{
  "id": "1505.04792",
  "version": "v1",
  "published": "2015-05-18T20:00:36.000Z",
  "updated": "2015-05-18T20:00:36.000Z",
  "title": "Dust Formation in Milky Way-like Galaxies",
  "authors": [
    "Ryan McKinnon",
    "Paul Torrey",
    "Mark Vogelsberger"
  ],
  "comment": "28 pages, 24 figures. Submitted to MNRAS. Simulation movies available at http://www.mit.edu/~ryanmck/#research",
  "categories": [
    "astro-ph.GA",
    "astro-ph.CO"
  ],
  "abstract": "We introduce a dust model for cosmological simulations implemented in the moving-mesh code AREPO and present a suite of cosmological hydrodynamical zoom-in simulations to study dust formation within galactic haloes. Our model accounts for the stellar production of dust, accretion of gas-phase metals onto existing grains, destruction of dust through local supernova activity, and dust driven by winds from star-forming regions. We find that accurate stellar and active galactic nuclei feedback is needed to reproduce the observed dust-metallicity relation and that dust growth largely dominates dust destruction. Our simulations predict a dust content of the interstellar medium which is consistent with observed scaling relations at $z = 0$, including scalings between dust-to-gas ratio and metallicity, dust mass and gas mass, dust-to-gas ratio and stellar mass, and dust-to-stellar mass ratio and gas fraction. We find that roughly two-thirds of dust at $z = 0$ originated from Type II supernovae, with the contribution from asymptotic giant branch stars below 20 per cent for $z \\gtrsim 5$. While our suite of Milky Way-sized galaxies forms dust in good agreement with a number of key observables, it predicts a high dust-to-metal ratio in the circumgalactic medium, which motivates a more realistic treatment of thermal sputtering of grains and dust cooling channels.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2015-05-18T20:00:36.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "milky way-like galaxies",
      "dust formation",
      "milky way-sized galaxies forms dust",
      "growth largely dominates dust destruction",
      "dust-to-gas ratio"
    ],
    "publication": {
      "doi": "10.1093/mnras/stw253",
      "journal": "Monthly Notices of the Royal Astronomical Society",
      "year": 2016,
      "month": "Apr",
      "volume": 457,
      "number": 4,
      "pages": 3775
    },
    "note": {
      "typesetting": "TeX",
      "pages": 28,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2016MNRAS.457.3775M",
      "inspire": 1371678
    }
  }
}