{
  "id": "1909.00027",
  "version": "v1",
  "published": "2019-08-30T18:31:28.000Z",
  "updated": "2019-08-30T18:31:28.000Z",
  "title": "The z=7.54 Quasar ULAS J1342+0928 Is Hosted by a Galaxy Merger",
  "authors": [
    "Eduardo Banados",
    "Mladen Novak",
    "Marcel Neeleman",
    "Fabian Walter",
    "Roberto Decarli",
    "Bram P. Venemans",
    "Chiara Mazzucchelli",
    "Chris Carilli",
    "Feige Wang",
    "Xiaohui Fan",
    "Emanuele P. Farina",
    "Hans-Walter Rix"
  ],
  "categories": [
    "astro-ph.GA"
  ],
  "abstract": "We present ALMA 0.28\"x0.20\" (1.4kpc x 1.0kpc) resolution observations of the [CII] 158um line and underlying dust continuum in the host galaxy of the most distant quasar currently known, ULAS J1342+0928 at z=7.5413. Both the [CII] and continuum are detected and spatially resolved. The [CII] line is ~1.5 times more extended than the continuum emission, showing an elongated and complex structure of approximately 3.2kpc x 6.4kpc. Two separate peaks are clearly seen (>6sigma each) in three 100 km/s width [CII] channel maps. The velocity field of the [CII] gas does not show evidence of a coherent rotation field but rather chaotic motion, reminiscent of an on-going merger.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2019-08-30T18:31:28.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "galaxy merger",
      "quasar ulas",
      "coherent rotation field",
      "dust continuum",
      "host galaxy"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}