A Three-Position Spectral Line Survey of Sagittarius B2 between 218 and 263 GHz. II. Data Analysis
- A. Nummelin, P. Bergman, S. Saito
- Physics
- 1 May 2000
We present an analysis of the data from our Swedish-ESO Submillimetre Telescope molecular line survey in the 1.3 mm band of the N, M, and NW positions in the Sgr B2 molecular cloud. The line…
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 Radio…
A Three-Position Spectral Line Survey of Sagittarius B2 between 218 and 263 GHz. I. The Observational Data
- A. Nummelin, P. Bergman, S. Saito
- Physics
- 1 August 1998
We have surveyed the frequency band 218.30-263.55 GHz toward the core positions N and M and the quiescent cloud position NW in the Sgr B2 molecular cloud using the Swedish-ESO Submillimetre…
Rotational spectrum of the CCS radical studied by laboratory microwave spectroscopy and radio-astronomical observations
- S. Yamamoto, S. Saito, M. Ohishi
- Physics, Environmental Science
- 1 September 1990
The rotational spectral lines of the CCS radical and its isotopic species, CC(S-34), (C-13)CS, and C(C-13)S, have been observed in the laboratory, and the J(N) = 4(3)-3(2), J(N) = 2(1)-1(0), and J(N)…
Observations of NH2D toward Dark Molecular Clouds
- S. Saito, H. Ozeki, M. Ohishi, S. Yamamoto
- Environmental Science, Physics
- 20 May 2000
The 1-1 transition of NH2D at 110.1536 GHz was surveyed toward 16 cores of high ammonia abundance in 14 cold dark clouds and was detected toward eight cloud cores, L1448, B1, L1489N, L1551N, L1641N,…
Laboratory observation of the 3P1-3P0 transition of the neutral carbon atom by submillimeter-wave absorption spectroscopy
- S. Yamamoto, S. Saito
- Physics
- 1 April 1991
The 3P1-3P0 transitions of the neutral C-12 and C-13 atoms are observed by laboratory microwave spectroscopy. The carbon atom is produced by discharging a gaseous mixture of CO and He at the liquid…
Atomic Carbon and CO Isotope Emission in the Vicinity of DR 15
- T. Oka, S. Yamamoto, J. Inatani
- Physics, Environmental Science
- 30 May 2001
We present observations of the 3P1-3P0 fine-structure transition of atomic carbon [C I], the J = 3-2 transition of CO, and the J = 1-0 transitions of 13CO and C18O toward DR 15, an H II region…
Distribution of the [C I] Emission in the ρ Ophiuchi Dark Cloud
- K. Kamegai, Masafumi Ikeda, M. Ohishi
- Physics
- 20 May 2003
The 3P1-3P0 fine-structure line of the neutral carbon atom ([C I]) has been mapped over the 1.°8 × 1.°3 area of the L1688 cloud in the ρ Ophiuchi region with the Mount Fuji submillimeter-wave…
Laboratory and astronomical detection of the cyclic C3H radical
- S. Yamamoto, S. Saito, A. Murakami
- Physics, Chemistry
- 1 November 1987
Laboratory and astronomical detections of the rotational spectrum of the cyclic C/sub 3/H radical are reported, and the formation process by ion-molecular reactions is discussed. Laboratory…
Observations of Cumulene Carbenes,H2CCCC and H2CCC,in TMC-1
- K. Kawaguchi, N. Kaifu, W. Irvine
- Physics, Chemistry
- 1 August 1991
Attention is given to the carbon chain molecule H2CCCC, detected in the dark cloud TMC-1 for the first time in the course of a molecular line survey using the Nobeyama 45-m telescope. From nine…
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