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A Molecular Line Observation toward Massive Clumps Associated with Infrared Dark Clouds
Takeshi Sakai, Nami Sakai, Kazuhisa Kamegai +4
We have surveyed the N2H+ J=1-0, HC3N J=5-4, CCS J_N=4_3-3_2, NH3 (J, K) = (1, 1), (2, 2), (3, 3), and CH3OH J=7-6 lines toward the 55 massive clumps associated with infrared dark…
VERA 22 GHz fringe search survey
L. Petrov, T. Hirota, M. Honma +3
This paper presents results of a survey search for bright compact radio sources at 22 GHz with the VERA radio-interferometer. Each source from a list of 2494 objects was observed i…
Molecular Line Observations of a Carbon-Chain-Rich Core L492
Tomoya Hirota, Satoshi Yamamoto
We report on molecular abundances and distributions in a starless dense core L492. We have found that the abundances of carbon-chain molecules such as CCS, CS, HCN, HC$…
Multi-epoch VERA Observations of H2O masers in OH 43.8-0.1
M. Honma, T. Bushimata, Y. K. Choi +33
We report on the multi-epoch observations of H2O maser emission in star forming region OH 43.8-0.1 carried out with VLBI Exploration of Radio Astrometry (VERA). The large-scale mas…
Observations of H2O maser sources in Orion-Monoceros Molecular Clouds with VERA
T. Hirota, VERA project team
We present results of phase-referencing VLBI observations of water maser sources in Orion-Monoceros Molecular Clouds with VERA (VLBI Exploration of Radio Astrometry), which is newl…
Molecular Line Observations of Carbon-Chain-Producing Regions L1495B and L1521B
Tomoya Hirota, Hiroyuki Maezawa, Satoshi Yamamoto
We present the first comprehensive study on physical and chemical properties of quiescent starless cores L1495B and L1521B, which are known to be rich in carbon-chain molecules lik…