{
  "id": "1307.2173",
  "version": "v1",
  "published": "2013-07-08T17:14:11.000Z",
  "updated": "2013-07-08T17:14:11.000Z",
  "title": "A Search for l-C3H+ and l-C3H in Sgr B2(N), Sgr B2(OH), and the Dark Cloud TMC-1",
  "authors": [
    "Brett A. McGuire",
    "P. Brandon Carroll",
    "Ryan A. Loomis",
    "Geoffrey A. Blake",
    "Jan M. Hollis",
    "Frank J. Lovas",
    "Philip R. Jewell",
    "Anthony J. Remijan"
  ],
  "comment": "17 Pages, 6 Figures, Accepted in The Astrophysical Journal",
  "categories": [
    "astro-ph.GA"
  ],
  "abstract": "Pety et al. (2012) recently reported the detection of several transitions of an unknown carrier in the Horsehead PDR and attribute them to l-C3H+. Here, we have tested the predictive power of their fit by searching for, and identifying, the previously unobserved J=1-0 and J=2-1 transitions of the unknown carrier (B11244) towards Sgr B2(N) in data from the publicly available PRIMOS project. Also presented here are observations of the J=6-5 and J=7-6 transitions towards Sgr B2(N) and Sgr B2(OH) using the Barry E. Turner Legacy Survey and results from the Kaifu et al. (2004) survey of TMC-1. We calculate an excitation temperature and column density of B11244 of ~10 K and ~10^13 cm-2 in Sgr B2(N) and ~79 K with an upper limit of < 1.5 x 10^13 cm-2 in Sgr B2(OH) and find trace evidence for the cation's presence in TMC-1. Finally, we present spectra of the neutral species in both Sgr B2(N) and TMC-1, and comment on the robustness of the assignment of the detected signals to l-C3H+.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2013-07-08T17:14:11.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "sgr b2",
      "dark cloud",
      "unknown carrier",
      "transitions",
      "turner legacy survey"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "doi": "10.1088/0004-637X/774/1/56",
      "journal": "The Astrophysical Journal",
      "year": 2013,
      "month": "Sep",
      "volume": 774,
      "number": 1,
      "pages": 56
    },
    "note": {
      "typesetting": "TeX",
      "pages": 17,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 1241799,
      "adsabs": "2013ApJ...774...56M"
    }
  }
}