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The Dynamics of Dense Cores in the Perseus Molecular Cloud II: the Relationship between Dense Cores and the Cloud
(Institute of Physics Publishing, Inc., 2010)
We utilize the extensive datasets available for the Perseus molecular cloud to analyze the relationship between the kinematics of small-scale dense cores and the larger structures in which they are embedded. The kinematic ...
A Reassessment of the Kinematics of PV Cephei Based on Accurate Proper Motion Measurements
(Universidad Nacional Autónoma de México, 2010)
We present two Very Large Array observations of the pre-main-sequence star PV Cephei, taken with a separation of 10.5 years. These data show that the proper motions of this star are \(\mu_{\alpha} = +10.9 \pm 3.0 \ mas \ ...
Quantum Theory of Molecular Collisions in a Magnetic Field: Efficient Calculations Based on the Total Angular Momentum Representation
(American Institute of Physics, 2010)
An efficient method is presented for rigorous quantum calculations of atom-molecule and molecule-molecule collisions in a magnetic field. The method is based on the expansion of the wavefunction of the collision complex ...
Cold N + NH Collisions in a Magnetic Trap
(American Physical Society, 2011)
We present an experimental and theoretical study of atom-molecule collisions in a mixture of cold, trapped N atoms and NH molecules at a temperature of ∼600 mK. We measure a small N + NH trap loss rate coefficient of ...
Comparative Analysis and Variability of the Jovian X‐Ray Spectra Detected by the Chandra and XMM‐Newton Observatories
(American Geophysical Union, 2010)
Expanding upon recent work, a more comprehensive spectral model based on charge exchange induced X‐ray emission by ions precipitating into the Jovian atmosphere is used to provide new understanding of the polar auroras. ...
Collisions of Trapped Molecules With Slow Beams
(American Physical Society, 2010)
We present a theoretical study of molecular-trap loss induced by collisions with slow atomic beams based on an explicit analysis of collision kinematics in the laboratory frame and a rigorous quantum description of ...
Isotope Effects in Complex Scattering Lengths for He Collisions With Molecular Hydrogen
(American Physical Society, 2010)
We examine the effect of theoretically varying the collision-system reduced mass in collisions of He with vibrationally excited molecular hydrogen and observe zero-energy resonances for select atomic “hydrogen” masses less ...
rf-Field-Induced Feshbach Resonances
(American Physical Society, 2010)
A rigorous quantum theory of atomic collisions in the presence of radio frequency (rf) magnetic fields is developed and applied to elucidate the effects of combined dc and rf magnetic fields on ultracold collisions of Rb ...
The Angular Momentum of Magnetized Molecular Cloud Cores: A Two-Dimensional-Three-Dimensional Comparison
(Institute of Physics Publishing, Inc., 2010)
In this work, we present a detailed study of the rotational properties of magnetized and self-gravitating dense molecular cloud cores formed in a set of two very high resolution three-dimensional molecular cloud simulations ...
Star Formation in the Taurus filament L 1495: from Dense Cores to Stars
(Institute of Physics Publishing, Inc., 2010)
We present a study of dense structures in the L1495 filament in the Taurus Molecular Cloud and examine its star-forming properties. In particular we construct a dust extinction map of the filament using deep near-infrared ...