Bulletin of the American Physical Society
2023 Spring Meeting of the APS Eastern Great Lakes Section
Volume 68, Number 5
Saturday, April 1, 2023; Oakland University, Rochester, Michigan
Session K01: Poster Session & Snacks (3:30pm-5:00pm EDT)
3:30 PM,
Saturday, April 1, 2023
Oakland University HHB
Room: 4050
Chair: Michael Crescimanno, Department of Physics, Youngstown State University
Abstract: K01.00003 : Grain surface chemistry in proto-stellar star forming regions
Presenter:
Steven Doty
(Denison University)
Author:
Steven Doty
(Denison University)
1. Gas-phase abundances of simple molecules are primarily affected by heating of the envelope above the sublimation temperature. These results, such as for H2O, are consistent with observations.
2. Significant gas-phase complexity is achieved due to the time spent in grain surface as the grains infall into the warming envelope, and due to the high temperatures and densities in the gas phase during the infall as well.
3. A comparison of the results at theinner edge of the spherical envelope (2000AU) are surprisingly consistent with observations of cometary abundances in the solar system. This is suggestive of the possibility that a significant amount of chemical evolution in proto-planetary nebulae may be due to chemical evolution during the protostellar infall phase.
4. A potential sulphur resevoir is identified
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