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Fragmentation in filamentary molecular clouds
Yanett Contreras, Guido Garay, Jill M. Rathborne +1
Recent surveys of dust continuum emission at sub-mm wavelengths have shown that filamentary molecular clouds are ubiquitous along the Galactic plane. These structures are inhomogen…
Planck cold clumps in the Orionis complex: I. Discovery of an extremely young Class 0 protostellar object and a proto-brown dwarf candidate in a bright rimmed clump PGCC G192.32-11.88
Tie Liu, Qizhou Zhang, Kee-Tae Kim +37
We are performing a series of observations with ground-based telescopes toward Planck Galactic cold clumps (PGCCs) in the Orionis complex in order to systematically investigate…
Sgr B2(N): A bipolar outflow and rotating hot core revealed by ALMA
Aya E. Higuchi, Tetsuo Hasegawa, Kazuya Saigo +2
We present the results of SiO (2-1) and SO2 (12-13) line observations of Sgr B2(N) made with the Atacama Large Millimeter/submillimeter Array (ALMA) at an angular resolution of ~2a…
Far-Infrared Dust Temperatures and Column Densities of the MALT90 Molecular Clump Sample
Andrés E. Guzmán, Patricio Sanhueza, Yanett Contreras +4
We present dust column densities and dust temperatures for young high-mass molecular clumps from the Millimetre Astronomy Legacy Team 90 GHz (MALT90) survey, derived fro…
Chemical evolution of the HC3N and N2H+ molecules in dense cores of the Vela C giant molecular cloud complex
Satoshi Ohashi, Ken'ichi Tatematsu, Kosuke Fujii +5
We have observed the HC3N (J=10-9) and N2H+ (J=1-0) lines toward the Vela C molecular clouds with the Mopra 22 m telescope to study chemical characteristics of dense cores. The int…
ALMA Observations of the IRDC Clump G34.43+00.24 MM3: DNC/HNC Ratio
Takeshi Sakai, Nami Sakai, Kenji Furuya +6
We have observed the clump G34.43+00.24 MM3 associated with an infrared dark cloud in DNC =3--2, HNC =3--2, and NH =3--2 with the Atacama Large Millimeter/s…
Interferometric Observations of High-Mass Star-Forming Clumps with Unusual N2H+/HCO+ Line Ratios
Ian W. Stephens, James M. Jackson, Patricio Sanhueza +4
The Millimetre Astronomy Legacy Team 90 GHz (MALT90) survey has detected high-mass star-forming clumps with anomalous NH/HCO(1-0) integrated intensity ratios that are e…