{
  "id": "1703.03464",
  "version": "v1",
  "published": "2017-03-09T21:04:26.000Z",
  "updated": "2017-03-09T21:04:26.000Z",
  "title": "Gravitational collapse of the OMC-1 region",
  "authors": [
    "A. Hacar",
    "J. Alves",
    "M. Tafalla",
    "J. R. Goicoechea"
  ],
  "comment": "5 pages, 2 figures; Accepted as Letter to the Editor in A&A",
  "categories": [
    "astro-ph.GA",
    "astro-ph.SR"
  ],
  "abstract": "We have investigated the global dynamical state of the Integral Shaped Filament in the Orion A cloud using new N$_2$H$^+$ (1-0) large-scale, IRAM30m observations. Our analysis of its internal gas dynamics reveals the presence of accelerated motions towards the Orion Nebula Cluster, showing a characteristic blue-shifted profile centred at the position of the OMC-1 South region. The properties of these observed gas motions (profile, extension, and magnitude) are consistent with the expected accelerations for the gravitational collapse of the OMC-1 region and explain both the physical and kinematic structure of this cloud.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2017-03-09T21:04:26.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "gravitational collapse",
      "internal gas dynamics",
      "orion nebula cluster",
      "iram30m observations",
      "kinematic structure"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 5,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}