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Astrochemical Properties of Planck Cold Clumps
Ken'ichi Tatematsu, Tie Liu, Satoshi Ohashi +25
We observed thirteen Planck cold clumps with the James Clerk Maxwell Telescope/SCUBA-2 and with the Nobeyama 45 m radio telescope. The NH distribution obtained with the Nob…
Evolutionary status of isolated B[e] stars
Chien-De Lee, W. P. Chen, S. Y. Liu
Aims. We study a sample of eight B[e] stars with uncertain evolutionary status to shed light on the origin of their circumstellar dust. Methods. We performed a diagnostic analysis…
Star formation laws in both Galactic massive clumps and external galaxies: An extensive study with dust continuum, HCN (4-3), and CS (7-6)
Tie Liu, Kee-Tae Kim, Hyunju Yoo +20
We observed 146 Galactic clumps in HCN (4-3) and CS (7-6) with the Atacama Submillimeter Telescope Experiment (ASTE) 10-m telescope. A tight linear relationship between star format…
Discovery of an extremely wide-angle bipolar outflow in AFGL 5142
Tie Liu, Qizhou Zhang, Kee-Tae Kim +12
Most bipolar outflows are associated with individual young stellar objects and have small opening angles. Here we report the discovery of an extremely wide-angle (180$\arcdeg…
A Hot and Massive Accretion Disk around the High-Mass Protostar IRAS 20126+4104
Huei-Ru Vivien Chen, Eric Keto, Qizhou Zhang +3
We present new spectral line observations of the CH3CN molecule in the accretion disk around the massive protostar IRAS 20126+4104 with the Submillimeter Array that for the first t…