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Mapping Observations of DNC and HN^13C in Dark Cloud Cores
T. Hirota, M. Ikeda, S. Yamamoto
We present results of mapping observations of the DNC, HN^13C, and H^13CO^+ lines (J=1-0) toward 4 nearby dark cloud cores, TMC-1, L1512, L1544, and L63, along with observations of…
L1521E: A Starless Core in the Early Evolutionary Stage ?
T. Hirota, T. Ito, S. Yamamoto
We have studied the physical and chemical properties of a quiescent starless core L1521E with various molecular lines. It is found that there exists a compact dense core traced by…
Atomic Carbon and CO Isotope Emission in the Vicinity of DR15
T. Oka, S. Yamamoto, M. Iwata +17
We present observations of the 3P1-3P0 fine structure transition of atomic carbon [CI], the J=3-2 transition of CO, as well as of the J=1-0 transitions of 13CO and C18O toward DR15…
Large-scale mapping observations of the CI(3P1-3P0) and CO(J=3-2) lines toward the Orion A molecular cloud
Masafumi Ikeda, Hiroyuki Maezawa, Tetsuya Ito +14
Large scale mapping observations of the 3P1-3P0 fine structure transition of atomic carbon (CI, 492 GHz) and the J=3-2 transition of CO (346 GHz) toward the Orion A molecular cloud…
The ortho-to-para ratio of ammonia in the L1157 outflow
Tomofumi Umemoto, Hitomi Mikami, Satoshi Yamamoto +1
We have measured the ortho-to-para ratio of ammonia in the blueshifted gas of the L1157 outflow by observing the six metastable inversion lines from (J, K) = (1, 1) to (6, 6). The…