Astron. Astrophys. 347, 720-723 (1999)

Effects by sintering on the energy dissipation efficiency in collisions of grain aggregates

S. Sirono

Department of Earth and Planetary Sciences, Hokkaido University, Sapporo 060-0810, Japan (sirono@cosmos.sci.hokudai.ac.jp)

Received 15 January 1999 / Accepted 14 April 1999

Abstract

Energy dissipation on collisions of grain aggregates is investigated taking into account effects by sintering. It is shown that sintering significantly reduces the energy dissipation efficiency because contacts between adjacent grains become strong by sintering.

Key words: solar system: formation ISM: dust, extinction

Send offprint requests to: S. Sirono

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Contents

• 1. Introduction
• 2. Sintering processes
• 3. Interactions between grains
• 4. Numerical results
• Acknowledgements
• References

© European Southern Observatory (ESO) 1999

Online publication: June 30, 1999
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