{
  "id": "1712.08485",
  "version": "v1",
  "published": "2017-12-22T15:00:14.000Z",
  "updated": "2017-12-22T15:00:14.000Z",
  "title": "On the Formation of Runaway Stars BN and x in the Orion Nebula Cluster",
  "authors": [
    "Juan P. Farias",
    "Jonathan C. Tan"
  ],
  "comment": "7 pages, 4 figures, 1 table. Submitted to A&A letters. Comments welcome!",
  "categories": [
    "astro-ph.SR",
    "astro-ph.GA"
  ],
  "abstract": "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 for being 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 $7\\:{\\rm{M}}_\\odot$. The only way to recreate the event is if source I is more massive, i.e., $\\sim20\\:{\\rm{M}}_\\odot$. 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.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2017-12-22T15:00:14.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "orion nebula cluster",
      "runaway stars bn",
      "closest region",
      "massive star formation",
      "important star-forming region"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 7,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}