132 citations · 1.1k across the 46 of their papers we have counts for
47 papers
A Cyanopolyyne-rich but COM-poor Massive Protostar: The First Hot Carbon Chain Chemistry Source G28.28-0.36
Kotomi Taniguchi, Masao Saito, Prasanta Gorai +6
We present molecular emission line data from the massive young stellar object (MYSO) G28.28-0.36 (G28.28) obtained with the Atacama Large Millimeter/submillimeter Array Band 3. Cya…
Velocity Structure and Molecular Formation in Polaris Molecular Cloud
Tomomi Shimoikura, Kazuhito Dobashi, Fumitaka Nakamura +1
We present a wide-field $(60\arcmin \times 30\arcmin)$ study of a dense region within the Polaris Flare, hereafter referred to as the `Polaris molecular cloud', using CO, $^…
Q-band Line Survey Observations toward a Carbon-chain-rich Clump in the Serpens South Region
Kotomi Taniguchi, Fumitaka Nakamura, Sheng-Yuan Liu +17
We have conducted Q-band (30 GHz 50 GHz) line survey observations toward a carbon-chain emission peak in the Serpens South cluster-forming region with the extended Q-band (eQ)…
An ultra wide-band, high-sensitivity Q-band receiver for single-dish telescopes, eQ: rest frequency determination of CCS ( = -) and SO ( = -), and high-redshift CO ( = 1-0) detection
Fumitaka Nakamura, Chau-Ching Chiong, Kotomi Taniguchi +16
We report on the development and commissioning of a new Q-band receiver for the Nobeyama 45-m telescope, covering 30--50 GHz with a receiver noise temperature of about 15 K. We nam…
The Reservoir of the Per-emb-2 Streamer
Kotomi Taniguchi, Jaime E Pineda, Paola Caselli +4
Streamers bring gas from outer regions to protostellar systems and could change the chemical composition around protostars and protoplanetary disks. We have carried out mapping obs…
Chemical Differentiation around Five Massive Protostars Revealed by ALMA -Carbon-Chain Species, Oxygen-/Nitrogen-Bearing Complex Organic Molecules-
Kotomi Taniguchi, Liton Majumdar, Paola Caselli +9
We present Atacama Large Millimeter/submillimeter Array Band 3 data toward five massive young stellar objects (MYSOs), and investigate relationships between unsaturated carbon-chai…
CARMA-NRO Orion Survey: unbiased survey of dense cores and core mass functions in Orion A
Hideaki Takemura, Fumitaka Nakamura, Héctor G. Arce +15
The mass distribution of dense cores is a potential key to understand the process of star formation. Applying dendrogram analysis to the CARMA-NRO Orion CO (=1--0) data,…
Cluster Formation in GGD12-15: Infall Motion with Rotation of the Natal Clump
Tomomi Shimoikura, Kazuhito Dobashi, Naomi Hirano +5
We report results of observations of the GGD12-15 region, where cluster formation is actively taking place, using various molecular emission lines. The C18O (J= 1-0) emission line…
Clump-scale chemistry in the NGC2264-D cluster-forming region
Kotomi Taniguchi, Adele Plunkett, Tomomi Shimoikura +4
We have conducted mapping observations toward the n3 and n5 positions in the NGC\,2264-D cluster-forming region with the Atacama Compact Array (ACA) of the Atacama Large Millimeter…
Optical Properties of Interstellar Dust around the Orion A Molecular Cloud
Hayato Uehara, Kazuhito Dobashi, Shingo Nishiura +2
We have studied optical properties of interstellar dust around the Orion A molecular cloud to investigate the size distribution and the composition of dust grains. Orion A is one o…
The Core Mass Function in the Orion Nebula Cluster Region: What Determines the Final Stellar Masses?
Hideaki Takemura, Fumitaka Nakamura, Shuo Kong +29
Applying dendrogram analysis to the CARMA-NRO CO (=1--0) data having an angular resolution of 8", we identified 692 dense cores in the Orion Nebula Cluster (ONC) r…
Carbon Chain Chemistry in Hot-Core Regions around Three Massive Young Stellar Objects Associated with 6.7 GHz Methanol Masers
Kotomi Taniguchi, Eric Herbst, Liton Majumdar +7
We have carried out observations of CCH (), CHCN (), and three C isotopologues of HCN () toward three massive young stellar objects (MYSOs)…
Cloud structures in M17 SWex : Possible cloud-cloud collision
Shinichi W. Kinoshita, Fumitaka Nakamura, Quang Nguyen-Luong +11
Using wide-field CO () data taken with the Nobeyama 45-m telescope, we investigate cloud structures of the infrared dark cloud complex in M17 with SCIMES. In total, w…
A detailed analysis on the cloud structure and dynamics in Aquila Rift
Tomomi Shimoikura, Kazuhito Dobashi, Yoshiko Hatano +1
We present maps in several molecular emission lines of a 1 square-degree region covering the W40 and Serpens South molecular clouds belonging to the Aquila Rift complex. The observ…
Large-scale molecular gas distribution in the M17 cloud complex: dense gas conditions of massive star formation?
Quang Nguyen-Luong, Fumitaka Nakamura, Koji Sugitani +8
The non-uniform distribution of gas and protostars in molecular clouds is caused by combinations of various physical processes that are difficult to separate. We explore this non-u…
Investigation of Chemical Differentiation among the NGC2264 Cluster-Forming Clumps
Kotomi Taniguchi, Adele Plunkett, Eric Herbst +4
We have carried out mapping observations of molecular emission lines of HCN and CHOH toward two massive cluster-forming clumps, NGC2264-C and NGC2264-D, using the Nobey…
Nobeyama 45-m mapping observations toward nearby molecular clouds, Orion A, Aquila Rift, and M17: Project overview
Fumitaka Nakamura, Shun Ishii, Kazuhito Dobashi +16
We carried out mapping observations toward three nearby molecular clouds, Orion A, Aquila Rift, and M17, using a new 100 GHz receiver, FOREST, on the Nobeyama 45-m telescope. In th…
First clear detection of the CCS Zeeman splitting toward the pre-stellar core, Taurus Molecular Cloud-1
Fumitaka Nakamura, Seiji Kameno, Takayoshi Kusune +4
We report a first clear detection of the Zeeman splitting of a CCS emission line at 45 GHz toward a nearby prestellar dense filament, Taurus Molecular Cloud-1. We observed HCN…
Nobeyama 45 m Mapping Observations toward Orion A. II. Classification of cloud structures and variation of the CO/CO abundance ratio due to far-UV Radiation
Shun Ishii, Fumitaka Nakamura, Yoshito Shimajiri +4
We present results of the classification of cloud structures toward the Orion A Giant Molecular Cloud based on wide-field CO ( = 1--0), CO ( = 1-0), and C$^{18}…
Near-Infrared Imaging Polarimetry toward M17 SWex
Koji Sugitani, Fumitaka Nakamura, Tomomi Shimoikura +7
We conducted near-infrared (JHKs) imaging polarimetry toward the infrared dark cloud (IRDC) M17 SWex, including almost all of the IRDC filaments as well as its outskirts, with the…
Nobeyama 45-m Mapping Observations toward Orion A. III. Multi-Line Observations toward an Outflow-shocked Region, OMC-2 FIR
Fumitaka Nakamura, Shuri Oyamada, Sachiko Okumura +13
We present the results of mapping observations toward an outflow-shocked region, OMC-2 FIR 4 using the Nobeyama 45-m telescope. We observed the area in CO (), C$^{18}…
Discovery of CCS Velocity-Coherent Substructures in the Taurus Molecular Cloud 1
Kazuhito Dobashi, Tomomi Shimoikura, Tetsu Ochiai +4
We present the results of mapping observations toward a nearby starless filamentary cloud, the Taurus Molecular Cloud 1 (TMC-1), in the CCS(JN=43-32, 45.379033 GHz) emission line,…
A survey of molecular cores in M17 SWex
Tomomi Shimoikura, Kazuhito Dobashi, Asha Hirose +3
A survey of molecular cores covering the infrared dark cloud known as the M17 southwest extension (M17 SWex) has been carried out with the 45 m Nobeyama Radio Telescope. Based on t…
Cloud-cloud collision in the DR 21 cloud as a trigger of massive star formation
Kazuhito Dobashi, Tomomi Shimoikura, Shou Katakura +2
We report on a possible cloud-cloud collision in the DR 21 region, which we found through molecular observations with the Nobeyama 45-m telescope. We mapped an area of 8'x12' aroun…