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PROSAC: A Submillimeter Array Survey of Low-Mass Protostars. I. Overview of Program: Envelopes, Disks, Outflows and Hot Cores
Jes K. Jorgensen, Tyler L. Bourke, Philip C. Myers +8
This paper presents a large spectral line and continuum survey of 8 deeply embedded, low-mass protostellar cores using the Submillimeter Array. Each source was observed in high exc…
The Spitzer c2d Survey of Nearby Dense Cores: III: Low Mass Star Formation in a Small Group, L1251B
Jeong-Eun Lee, James Di Francesco, Shih-Ping Lai +8
We present a comprehensive study of a low-mass star-forming region,L1251B, at wavelengths from the near-infrared to the millimeter. L1251B, where only one protostar, IRAS 22376+745…
Abundances of Molecular Species in Barnard 68
James Di Francesco, Michiel R. Hogerheijde, William J. Welch +1
Abundances for 5 molecules (C18O, CS, NH3, H2CO, and C3H2) and 1 molecular ion (N2H+) and upper limits for the abundances of 1 molecule (13CO) and 1 molecular ion (HCO+) are derive…
Limits on Radio Continuum Emission from a Sample of Candidate Contracting Starless Cores
D. W. A. Harvey, D. J. Wilner, J. Di Francesco +3
We used the NRAO Very Large Array to search for 3.6 cm continuum emission from embedded protostars in a sample of 8 nearby ``starless'' cores that show spectroscopic evidence for i…
HST/NICMOS Imaging Survey of the Ophiuchus (Lynds 1688) Cluster
Lori E. Allen, Philip C. Myers, James Di Francesco +3
We present a catalogue of near-infrared photometry of young stars associated with the Ophiuchus molecular cloud, based on observations made with the Hubble Space Telescope NICMOS-3…
Infall, Outflow, Rotation, and Turbulent Motions of Dense Gas within NGC 1333 IRAS 4
James Di Francesco, Philip C. Myers, David J. Wilner +2
Millimeter wavelength observations are presented of NGC 1333 IRAS 4, a group of highly-embedded young stellar objects in Perseus, that reveal motions of infall, outflow, rotation,…
A High Resolution Study of the Slowly Contracting, Starless Core L1544
Jonathan P. Williams, Philip C. Myers, David J. Wilner +1
We present interferometric observations of N2H+(1--0) in the starless, dense core L1544 in Taurus. Red-shifted self-absorption, indicative of inward motions, is found toward the ce…