{
  "id": "1401.7791",
  "version": "v1",
  "published": "2014-01-30T10:50:09.000Z",
  "updated": "2014-01-30T10:50:09.000Z",
  "title": "Probing the gaseous disk of T Tau N with CN 5-4 lines",
  "authors": [
    "L. Podio",
    "I. Kamp",
    "C. Codella",
    "B. Nisini",
    "G. Aresu",
    "S. Brittain",
    "S. Cabrit",
    "C. Dougados",
    "C. Grady",
    "R. Meijerink",
    "G. Sandell",
    "M. Spaans",
    "W. -F. Thi",
    "G. J. White",
    "P. Woitke"
  ],
  "comment": "6 pages, 3 figures, accepted for publication on ApJ Letters",
  "doi": "10.1088/2041-8205/783/2/L26",
  "categories": [
    "astro-ph.GA"
  ],
  "abstract": "We present spectrally resolved Herschel/HIFI observations of the young multiple system T Tau in atomic and molecular lines. While CO, H2O, [C II], and SO lines trace the envelope and the outflowing gas up to velocities of 33 km/s with respect to systemic, the CN 5-4 hyperfine structure lines at 566.7, 566.9 GHz show a narrow double-peaked profile centered at systemic velocity, consistent with an origin in the outer region of the compact disk of T Tau N. Disk modeling of the T Tau N disk with the thermo-chemical code ProDiMo produces CN line fluxes and profiles consistent with the observed ones and constrain the size of the gaseous disk (R_out = 110 (+10, -20) AU) and its inclination (i = 25 \\pm 5 degree). The model indicates that the CN lines originate in a disk upper layer at 40-110 AU from the star, which is irradiated by the stellar UV field and heated up to temperatures of 50-700 K. With respect to previously observed CN 2-1 millimeter lines, the CN 5-4 lines appear to be less affected by envelope emission, due to their larger critical density and excitation temperature. Hence, high-J CN lines are a unique confusion-free tracer of embedded disks, such as the disk of T Tau N.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2014-01-30T10:50:09.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "gaseous disk",
      "prodimo produces cn line fluxes",
      "code prodimo produces cn line",
      "thermo-chemical code prodimo produces cn",
      "cn lines originate"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "journal": "The Astrophysical Journal",
      "year": 2014,
      "month": "Mar",
      "volume": 783,
      "number": 2
    },
    "note": {
      "typesetting": "TeX",
      "pages": 6,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2014ApJ...783L..26P"
    }
  }
}