{
  "id": "1305.4535",
  "version": "v1",
  "published": "2013-05-20T14:11:25.000Z",
  "updated": "2013-05-20T14:11:25.000Z",
  "title": "Active Galactic Nucleus and Extended Starbursts in a Mid-stage Merger VV114",
  "authors": [
    "D. Iono",
    "T. Saito",
    "M. S. Yun",
    "R. Kawabe",
    "D. Espada",
    "Y. Hagiwara",
    "M. Imanishi",
    "T. Izumi",
    "K. Kohno",
    "K. Motohara",
    "K. Nakanishi",
    "H. Sugai",
    "K. Tateuchi",
    "Y. Tamura",
    "J. Ueda",
    "Y. Yoshii"
  ],
  "comment": "5 pages, 4 figures, PASJ Letters accepted",
  "categories": [
    "astro-ph.GA",
    "astro-ph.CO"
  ],
  "abstract": "High resolution (0.4 arcsec) Atacama Large Millimeter/submillimeter Array (ALMA) Cycle 0 observations of HCO+(4-3) and HCN(4-3) toward a mid-stage infrared bright merger VV114 have revealed compact nuclear (<200 pc) and extended (3 - 4 kpc) dense gas distribution across the eastern part of the galaxy pair. We find a significant enhancement of HCN(4-3) emission in an unresolved compact and broad (290km/s) component found in the eastern nucleus of VV114, and we suggest dense gas associated with the surrounding material around an Active Galactic Nucleus (AGN), with a mass upper limit of < 4 x 10^8 Msun. The extended dense gas is distributed along a filamentary structure with resolved dense gas concentrations (230pc; 10^6 Msun) separated by a mean projected distance of 600 pc, many of which are generally consistent with the location of star formation traced in Pa alpha emission. Radiative transfer calculations suggest moderately dense (10^5 - 10^6 cm^-3) gas averaged over the entire emission region. These new ALMA observations demonstrate the strength of the dense gas tracers in identifying both the AGN and star formation activity in a galaxy merger, even in the most dust enshrouded environments in the local universe.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2013-05-20T14:11:25.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "active galactic nucleus",
      "mid-stage merger vv114",
      "extended starbursts",
      "star formation",
      "atacama large millimeter/submillimeter array"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "doi": "10.1093/pasj/65.3.L7",
      "journal": "Publications of the Astronomical Society of Japan",
      "year": 2013,
      "month": "Jun",
      "volume": 65
    },
    "note": {
      "typesetting": "TeX",
      "pages": 5,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 1234202,
      "adsabs": "2013PASJ...65L...7I"
    }
  }
}