{
  "id": "1712.05054",
  "version": "v1",
  "published": "2017-12-14T00:00:46.000Z",
  "updated": "2017-12-14T00:00:46.000Z",
  "title": "Unveiling the Hot Molecular Core in the Ultracompact \\hii Region with Extended Emission G12.21--0.10",
  "authors": [
    "Eduardo de la Fuente",
    "Miguel A. Trinidad",
    "Alicia Porras",
    "Carlos Rodriguez-Rico",
    "Esteban D. Araya",
    "Stanley Kurtz",
    "Peter Hofner",
    "Alberto Nigoche-Netro"
  ],
  "comment": "Accepted for Publication on Revista Mexicana de Astronomia y Astrofisica (Vol. 54, No. 1, April 2018.)",
  "categories": [
    "astro-ph.GA",
    "astro-ph.SR"
  ],
  "abstract": "We present a multiwavelength study of the cometary \\hii region G12.21--0.10 using the VLA and OVRO. Both radio continuum (0.3, 0.7, 2 and 3.6~cm) and spectral lines of H41$\\alpha$, $^{13}$CS(2$-$1) \\& (1$-$0), and NH$_{\\rm 3}$(2,2) \\& (4,4) observations are included. We find two 3~mm continuum peaks toward G12.21--0.10, one of them is spatially coincident with the UC~H~II region, while the other coincides spatially with a molecular clump. We also find that the 0.7, 2 and 3.6~cm continuum and H41$\\alpha$ line are only detected toward the UC~H~II region, while the $^{13}$CS, and NH$_{\\rm 3}$ is spatially associated with the molecular clump. Based on the morphology, kinetic temperature ($\\sim$86~K), volumetric density ($\\sim$1.5$\\times$10$^6$~cm$^{-3}$) and linear size ($\\sim$0.22~pc) of the molecular clump, we suggest this source is consistent with a hot molecular core.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2017-12-14T00:00:46.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "hot molecular core",
      "extended emission g12",
      "molecular clump",
      "ultracompact",
      "region g12"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}