{
  "id": "1509.03779",
  "version": "v1",
  "published": "2015-09-12T21:12:40.000Z",
  "updated": "2015-09-12T21:12:40.000Z",
  "title": "CSO and CARMA Observations of L1157. I. A Deep Search for Hydroxylamine (NH$_2$OH)",
  "authors": [
    "Brett A. McGuire",
    "P. Brandon Carroll",
    "Niklaus M. Dollhopf",
    "Nathan R. Crockett",
    "Joanna F. Corby",
    "Ryan A. Loomis",
    "Andrew Burkhardt",
    "Christopher Shingledecker",
    "Geoffrey A. Blake",
    "Anthony J. Remijan"
  ],
  "comment": "Accepted in the Astrophysical Journal",
  "categories": [
    "astro-ph.GA"
  ],
  "abstract": "A deep search for the potential glycine precursor hydroxylamine (NH$_2$OH) using the Caltech Submillimeter Observatory (CSO) at $\\lambda = 1.3$ mm and the Combined Array for Research in Millimeter-wave Astronomy (CARMA) at $\\lambda = 3$ mm is presented toward the molecular outflow L1157, targeting the B1 and B2 shocked regions. We report non-detections of NH$_2$OH in both sources. We a perform non-LTE analysis of CH$_3$OH observed in our CSO spectra to derive kinetic temperatures and densities in the shocked regions. Using these parameters, we derive upper limit column densities of NH$_2$OH of $\\leq1.4 \\times 10^{13}$~cm$^{-2}$ and $\\leq1.5 \\times 10^{13}$~cm$^{-2}$ toward the B1 and B2 shocks, respectively, and upper limit relative abundances of $N_{NH_2OH}/N_{H_2} \\leq1.4 \\times 10^{-8}$ and $\\leq1.5 \\times 10^{-8}$, respectively.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2015-09-12T21:12:40.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "deep search",
      "carma observations",
      "derive upper limit column densities",
      "potential glycine precursor hydroxylamine",
      "upper limit relative abundances"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}