48 citations · 613 across the 41 of their papers we have counts for
33 papers · 1 filter
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…
The SOFIA Massive (SOMA) Star Formation Q-band follow-up I. Carbon-chain chemistry of intermediate-mass protostars
Kotomi Taniguchi, Prasanta Gorai, Jonathan C. Tan +10
Evidence for similar chemical characteristics around low- and high-mass protostars has been found: in particular, a variety of carbon-chain species and complex organic molecules (C…
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)…
Digging into the Interior of Hot Cores with ALMA (DIHCA). IV. Fragmentation in High-mass Star-Forming Clumps
Kosuke Ishihara, Patricio Sanhueza, Fumitaka Nakamura +10
Fragmentation contributes to the formation and evolution of stars. Observationally, high-mass stars are known to form multiple-star systems, preferentially in cluster environments.…
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…
Observations of high-order multiplicity in a high-mass stellar protocluster
Shanghuo Li, Patricio Sanhueza, Henrik Beuther +13
The dominant mechanism forming multiple stellar systems in the high-mass regime (M 8 ) remained unknown because direct imaging of multiple protostellar s…
Large-Scale Mapping Observations of DCN and DCO toward Orion KL
Kotomi Taniguchi, Prathap Rayalacheruvu, Teppei Yonetsu +14
We present emission maps (1.5'1.5' scale, corresponding to 0.18 pc) of the DCN () and DCO () lines in the 2 mm band toward the Orion KL region obtained wi…
Digging into the Interior of Hot Cores with ALMA: Spiral Accretion into the High-mass Protostellar Core G336.01-0.82
Fernando Olguin, Patricio Sanhueza, Huei-Ru Vivien Chen +9
We observed the high-mass star-forming core G336.01-0.82 at 1.3 mm and 0.05'' (~150 au) angular resolution with the Atacama Large Millimeter/submillimeter Array (ALMA) as part of t…
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…
Digging into the Interior of Hot Cores with ALMA (DIHCA). III: The Chemical Link between NHCHO, HNCO, and HCO
Kotomi Taniguchi, Patricio Sanhueza, Fernando A. Olguin +8
We have analyzed the NHCHO, HNCO, HCO, and CHCN (CHCN) molecular lines at an angular resolution of obtained by the Atacama Large Millime…
Carbon-Chain Chemistry in the Interstellar Medium
Kotomi Taniguchi, Prasanta Gorai, Jonathan C. Tan
The presence of carbon-chain molecules in the interstellar medium (ISM) has been known since the early 1970s and such species have been identified to date, making up $\sim 4…
Vibrationally-excited Lines of HCN Associated with the Molecular Disk around the G24.78+0.08 A1 Hyper-compact H Region
Kotomi Taniguchi, Kei E. I. Tanaka, Yichen Zhang +7
We have analyzed Atacama Large Millimeter/submillimeter Array Band 6 data of the hyper-compact H region G24.78+0.08 A1 (G24 HC H) and report the detection…
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…
Chemical compositions in the vicinity of protostars in Ophiuchus
Kotomi Taniguchi, Liton Majumdar, Adele Plunkett +6
We have analyzed Atacama Large Millimeter/submillimeter Array (ALMA) Cycle 4 Band 6 data toward two young stellar objects (YSOs), Oph-emb5 and Oph-emb9, in the Ophiuchus star-formi…
Carbon-Chain Chemistry vs. Complex-Organic-Molecule Chemistry in Envelopes around Three Low-Mass Young Stellar Objects in the Perseus Region
Kotomi Taniguchi, Liton Majumdar, Shigehisa Takakuwa +4
We have analyzed ALMA Cycle 5 data in Band 4 toward three low-mass young stellar objects (YSOs), IRAS 03235+3004 (hereafter IRAS 03235), IRAS 03245+3002 (IRAS 03245), and IRAS 0327…
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)…
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…
C Isotopic Fractionation of CCH in Two Starless Cores: L1521B and L134N
Kotomi Taniguchi, Eric Herbst, Hiroyuki Ozeki +1
We have carried out observations of CCH and its two C isotopologues, CCH and CCH, in the 84 - 88 GHz band toward two starless cores, L1521B and L134N (L183), u…
Nobeyama 45-m Cygnus X CO Survey: II Physical Properties of Clumps
Tatsuya Takekoshi, Shinji Fujita, Atsushi Nishimura +6
We report the statistical physical properties of the CO() clumps present in a prominent cluster-forming region, Cygnus X, using the dataset obtained by the Nobeyama 4…
Cyanopolyyne Chemistry around Massive Young Stellar Objects
Kotomi Taniguchi, Eric Herbst, Paola Caselli +3
Recent radio astronomical observations have revealed that HCN, the second shortest cyanopolyyne (HCN), is abundant around some massive young stellar objects (MYSOs),…
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 centrally concentrated sub-solar mass starless core in the Taurus L1495 filamentary complex
Kazuki Tokuda, Kengo Tachihara, Kazuya Saigo +14
The formation scenario of brown dwarfs is still unclear because observational studies to investigate its initial condition are quite limited. Our systematic survey of nearby low-ma…
Survey Observations to Study Chemical Evolution from High-Mass Starless Cores to High-Mass Protostellar Objects II. HCN and NH
Kotomi Taniguchi, Masao Saito, T. K. Sridharan +1
We have carried out survey observations of molecular emission lines from HCN, NH, CCS, and cyclic-CH in the 8194 GHz band toward 17 high-mass starl…