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34 papers
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 embedded in Ly-traced cosmic web filaments in the core of…
Insights into Jet-Induced Cloud Disruption in NGC 1316: ALMA Reveals a Spatially Extended Molecular Gas
Kana Morokuma-Matsui, Alexander Y. Wagner, Filippo M. Maccagni +14
We present ALMA CO() observations of a nearby radio galaxy NGC1316 at a 100-pc resolution to investigate the impact of AGN jets on the molecular gas. The molecular gas exhib…
Molecular Gas Structure and Star Formation Diversity in Stephan's Quintet Revealed by ACA CO(1-0) Mapping
Misaki Yamamoto, Fumiya Maeda, Kazuyuki Muraoka +10
We present CO(1-0) mapping across the entire system of Stephan's Quintet, a well-known compact galaxy group, observed by Atacama Compact Array (7\,m array + Total Power) of…
Compact dusty starbursts at cosmic noon linked to high-energy neutrinos
Yuji Urata, Kuiyun Huang, Bunyo Hatsukade +7
The origin of high-energy astrophysical neutrinos remains unresolved, and secure electromagnetic counterparts to individual events are rare despite rapid follow-up. Dusty star-form…
An AGN in the Antennae galaxies ?
Shinya Komugi, Toshiki Saito, Tomonari Michiyama +5
Time variability is a strong probe of energetic phenomena which occur at small spatial scales, like Active Galactic Nuclei (AGN). We use ALMA observations at 100 GHz executed over…
Spectrally and spatially resolved (sub)millimeter HCN-to-HCO flux ratios in nearby ultraluminous infrared galaxies
Masatoshi Imanishi, Yuri Nishimura, Shunsuke Baba +2
We present the results of our investigations of spectrally and spatially resolved (sub)millimeter HCN-to-HCO flux ratios at J=2-1, J=3-2, and/or J=4-3 in 18 nearby ( 0.1…
Multiphase Gas Structure in the Circumnuclear Region of NGC 5506 Observed with ALMA
Kana Takechi, Hiroshi Nagai, Nozomu Kawakatu +7
We present a study of the multiphase gas structure and kinematics of the circumnuclear disk (CND) of NGC 5506, a nearby edge-on Seyfert galaxy, at a spatial resolution of …
Cloud-Cloud Collisions Induce Filament-Mediated Super Star Cluster Formation in the Antennae Overlap Region: Evidence from ALMA and JWST
Tomonari Michiyama, Toshiki Saito, Kouichiro Nakanishi +5
The formation of super star clusters (SSCs) in galaxies remains a fundamental yet unresolved problem. Among the proposed mechanisms, cloud-cloud collisions (CCCs) have been suggest…
ALMA Sub-parsec Resolution Dense Molecular Line Observations of the NGC 1068 Nucleus
Masatoshi Imanishi, Bernd Vollmer, Yoshiaki Hagiwara +3
We present the results of our ALMA observations of the dense molecular HCN J=4-3 and HCO J=4-3 lines at 1 pc (14 mas) resolution in the nuclear region of…
ALMA Deep Field in SSA22: Reconstructed [CII] Luminosity Function at z = 6
Natsuki H. Hayatsu, Rob J. Ivison, Paola Andreani +19
The ADF22 line survey reported detections of two high- line-emitting source candidates above 6-, both of which were shown to be spurious after follow-up observations. We inve…
Formation of Substructure in Luminous Submillimeter Galaxies (FOSSILS): Evidence of Multiple Pathways to Trigger Starbursts in Luminous Submillimeter Galaxies
Ryota Ikeda, Daisuke Iono, Ken-ichi Tadaki +19
We present an analysis of rest-frame optical and far-infrared continuum emission in three luminous submillimeter galaxies (SMGs) at . The SMGs are spatial…
Revisiting the supermassive black hole mass of NGC 7052 using high spatial resolution molecular gas observed with ALMA
Hai N. Ngo, Dieu D. Nguyen, Tinh Q. T. Le +9
We present our dynamical mass constraints on the central supermassive black hole (SMBH) in the early-type galaxy NGC 7052 using high spatial-resolution observations of CO(2-…
Comprehensive JWST+ALMA Study on the Extended Ly Emitters, Himiko and CR7 at : Blue Major Merger Systems in Stark Contrast to Submillimeter Galaxies
Tomokazu Kiyota, Masami Ouchi, Yi Xu +14
We present various properties of two bright extended Ly objects, Himiko and CR7, at thoroughly investigated with JWST/NIRCam photometry, NIRSpec-IFU spectroscopy, and AL…
ADF22+: a declining faint end in the far-infrared luminosity function in the SSA22 protocluster at z=3.09
Shuo Huang, Hideki Umehata, Ian Smail +6
Protoclusters represent the densest regions of cosmic large-scale structure in the early universe and are the environment where present-day massive elliptical galaxies are assemble…
No Galaxy-Scale [CII] Fast Outflow in the z=6.72 Red Quasar HSC J12050000
Mahoshi Sawamura, Takuma Izumi, Kouichiro Nakanishi +17
HSC 120505.09-000027.9 (J12050000) is one of the highest redshift () dust-reddened quasars (red quasars) known to date. We present an improved analysis of Atacama Large…
ADF22-WEB: Detection of a molecular gas reservoir in a massive quiescent galaxy located in a proto-cluster core
Hideki Umehata, Mariko Kubo, Kouichiro Nakanishi
We present a study of the molecular gas reservoirs and dust contents in three quiescent galaxies (QGs) located in the core of the SSA22 proto-cluster. Using the Atacama La…
ADF22-WEB: ALMA and JWST (sub)kpc-scale views of dusty star-forming galaxies in a 3 proto-cluster
Hideki Umehata, Mariko Kubo, Ian Smail +4
We present a morphological analysis of ALMA and JWST NIRCam images of nine dusty star-forming galaxies (DSFGs) at zspec=3.09, all embedded within the cosmic web filaments at the SS…
Large molecular and dust reservoir of a gravitationally-lensed submillimeter galaxy behind the Lupus-I molecular cloud
Yoichi Tamura, Akio Taniguchi, Tom J. L. C. Bakx +14
We report the Australian Telescope Compact Array and Nobeyama 45 m telescope detection of a remarkably bright = 44 mJy) submillimeter galaxy MM J154506.4-344318…
Merging gas-rich galaxies that harbor low-luminosity twin quasars at z = 6.05: a promising progenitor of the most luminous quasars
Takuma Izumi, Yoshiki Matsuoka, Masafusa Onoue +15
We present ALMA [CII] 158 m line and underlying far-infrared (FIR) continuum emission observations ( resolution) toward a quasar-quasar pair system recentl…
Sub-Parsec-Scale Jet-Driven Water Maser with Possible Gravitational Acceleration in the Radio Galaxy NGC 1052
Seiji Kameno, Yuichi Harikane, Satoko Sawada-Satoh +5
We report sub-pc-scale observations of the 321-GHz HO emission line in the radio galaxy NGC 1052. The HO line emitter size is constrained in milliarcsec distributed…
ALMA 0.5 kpc Resolution Spatially Resolved Investigations of Nuclear Dense Molecular Gas Properties in Nearby Ultraluminous Infrared Galaxies Based on HCN and HCO Three Transition Line Data
Masatoshi Imanishi, Shunsuke Baba, Kouichiro Nakanishi +1
We present the results of our ALMA 0.5 kpc-resolution dense molecular line (HCN and HCO J=2-1, J=3-2, and J=4-3) observations of 12 nearby (ultra)luminous infrared…
Dense Molecular Gas Properties of the Central Kpc of Nearby Ultraluminous Infrared Galaxies Constrained by ALMA Three Transition-line Observations
Masatoshi Imanishi, Shunsuke Baba, Kouichiro Nakanishi +1
We report the results of ALMA 1-2 kpc-resolution, three rotational transition line (J=2-1, J=3-2, and J=4-3) observations of multiple dense molecular gas tracers (HCN, HCO, a…
ALMA 0.02"-resolution observations reveal HCN-abundance-enhanced counter-rotating and outflowing dense molecular gas at the NGC 1068 nucleus
Masatoshi Imanishi, Dieu D. Nguyen, Keiichi Wada +6
We present ALMA ~0.02"-resolution observations of the nucleus of the nearby (~14 Mpc) type-2 AGN NGC 1068 at HCN/HCO+/HNC J=3-2 lines, as well as at their 13C isotopologue and vibr…
Tests of star formation metrics in the low metallicity galaxy NGC 5253 using ALMA observations of H30 line emission
G. J. Bendo, R. E. Miura, D. Espada +5
We use Atacama Large Millimeter/submillimeter Array (ALMA) observations of H30 (231.90 GHz) emission from the low metallicity dwarf galaxy NGC 5253 to measure the star formation…