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First Interferometric Images of the 36 GHz Methanol Masers in the DR21 Complex
Vincent L. Fish, Talitha C. Muehlbrad, Preethi Pratap +4
Class I methanol masers are believed to be produced in the shock-excited environment around star-forming regions. Many authors have argued that the appearance of various subsets of…
IRAS 20050+2720: Anatomy of a young stellar cluster
H. M. Guenther, S. J. Wolk, R. A. Gutermuth +4
We present early results of our multiwavelength study of the star forming region IRAS 20050+2720. While we use X-rays and IR to classify young stellar objects, the optical data can…
The Spitzer c2d Survey of Nearby Dense Cores. IX. Discovery of a Very Low Luminosity Object Driving a Molecular Outflow in the Dense Core L673-7
Michael M. Dunham, Neal J. Evans, Tyler L. Bourke +3
We present new infrared, submillimeter, and millimeter observations of the dense core L673-7 and report the discovery of a low-luminosity, embedded Class 0 protostar driving a mole…
The Initial Conditions of Clustered Star Formation III. The Deuterium Fractionation of the Ophiuchus B2 Core
R. K. Friesen, J. Di Francesco, P. C. Myers +4
We present N2D+ 3-2 (IRAM) and H2D+ 1_11 - 1_10 and N2H+ 4-3 (JCMT) maps of the small cluster-forming Ophiuchus B2 core in the nearby Ophiuchus molecular cloud. In conjunction with…
Extreme Active Molecular Jets in L1448C
Naomi Hirano, Paul P. T. Ho, Sheng-Yuan Liu +3
The protostellar jet driven by L1448C was observed in the SiO J=8-7 and CO J=3-2 lines and 350 GHz dust continuum at ~1" resolution with the Submillimeter Array (SMA). A narrow jet…
L1448 IRS2E: A candidate first hydrostatic core
Xuepeng Chen, Hector G. Arce, Qizhou Zhang +4
Intermediate between the prestellar and Class 0 protostellar phases, the first core is a quasi-equilibrium hydrostatic object with a short lifetime and an extremely low luminosity.…