{
  "id": "1706.09944",
  "version": "v1",
  "published": "2017-06-29T20:21:11.000Z",
  "updated": "2017-06-29T20:21:11.000Z",
  "title": "ALMA Detects CO(3-2) within a Super Star Cluster in NGC5253",
  "authors": [
    "J. L. Turner",
    "S. M. Consiglio",
    "S. C. Beck",
    "W. M. Goss",
    "P. T. P. Ho",
    "D. S. Meier",
    "S. Silich",
    "J. -H. Zhao"
  ],
  "comment": "7 pages, 2 figures. Submitted to ApJ",
  "categories": [
    "astro-ph.GA"
  ],
  "abstract": "We present images of CO(J=3-2) emission near the supernebula in the dwarf galaxy NGC~5253, which contains one of the best examples of a potential globular cluster in formation. The 0.3\" resolution images reveal an unusual molecular cloud, \"Cloud D1\", coincident with the radio-infrared supernebula. The ~6-pc diameter cloud has a linewidth, $\\Delta$ v = 21.7 km/s, that reflects only the gravitational potential of the star cluster residing within it. The corresponding virial mass is 2.5 x 10$^5$ M$_\\odot$. The cluster appears to have a top-heavy initial mass function, with $M_{low}$~1-2 M$_\\odot$. Molecular gas mass is very uncertain but constitutes < 35% of the dynamical mass within the cloud boundaries. Cloud D1 is probably bright in CO(3-2) because the gas is optically thin and hot. In spite of the presence of an estimated ~1500-2000 O stars within the small cloud, the CO appears relatively undisturbed. We propose that Cloud D1 consists of star-forming cores orbiting with more evolved stars in the core of the giant cluster.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2017-06-29T20:21:11.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "super star cluster",
      "alma detects",
      "top-heavy initial mass function",
      "unusual molecular cloud",
      "resolution images reveal"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 7,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}