103 citations · 603 across the 39 of their papers we have counts for
34 papers · 1 filter
A Naked Dwarf: Molecular Gas in the Completely Stripped HI Tail of VCC 1249
Bumhyun Lee, Aeree Chung, Paolo Serra +12
We present the first observational hints of the severe removal of both molecular and HI gas from the dwarf galaxy VCC 1249. This extreme stripping event is thought to be driven by…
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…
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…
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…
From Non-Detection to Detection: Atacama Compact Array Mosaic Observations of Faint Extended [C I] Emission in NGC 7679
Tomonari Michiyama, Toshiki Saito, Kouichiro Nakanishi +8
We report the detection of [C I] -- emission in the nearby galaxy NGC 7679 using the Atacama Compact Array (ACA) of the Atacama Large Millimeter/submillimeter Array (…
Warm Gas in the Vicinity of a Supermassive Black hole 13 Billion Years Ago
Ken-ichi Tadaki, Federico Esposito, Livia Vallini +4
Quasars, powered by supermassive black holes (SMBH), are among the brightest objects in the universe. In the vicinity of an SMBH, X-ray photons from an active galactic nucleus (AGN…
Detection of the [O I] 63 m emission line from the quasar J2054-0005
Nozomi Ishii, Takuya Hashimoto, Carl Ferkinhoff +23
We report the highest-redshift detection of [O I] 63 m from a luminous quasar, J2054-0005, at based on the Atacama Large Millimeter/sub-millimeter Array Band 9 observat…
ALMA Confirmation of Millimeter Time Variability in the Gamma-Ray Detected Seyfert Galaxy GRS 1734-292
Tomonari Michiyama, Yoshiyuki Inoue, Akihiro Doi +4
GRS 1734-292 is a radio-quiet galaxy, exhibiting neither intense starburst nor jet activities. However, Fermi-LAT detected this object in the GeV band. The origin of non-thermal ac…
The ALMaQUEST Survey XII: Dense Molecular Gas as traced by HCN and HCO in Green Valley Galaxies
Lihwai Lin, Hsi-An Pan, Sara L. Ellison +11
We present ALMA observations of two dense gas tracers, HCN(1-0) and HCO(1-0), for three galaxies in the green valley and two galaxies on the star-forming main sequence with c…
J0107a: A Barred Spiral Dusty Star-forming Galaxy at
Shuo Huang, Ryohei Kawabe, Kotaro Kohno +7
Dusty Star-Forming Galaxies (DSFGs) are amongst the most massive and active star-forming galaxies during the cosmic noon. Theoretical studies have proposed various formation mechan…
The Centimeter to Submillimeter Broad Band Radio Spectrum of the Central Compact Component in A Nearby Type-II Seyfert Galaxy NGC 1068
Tomonari Michiyama, Yoshiyuki Inoue, Akihiro Doi
We analyze all the available Atacama Large Millimeter / submillimeter Array archival data of the nearby Type-II Seyfert galaxy NGC 1068, including new 100 GHz data with the angular…
Nobeyama 45-m CO J=1-0 Observations of Luminous Type 1 AGNs at
Tomonari Michiyama, Ming-Yang Zhuang, Jinyi Shangguan +3
We have performed CO J =1-0 observations of ten galaxies hosting luminous () type 1 active galactic nuclei (AGNs) with the Nobeyama 45-m r…
ALMA detection of parsec-scale blobs at the head of kiloparsec-scale jet in the nearby Seyfert galaxy NGC 1068
Tomonari Michiyama, Yoshiyuki Inoue, Akihiro Doi +1
We present Atacama Large Millimeter/submillimeter Array observations at GHz with arcsec (3 pc) resolution of the kiloparsec-scale jet seen in the nearby Seyfert…
ALMA/ACA CO Survey of the IC 1459 and NGC 4636 Groups: Environmental Effects on the Molecular Gas of Group Galaxies
Bumhyun Lee, Jing Wang, Aeree Chung +30
We present new results of a 12CO(J=1-0) imaging survey using the Atacama Compact Array (ACA) for 31 HI detected galaxies in the IC 1459 and NGC 4636 groups. This is the first CO im…
Multi-wavelength and Multi-CO View of The Minor Merger Driven Star Formation in the Nearby LIRG NGC 3110
Yuka Kawana, Toshiki Saito, Sachiko K. Okumura +12
We present Atacama Large Millimeter/submillimeter Array observations of multiple CO(1-0), CO(1-0), and CO(1-0) lines and 2.9 mm and 1.3 mm continuum emission toward t…
Detection of nitrogen and oxygen in a galaxy at the end of reionization
Ken-ichi Tadaki, Akiyoshi Tsujita, Yoichi Tamura +12
We present observations of [NII] 205 m, [OIII] 88 m and dust emission in a strongly-lensed, submillimeter galaxy (SMG) at , G09.83808, with the Atacama Large Millimete…
Spatially-resolved relation between [CI] - and CO (1-0) in Arp 220
Junko Ueda, Tomonari Michiyama, Daisuke Iono +2
We present 0."3 (114 pc) resolution maps of [CI] - (hereafter [CI] (1-0)) and CO (1-0) obtained toward Arp 220 with the Atacama Large Millimeter/…
Cold Molecular Gas in Merger Remnants. II. The properties of dense molecular gas
Junko Ueda, Daisuke Iono, Min S. Yun +7
We present the 3 mm wavelength spectra of 28 local galaxy merger remnants obtained with the Large Millimeter Telescope. Fifteen molecular lines from 13 different molecular species…
An ACA Survey of [CI] , CO , and Dust Continuum in Nearby U/LIRG
Tomonari Michiyama, Toshiki Saito, Ken-ichi Tadaki +11
We present the results of surveying [CI] , CO , and 630 m dust continuum emission for 36 nearby ultra/luminous infrared galaxies (U/LIRGs) using the B…
Observed CN and HCN intensity ratios exhibit subtle variations in extreme galaxy environments
B. Ledger, C. D. Wilson, T. Michiyama +5
We use both new and archival ALMA data of three energy lines each of CN and HCN to explore intensity ratios in dense gas in NGC 3256, NGC 7469, and IRAS 13120-5453. The HCN (3-2)/H…
VALES VII: Molecular and ionized gas properties in pressure balanced interstellar medium of starburst galaxies at z ~ 0.15
Juan Molina, Edo Ibar, Nicolas Godoy +9
Context. Spatially resolved observations of the ionized and molecular gas are critical for understanding the physical processes that govern the interstellar medium (ISM) in galaxie…
The 300-pc Scale ALMA View of [CI] -, CO =1-0, and 609 m Dust Continuum in A Luminous Infrared Galaxy
Toshiki Saito, Tomonari Michiyama, Daizhong Liu +7
We present high-quality ALMA Band 8 observations of the [CI] - line and 609 m dust continuum emission toward the nearby luminous infrared galaxy (LIRG) IRAS F18293…
ALMA Observations of Multiple-CO and C Lines Toward the Active Galactic Nucleus of NGC 7469: X-Ray-dominated Region Caught in the Act
Takuma Izumi, Dieu D. Nguyen, Masatoshi Imanishi +15
We used the Atacama Large Millimeter/submillimeter Array (ALMA) to map CO( = 1-0), CO( = 2-1), CO( = 3-2), CO( = 2-1), and [CI](-$^3P…
Discovery of a [CI]-faint, CO-bright Galaxy: ALMA Observations of the Merging Galaxy NGC 6052
Tomonari Michiyama, Junko Ueda, Ken-ichi Tadaki +9
We report sensitive [\ion{C}{1}]~-- and CO~=4--3 observations of the nearby merging galaxy NGC 6052 using the Morita (Atacama Compact) Array of ALMA. We det…