201 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- National Astronomical Observatory of JapanJP54 papers
- The University of TokyoJP38 papers
- The Graduate University for Advanced Studies, SOKENDAIJP22 papers
- Nagoya UniversityJP18 papers
- Institute of Astronomy and Astrophysics, Academia SinicaTW15 papers
- Institute of Space and Astronautical ScienceJP15 papers
- Osaka Prefecture UniversityJP15 papers
- Japan Aerospace Exploration AgencyJP14 papers
- University of TsukubaJP14 papers
- Astronomical ObservatoryRS11 papers
- Kagoshima UniversityJP11 papers
- Centre National de la Recherche ScientifiqueFR9 papers
36 papers · 1 filter
Molecular absorption lines toward the Galactic ISM detected at 89 GHz with VLBI
Keisuke Nakashima, Hiroshi Imai, Youngjoo Yun
As the first step to explore the Galactic foreground interstellar medium (ISM) with high angular resolution, we investigated the detectability of molecular absorption lines with ve…
Nobeyama Survey of Inward Motions toward Cores in Orion Identified by SCUBA-2
Ken'ichi Tatematsu, You-Ting Yeh, Naomi Hirano +28
In this study, 36 cores (30 starless and 6 protostellar) identified in Orion were surveyed to search for inward motions. We used the Nobeyama 45 m radio telescope, and mapped the c…
Molecular Cloud Cores with High Deuterium Fractions: Nobeyama Mapping Survey
Ken'ichi Tatematsu, Gwanjeong Kim, Tie Liu +35
We present the results of on-the-fly mapping observations of 44 fields containing 107 SCUBA-2 cores in the emission lines of molecules, NH, HCN, and CCS at 8294 GHz…
Giant Molecular Cloud Formation at the Interface of Colliding Supershells in the Large Magellanic Cloud
Kosuke Fujii, Norikazu Mizuno, J. R. Dawson +8
We investigate the Hi envelope of the young, massive GMCs in the star-forming regions N48 and N49, which are located within the high column density Hi ridge between two kpc-scale s…
Triggered high-mass star formation in the HII region W28A2: A cloud-cloud collision scenario
Katsuhiro Hayashi, Satoshi Yoshiike, Rei Enokiya +15
We report on a study of the high-mass star formation in the the HII region W28A2 by investigating the molecular clouds extended over ~5-10 pc from the exciting stars using the 12CO…
ALMA ACA and Nobeyama observations of two Orion cores in deuterated molecular lines
Ken'ichi Tatematsu, Tie Liu, Gwanjeong Kim +25
We mapped two molecular cloud cores in the Orion A cloud with the ALMA ACA 7-m Array and with the Nobeyama 45-m radio telescope. These cores have bright ND emission in sing…
The Fifth Candidate for an Intermediate-mass Black Hole in the Galactic Center
Shunya Takekawa, Tomoharu Oka, Yuhei Iwata +2
We report the results of high-resolution molecular line observations of the high-velocity compact cloud HCN-0.085-0.094 with the Atacama Large Millimeter/submillimeter Array. The H…
Cloud-cloud collisions in the common foot point of molecular loops 1 and 2 in the Galactic Center
Rei Enokiya, Kazufumi Torii, Yasuo Fukui
Recent large-area, deep CO surveys in the Galactic disk have revealed the formation of ~50 high-mass stars or clusters triggered by cloud-cloud collisions (CCCs). Although the Gala…
CO Multi-line Imaging of Nearby Galaxies (COMING): VI. Radial variations in star formation efficiency
Kazuyuki Muraoka, Kazuo Sorai, Yusuke Miyamoto +25
We examined radial variations in molecular-gas based star formation efficiency (SFE), which is defined as star formation rate per unit molecular gas mass, for 80 galaxies selected…
CO Outflow Survey of 68 Very Low Luminosity Objects: a Search for Proto-Brown Dwarf Candidates
Gwanjeong Kim, Chang Won Lee, Gopinathan Maheswar +5
We present the results of a systematic search for molecular outflows in 68 Very Low Luminosity Objects (VeLLOs) from single-dish observations in CO isotopologues which find 16 VeLL…
CO Multi-line Imaging of Nearby Galaxies (COMING). VII. Fourier decomposition of molecular gas velocity fields and bar pattern speed
Dragan Salak, Yuto Noma, Kazuo Sorai +24
The CO velocity fields of a sample of 20 nearby spiral galaxies, selected from the CO Multi-line Imaging of Nearby Galaxies (COMING) legacy project of No…
Indication of Another Intermediate-mass Black Hole in the Galactic Center
Shunya Takekawa, Tomoharu Oka, Yuhei Iwata +2
We report the discovery of molecular gas streams orbiting around an invisible massive object in the central region of our Galaxy, based on the high-resolution molecular line observ…
Properties of Hi-GAL clumps in the inner Galaxy]{The Hi-GAL compact source catalogue. I. The physical properties of the clumps in the inner Galaxy ()
D. Elia, S. Molinari, E. Schisano +83
Hi-GAL is a large-scale survey of the Galactic plane, performed with Herschel in five infrared continuum bands between 70 and 500 m. We present a band-merged catalogue of spatia…
High-mass star formation possibly triggered by cloud-cloud collision in the HII region RCW 34
Katsuhiro Hayashi, Hidetoshi Sano, Rei Enokiya +12
We report a possibility that the high-mass star located in the HII region RCW 34 was formed by a triggering induced by a collision of molecular clouds. Molecular gas distributions…
Triggered O star formation in M20 via cloud-cloud collision: Comparisons between high-resolution CO observations and simulations
Kazufumi Torii, Yusuke Hattori, Keisuke Hasegawa +9
High-mass star formation is one of the top-priority issues in astrophysics. Recent observational studies are revealing that cloud-cloud collisions may play a role in high-mass star…
Spatially resolved CO SLED of the Luminous Merger Remnant NGC 1614 with ALMA
Toshiki Saito, Daisuke Iono, Cong K. Xu +13
We present high-resolution (1".0) Atacama Large Millimeter/submillimeter Array (ALMA) observations of CO (1-0) and CO (2- 1) rotational transitions toward the nearby IR-luminous me…
The interstellar medium in Andromeda's dwarf spheroidal galaxies: II. Multi-phase gas content and ISM conditions
Ilse De Looze, Maarten Baes, Diane Cormier +11
We make an inventory of the interstellar medium material in three low-metallicity dwarf spheroidal galaxies of the Local Group (NGC147, NGC185 and NGC205). Ancillary HI, CO, Spitze…
A Multi-Line Ammonia Survey of the Galactic Center Region with the Tsukuba 32-m Telescope - I. Observations and Data
Hitoshi Arai, Makoto Nagai, Shinji Fujita +22
We present survey data of the NH3 (J, K) = (1, 1)--(6, 6) lines, simultaneously observed with the Tsukuba 32-m telescope, in the main part of the central molecular zone of the Gala…
Investigating the Relation between CO (3-2) and Far Infrared Luminosities for Nearby Merging Galaxies Using ASTE
Tomonari Michiyama, Daisuke Iono, Kouichiro Nakanishi +10
We present the new single dish CO (3-2) emission data obtained toward 19 early stage and 7 late stage nearby merging galaxies using the Atacama Submillimeter Telescope Experiment (…
CO Multi-line Imaging of Nearby Galaxies (COMING): I. Physical properties of molecular gas in the barred spiral galaxy NGC 2903
Kazuyuki Muraoka, Kazuo Sorai, Nario Kuno +16
We present simultaneous mappings of J=1-0 emission of 12CO, 13CO, and C18O molecules toward the whole disk (8' x 5' or 20.8 kpc x 13.0 kpc) of the nearby barred spiral galaxy NGC 2…
High-mass star formation triggered by collision between CO filaments in N159 West in the Large Magellanic Cloud
Yasuo Fukui, Ryohei Harada, Kazuki Tokuda +20
We have carried out 13CO(J=2-1) observations of the active star-forming region N159 West in the LMC with ALMA. We have found that the CO distribution at a sub-pc scale is highly el…
Catalog of dense cores in the Orion A giant molecular cloud
Yoshito Shimajiri, Y. Kitamura, F. Nakamura +8
We present Orion A giant molecular cloud core catalogs, which are based on 1.1 mm map with an angular resolution of 36 arcsec (sim 0.07 pc) and C18O (1-0) data with an angular reso…
CO emissions from optically selected galaxies at z~0.1-0.2: Tight anti-correlation between molecular gas fraction and 4000 Åbreak strength
Kana Morokuma-Matsui, Junichi Baba, Kazuo Sorai +1
We performed 12CO(J=1-0) (hereafter, CO) observations towards 12 normal star-forming galaxies with stellar mass of Mstar=10^10.6-10^11.3 Msun at z=0.1-0.2 with the 45-m telescope a…
Dense Molecular Clumps associated with the LMC Supergiant Shells LMC 4 \& LMC 5
Kosuke Fujii, Tetsuhiro Minamidani, Norikazu Mizuno +14
We investigate the effects of Supergiant Shells (SGSs) and their interaction on dense molecular clumps by observing the Large Magellanic Cloud (LMC) star forming regions N48 and N4…