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Modeling CO Emission: I. CO as a Column Density Tracer and the X-Factor in Molecular Clouds
Rahul Shetty, Simon C. Glover, Cornelis P. Dullemond +1
Theoretical and observational investigations have indicated that the abundance of carbon monoxide (CO) is very sensitive to intrinsic properties of the gaseous medium, such as dens…
Impact of grain evolution on the chemical structure of protoplanetary disks
A. I. Vasyunin, D. S. Wiebe, T. Birnstiel +3
We study the impact of dust evolution in a protoplanetary disk around a T Tauri star on the disk chemical composition. For the first time we utilize a comprehensive model of dust e…
Equilibrium Initialization and Stability of Three-Dimensional Gas Disks
Hsiang-Hsu Wang, Ralf S. Klessen, Cornelis P. Dullemond +2
We present a new systematic way of setting up galactic gas disks based on the assumption of detailed hydrodynamic equilibrium. To do this, we need to specify the density distributi…
Understanding Spatial and Spectral Morphologies of Ultracompact H II Regions
Thomas Peters, Mordecai-Mark Mac Low, Robi Banerjee +2
The spatial morphology, spectral characteristics, and time variability of ultracompact H II regions provide strong constraints on the process of massive star formation. We have per…