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Evolution of Chemistry and Molecular Line Profile during Protostellar Collapse
Jeong-Eun Lee, Edwin A. Bergin, Neal J. Evans
Understanding the chemical evolution in star-forming cores is a necessary pre-condition to correctly assess physical conditions when using molecular emission. We follow the evoluti…
Radiative Transfer and Starless Cores
Eric Keto, George B. Rybicki, Edwin A. Bergin +1
We develop a method of analyzing radio frequency spectral line observations to derive data on the temperature, density, velocity, and molecular abundance of the emitting gas. The m…
Molecular Cloud Formation Behind Shock Waves
Edwin A. Bergin, Lee W. Hartmann, John C. Raymond +1
We examine the formation of molecular gas behind shocks in atomic gas using a chemical/dynamical model, particular emphasis is given to constraints the chemistry places on the dyna…
Water Absorption From Line-of-Sight Clouds Toward W49A
Rene Plume, Michael J. Kaufman, David A. Neufeld +7
We have observed 6 clouds along the line-of-sight toward W49A using the Submillimeter Wave Astronomy Satellite (SWAS) and several ground-based observatories. The ortho-H2O 1-0 and…