{
  "id": "1707.08733",
  "version": "v1",
  "published": "2017-07-27T07:39:53.000Z",
  "updated": "2017-07-27T07:39:53.000Z",
  "title": "Secular evolution of Milky Way-type galaxies",
  "authors": [
    "F. Combes"
  ],
  "comment": "4 pages, 2 figures, SF2A 2017, C. Reyle, P. Di Matteo, F. Herpin, E. Lagadec, A. Lancon F. Royer (eds)",
  "categories": [
    "astro-ph.GA"
  ],
  "abstract": "The internal evolution of disk galaxies like the Milky Way are driven by non-axisymmetries (bars) and the implied angular momentum transfer of the matter; baryons are essentially driven inwards to build a more concentrated disk. This mass concentration may lead to the decoupling of a secondary bar, since the orbit precessing frequency is then much enhanced. Vertical resonances with the bar will form a box/peanut bulge in a Gyr time-scale. Gas flows due to gravity torques can lead to a young nuclear disk forming stars, revealed by a sigma-drop in velocity dispersion. These gas flows moderated by feedback produce intermittent accretion of the super-massive black hole, and cycles of AGN activity. The fountain effect due to nuclear star formation may lead to inclined, and even polar nuclear disks.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2017-07-27T07:39:53.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "milky way-type galaxies",
      "secular evolution",
      "gas flows",
      "feedback produce intermittent accretion",
      "young nuclear disk forming stars"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 4,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}