{
  "id": "1201.6031",
  "version": "v1",
  "published": "2012-01-29T11:56:46.000Z",
  "updated": "2012-01-29T11:56:46.000Z",
  "title": "Interstellar gas within $\\sim 10$ pc of Sgr A$^*$",
  "authors": [
    "Katia Ferriere"
  ],
  "comment": "21 pages, 7 figures",
  "categories": [
    "astro-ph.GA"
  ],
  "abstract": "We seek to obtain a coherent and realistic three-dimensional picture of the interstellar gas out to about 10 pc of the dynamical center of our Galaxy, which is supposed to be at Sgr A$^*$. We review the existing observational studies on the different gaseous components that have been identified near Sgr A$^*$, and retain all the information relating to their spatial configuration and/or physical state. Based on the collected information, we propose a three-dimensional representation of the interstellar gas, which describes each component in terms of both its precise location and morphology and its thermodynamic properties. The interstellar gas near Sgr A$^*$ can represented by five basic components, which are, by order of increasing size: (1) a central cavity with roughly equal amounts of warm ionized and atomic gases, (2) a ring of mainly molecular gas, (3) a supernova remnant filled with hot ionized gas, (4) a radio halo of warm ionized gas and relativistic particles, and (5) a belt of massive molecular clouds. While the halo gas fills $\\approx 80%$ of the studied volume, the molecular components enclose $\\approx 98%$ of the interstellar mass.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2012-01-29T11:56:46.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "interstellar gas",
      "realistic three-dimensional picture",
      "ionized gas",
      "halo gas fills",
      "molecular components enclose"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "doi": "10.1051/0004-6361/201117181",
      "journal": "Astronomy and Astrophysics",
      "year": 2012,
      "month": "Apr",
      "volume": 540
    },
    "note": {
      "typesetting": "TeX",
      "pages": 21,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 1086653,
      "adsabs": "2012A&A...540A..50F"
    }
  }
}