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Imprints of Stellar Encounters in the ONC

Published online by Cambridge University Press:  01 September 2007

C. Olczak  and
S. Pfalzner
C. Olczak
Affiliation:
I. Physikalisches Institut, University of Cologne, 50937 Cologne, Germany email: olczak@ph1.uni-koeln.de
S. Pfalzner
Affiliation:
I. Physikalisches Institut, University of Cologne, 50937 Cologne, Germany email: olczak@ph1.uni-koeln.de
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Abstract

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External destruction of protoplanetary discs acts mainly due to two mechanisms: gravitational drag by stellar encounters and evaporation by stellar winds and radiation. It is an important question whether any of these mechanisms is important in the stellar evolution process. We focus on the effect of stellar encounters and investigate if there are any observables that could trace this mechanism in young stellar clusters. An analysis of observational data of the Orion Nebula Cluster (ONC) and accompanying n-body simulations both provide evidence for encounters of star-disc systems in the ONC, eventually leading to substantial disk disruption.

Keywords

stellar dynamicsmethods: data analysisn-body simulationsstars: kinematicscircumstellar matter
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 3 , Symposium S246: Dynamical Evolution of Dense Stellar Systems , September 2007 , pp. 67 - 68
Copyright
Copyright © International Astronomical Union 2008

References

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