{
  "id": "1411.1111",
  "version": "v1",
  "published": "2014-11-04T23:34:42.000Z",
  "updated": "2014-11-04T23:34:42.000Z",
  "title": "ALMA Observations of Warm Dense Gas in NGC 1614 --- Breaking of Star Formation Law in the Central kpc",
  "authors": [
    "C. K. Xu",
    "C. Cao",
    "N. Lu",
    "Y. Gao",
    "T. Diaz-Santos",
    "R. Herrero-Illana",
    "R. Meijerink",
    "G. Privon",
    "Y. -H. Zhao",
    "A. S. Evans",
    "S. König",
    "J. M. Mazzarella",
    "S. Aalto",
    "P. Appleton",
    "L. Armus",
    "V. Charmandaris",
    "J. Chu",
    "S. Haan",
    "H. Inami",
    "E. J. Murphy",
    "D. B. Sanders",
    "B. Schulz",
    "P. van der Werf"
  ],
  "comment": "13 pages, 10 figures; accepted by ApJ",
  "categories": [
    "astro-ph.GA"
  ],
  "abstract": "We present ALMA Cycle-0 observations of the CO (6-5) line emission and of the 435um dust continuum emission in the central kpc of NGC 1614, a local luminous infrared galaxy (LIRG) at a distance of 67.8 Mpc (1 arcsec = 329 pc). The CO emission is well resolved by the ALMA beam (0\".26 x 0\".20) into a circum-nuclear ring, with an integrated flux of f_{CO(6-5)} = 898 (+-153) Jy km/s, which is 63(+-12)% of the total CO(6-5) flux measured by Herschel. The molecular ring, located between 100pc < r < 350pc from the nucleus, looks clumpy and includes seven unresolved (or marginally resolved) knots with median velocity dispersion of 40 km/s. These knots are associated with strong star formation regions with \\Sigma_{SFR} 100 M_\\sun/yr/kpc^{2} and \\Sigma_{Gas} 1.0E4 M_\\sun/pc^{2}. The non-detections of the nucleus in both the CO (6-5) line emission and the 435um continuum rule out, with relatively high confidence, a Compton-thick AGN in NGC 1614. Comparisons with radio continuum emission show a strong deviation from an expected local correlation between \\Sigma_{Gas} and \\Sigma_{SFR}, indicating a breakdown of the Kennicutt-Schmidt law on the linear scale of 100 pc.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2014-11-04T23:34:42.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "warm dense gas",
      "star formation law",
      "central kpc",
      "alma observations",
      "line emission"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "doi": "10.1088/0004-637X/799/1/11",
      "journal": "The Astrophysical Journal",
      "year": 2015,
      "month": "Jan",
      "volume": 799,
      "number": 1,
      "pages": 11
    },
    "note": {
      "typesetting": "TeX",
      "pages": 13,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2015ApJ...799...11X"
    }
  }
}