{
  "id": "1908.07114",
  "version": "v1",
  "published": "2019-08-20T00:08:13.000Z",
  "updated": "2019-08-20T00:08:13.000Z",
  "title": "Substructures in Minor Mergers' Tidal Streams",
  "authors": [
    "D. A. Noreña",
    "J. C. Muñoz-Cuartas",
    "L. F. Quiroga",
    "N. Libeskind"
  ],
  "comment": "20 pages, 13 figures. Accepted for publication in Revista Mexicana de Astronom\\'ia y Astrof\\'isica",
  "categories": [
    "astro-ph.GA"
  ],
  "abstract": "In this work, we explore the idea that substructures like stellar clusters could be formed from the tidal stream produced in galactic minor mergers. We use $N$-body and SPH simulations of satellite galaxies interacting with a larger galaxy. We study the distribution of mass in streams to identify overdensity regions in which a substructure could be formed. We found that without gas, no substructure formed as none of the overdensities shows a definite morphology nor dynamical stability. Including gas we found that several clumps appear and proved to be real long standing physical structures ($t \\geq$ 1 Gyr). We analyzed the orbits, ages and masses of these structures, finding its correspondence with the halo subsystems. We conclude that it is possible to form cluster-like structures from the material in tidal streams and found evidence in favour of the presence of dark matter in these systems.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2019-08-20T00:08:13.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "tidal stream",
      "substructure",
      "galactic minor mergers",
      "real long standing physical structures",
      "clumps appear"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 20,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}