver, the Band 4 Receiver (B4R), insta…

astro-ph.IM2025

The LMT 2 Millimeter Receiver System (B4R). I. Overview and Results of Science Demonstration

Ryohei Kawabe, Takeshi Sakai, Kunihiko Tanaka +30

We report on the results of the on-sky test and science demonstration conducted with the 2 mm receiver system, B4R, on the 50 m Large Millimeter Telescope (LMT), located at an alti…

RIOJA. The dusty outflows and density-complex interstellar medium in the N-enhanced lensed galaxy RXCJ2248-ID at z=6.1

A. Crespo Gómez, Y. Tamura, L. Colina +19

We present an analysis on the kinematics and physical properties of the ionized gas in the lensed galaxy RXCJ2248-ID at z=6.1 based on high-resolution JWST NIRSpec/IFU data in comb…

A warm ultra-luminous infrared galaxy just 600 million years after the Big Bang

T. J. L. C. Bakx, Laura Sommovigo, Yoichi Tamura +24

We present an Atacama Large Millimeter/submillimeter Array (ALMA) Band 9 continuum detection ( $3.3 σ$ ) of MACS0416_Y1 that confirms the suspected warm dust (91 $_{- 35}^{+ 62}$ K) of…

RIOJA. Young Starburst and Ionized Gas Outflows in a $z = 7.212$ Galaxy Uncovered by JWST NIRCam and NIRSpec Observations

Yi W. Ren, Akio K. Inoue, Javier Álvarez-Márquez +21

We present analysis of JWST NIRCam and NIRSpec observations of the galaxy SXDF-NB1006-2 at $z = 7.212$ , as part of the Reionization and the ISM/Stellar Origins with JWST and ALMA (…

The Photometric Analysis of the Environment Around Two Dusty Star-Forming Galaxies at $z \sim 2$

Joe Bhangal, Allison W. S. Man, Tom J. L. C. Bakx +7

Studying the environments of dusty star-forming galaxies (DSFGs) provides insight into whether these luminous systems are reliable signposts of large-scale overdensities. Evidence…

ELPIS: Accelerated metal and dust enrichment in a proto-cluster core at $z \approx 8$

Hideki Umehata, Yoichi Tamura, Yoshinobu Fudamoto +17

We present a study of the metal, dust, and molecular gas content in galaxies within the A2744-z7p9OD proto-cluster at z ~ 7.88. We focus on two galaxy groups, the Quintet and the C…

Early massive galaxy formation in the core of a galaxy protocluster 650 million years after the Big Bang

Yoshinobu Fudamoto, Yurina Nakazato, Daniel Ceverino +24

Rest-frame optical observations with the James Webb Space Telescope (JWST) have uncovered a population of massive galaxies, exceeding $1 0^{10}$ solar masses, present less than a bi…

astro-ph.GA2025★ 1 cited

Extremely UV-bright starbursts at the end of cosmic reionization

R. Marques-Chaves, D. Schaerer, M. Dessauges-Zavadsky +22

We present a study of 27 very UV-bright (-22.0<MUV<-24.4) sources at z~6 identified in SHELLQs survey. Stacking their rest-frame UV spectra reveals a prominent NV1240A P-Cygni, con…

RIOJA. JWST and ALMA unveil the inhomogeneous and complex ISM structure in a star-forming galaxy at $z = 6.81$

Mitsutaka Usui, Ken Mawatari, Javier Álvarez-Márquez +21

We report the discovery of a complex, density-stratified interstellar medium (ISM) in the star-forming galaxy COS-2987 at $z = 6.81$ , revealed by the unprecedented synergy between…