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A survey of CCS, HC3N, HC5N, and NH3 toward dark cloud cores and their production chemistry
Survey observations of CCS (J N = 4 3 -3 2 , J N = 2 1 -1 0 ), HC 3 N (J = 5-4), HC 5 N (J = 9-8, J = 17-16), and NH 3 (J, K = 1, 1) were carried out toward 49 dark cloud cores to examine theExpand
The Atacama Submillimeter Telescope Experiment (ASTE)
ASTE (Atacama Submillimeter Telescope Experiment) is a project to install and operate a 10-m submillimeter telescope in the high altitude site (4,800 m) in Atacama desert, northern Chile. The projectExpand
Abundant Carbon-Chain Molecules toward the Low-Mass Protostar IRAS 04368+2557 in L1527
We have detected the high-excitation lines of carbon-chain molecules such as C4H2 (J ¼ 100;10Y90;9), C4 H( N ¼ 9Y8, F1, F2), l-C3H2 (41,3Y31,2), and CH3CCH (J ¼ 5Y4, K ¼ 2) toward a low-massExpand
A 8.8-50 GHz Complete Spectral Line Survey toward TMC-1: I. Survey Data.
We completed the first spectral line survey toward a cold, dark cloud TMC-1 (cyanopolyyne peak) in a frequency range between 8.8 and 50.0 GHz by the 45-m radio telescope of Nobeyama RadioExpand
Abundances of HCN and HNC in Dark Cloud Cores
We have determined the abundances of HCN and HNC toward 19 nearby dark cloud cores by observations of optically thin H13CN (J = 1-0) and HN13C (J = 1-0) lines. The column density of HCN is found toExpand
DISCOVERY OF THE SECOND WARM CARBON-CHAIN-CHEMISTRY SOURCE, IRAS15398 – 3359 IN LUPUS
We have conducted a search for carbon-chain molecules toward 16 protostars with the Mopra 22 m and Nobeyama 45 m telescopes, and have detected high excitation lines from several species, such as C4HExpand
A Molecular Line Observation toward Massive Clumps Associated with Infrared Dark Clouds
We have surveyed the N2H+ -->J = 1?0, HC3N -->J = 5?4, CCS -->JN = 43?32, NH3 (J, K) = (1, 1), (2, 2), (3, 3), and CH3OH -->J = 7?6 lines toward the 55 massive clumps associated with infrared darkExpand
DEUTERATED MOLECULES IN WARM CARBON CHAIN CHEMISTRY: THE L1527 CASE
We have conducted millimeter-wave observations of deuterated species of various carbon-chain molecules toward a low-mass star-forming region, L1527, which shows extraordinary richness of carbon-chainExpand
Molecular Cloud Cores in the Orion A Cloud. I. Nobeyama CS (1--0) Survey
A first high-resolution survey of molecular cloud cores in the Orion A giant molecular cloud is reported. We identified 125 molecular cloud cores from an analysis of the spatial and velocityExpand
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