{
  "id": "1804.11321",
  "version": "v1",
  "published": "2018-04-30T16:49:46.000Z",
  "updated": "2018-04-30T16:49:46.000Z",
  "title": "Complex organic molecules in the Galactic Centre: the N-bearing family",
  "authors": [
    "S. Zeng",
    "I. Jiménez-Serra",
    "V. M. Rivilla",
    "S. Martín",
    "J. Martín-Pintado",
    "M. A. Requena-Torres",
    "J. Armijos-Abendaño",
    "D. Riquelme",
    "R. Aladro"
  ],
  "comment": "24 pages, 23 figures, 7 tables, accepted for publication in MNRAS",
  "categories": [
    "astro-ph.GA"
  ],
  "abstract": "We present an unbiased spectral line survey toward the Galactic Centre (GC) quiescent giant molecular cloud (QGMC), G+0.693 using the GBT and IRAM 30$\\,$ telescopes. Our study highlights an extremely rich organic inventory of abundant amounts of nitrogen (N)-bearing species in a source without signatures of star formation. We report the detection of 17 N-bearing species in this source, of which 8 are complex organic molecules (COMs). A comparison of the derived abundances relative to H$_2$ is made across various galactic and extragalactic environments. We conclude that the unique chemistry in this source is likely to be dominated by low-velocity shocks with X-rays/cosmic rays also playing an important role in the chemistry. Like previous findings obtained for O-bearing molecules, our results for N-bearing species suggest a more efficient hydrogenation of these species on dust grains in G+0.693 than in hot cores in the Galactic disk, as a consequence of the low dust temperatures coupled with energetic processing by X-ray/cosmic ray radiation in the GC.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2018-04-30T16:49:46.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "complex organic molecules",
      "galactic centre",
      "n-bearing family",
      "quiescent giant molecular cloud",
      "extremely rich organic inventory"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 24,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}