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Article
Four annular structures in a protostellar disk less than 500,000 years old
Annular structures (rings and gaps) in disks around pre-main-sequence stars have been detected in abundance towards class II protostellar objects that are approximately 1,000,000 years old1. These structures are ...
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Article
Spatially resolved magnetic field structure in the disk of a T Tauri star
Measurements of polarized 1.25-mm continuum emission from the accretion disk of the T Tauri star HL Tau show that the magnetic field inside the disk cannot be dominated by a vertical component, and that a pure...
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Chapter and Conference Paper
Sub-Arcsecond Millimeter Imaging of Disks and Envelopes: Probing the Density Structure
Sub-arcsecond observations at millimeter wavelengths are providing spectacular images necessary to study directly the circumstellar disks and inner envelopes of young stellar objects. The millimeter data probe...
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Chapter and Conference Paper
Sub-Arcsecond Millimeter Imaging of Disks and Envelopes: Probing the Density Structure
Sub-arcsecond observations at millimeter wavelengths are providing spectacular images necessary to study directly the circumstellar disks and inner envelopes of young stellar objects. The millimeter data probe...
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Article
Formation of 'bullets' by hydrodynamical instabilities in stellar outflows
IMAGES of young stars1 and supernova remnants2 often reveal small, high-density knots of material which are interpreted as 'bullets' ejected by the source and propagating at supersonic speeds into the surrounding...
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Chapter and Conference Paper
Synthesis Imaging of the DR21(OH) Protocluster
Owens Valley Millimeter Wave Interferometer observations at 6.″9 × 7.″7 resolution of 2.7 mm continuum and J = 1 → 0 C18O emission at velocity resolutions of 2.7 and 0.27 km s−1 have been made of the DR21(OH) mol...
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Chapter and Conference Paper
Sonic linewidths in warm clouds?
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Chapter
High Resolution Observations with the Owens Valley Millimeter Wave Interferometer
A variety of star-formation regions have been observed at high resolution using the Millimeter Wave Interferometer of the Owens Valley Radio Observatory. Here we describe some of the more recent results and in...