Simulation of the Formation and Morphology of Ice Mantles on Interstellar Grains

Details Simulation of the Formation and Morphology of Ice Mantles on Interstellar Grains Simulation of the Formation and Morphology of Ice Mantles on Interstellar Grains

2007-07-18

arxiv.org/abs/0707.2744v1

Astronomy and Astrophysics

Astrophysics

40 pages, 11 figures, 7 tables, to be published in ApJ

Scientific paper

10.1086/521014

Although still poorly understood, the chemistry that occurs on the surfaces of interstellar dust particles profoundly affects the growth of molecules in the interstellar medium. An important set of surface reactions produces icy mantles of many monolayers in cold and dense regions. The monolayers are dominated by water ice, but also contain CO, CO_{2}, and occasionally methanol as well as minor constituents. In this paper, the rate of production of water-ice dominated mantles is calculated for different physical conditions of interstellar clouds and for the first time images of the morphology of interstellar ices are presented. For this purpose, the continuous-time random-walk Monte Carlo simulation technique has been used. The visual extinction, density, and gas and grain temperatures are varied. It is shown that our stochastic approach can reproduce the important observation that ice mantles only grow in the denser regions.

Affiliated with

Also associated with

No associations

Rating

Simulation of the Formation and Morphology of Ice Mantles on Interstellar Grains does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Simulation of the Formation and Morphology of Ice Mantles on Interstellar Grains, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Simulation of the Formation and Morphology of Ice Mantles on Interstellar Grains will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-553952