Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21725809d&link_type=abstract
American Astronomical Society, AAS Meeting #217, #258.09; Bulletin of the American Astronomical Society, Vol. 43, 2011
Astronomy and Astrophysics
Astronomy
Scientific paper
While the processes of low-mass star formation are relatively well-understood, the same cannot be said for the processes involved in massive star-formation. It has been suggested that turbulent support may play an important role in the collapse of clouds to form massive stars. Studies of the evaporation of ices and ensuing gas-phase chemical evolution in these regions suggests that predictions from a turbulently supported cloud are consistent with existing observations. In this study, we extend our previous work to explicitly include grain-surface chemistry. We consider both adsorption and desorption, as well as chemistry on the grain surface. Photoprocessing of the ices is considered as well. The resulting gas and grain-surface chemical evolution is then applied to a thermally and dynamically evolving envelope, while allowing the protostar to grow in time. We present the results of these models to the well-studied source AFGL 2591. Simulated observations are also produced for comparison against existing and upcoming observational data.
Doty Steven D.
Tan Jian
van Dishoeck Ewine
Visser Ruud
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