{
  "id": "1705.03080",
  "version": "v1",
  "published": "2017-05-08T20:48:39.000Z",
  "updated": "2017-05-08T20:48:39.000Z",
  "title": "Detection of HC$_3$N maser emission in NGC253",
  "authors": [
    "Simon Ellingsen",
    "Xi Chen",
    "Shari Breen",
    "Hai-hau Qiao"
  ],
  "comment": "Accepted for publication in ApJ Letters, 7 pages, 3 figures",
  "categories": [
    "astro-ph.GA"
  ],
  "abstract": "We report the detection of maser emission from the $J=4-3$ transition of HC$_3$N at 36.4~GHz towards the nearby starburst galaxy NGC253. This is the first detection of maser emission from this transition in either a Galactic or extragalactic source. The HC$_3$N maser emission has a brightness temperature in excess of 2500 K and is offset from the center of the galaxy by approximately 18 arcsec (300 pc), but close to a previously reported class~I methanol maser. Both the HC$_3$N and methanol masers appear to arise near the interface between the galactic bar and the central molecular zone, where it is thought that molecular gas is being transported inwards, producing a region of extensive low-velocity shocks.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2017-05-08T20:48:39.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "maser emission",
      "nearby starburst galaxy ngc253",
      "central molecular zone",
      "methanol masers appear",
      "first detection"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 7,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}