On the formation of runaway stars BN and x in the Orion Nebula Cluster
Artikel i vetenskaplig tidskrift, 2018

We explore scenarios for the dynamical ejection of stars BN and x from source I in the Kleinmann-Low nebula of the Orion Nebula Cluster (ONC), which is important because it is the closest region of massive star formation. This ejection would cause source I to become a close binary or a merger product of two stars. We thus consider binary-binary encounters as the mechanism to produce this event. By running a large suite of N-body simulations, we find that it is nearly impossible to match the observations when using the commonly adopted masses for the participants, especially a source I mass of 7 M-circle dot. The only way to recreate the event is if source I is more massive, that is, similar to 20 M-circle dot. However, even in this case, the likelihood of reproducing the observed system is low. We discuss the implications of these results for understanding this important star-forming region.

methods: numerical

stars: formation

stars: kinematics and dynamics


Juan Pablo Farias Osses

Chalmers, Rymd-, geo- och miljövetenskap, Astronomi och plasmafysik

Jonathan Tan

University of Virginia

Chalmers, Rymd-, geo- och miljövetenskap, Astronomi och plasmafysik

Astronomy and Astrophysics

0004-6361 (ISSN) 1432-0746 (eISSN)

Vol. 612 L7


Meteorologi och atmosfärforskning

Astronomi, astrofysik och kosmologi

Multidisciplinär geovetenskap



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