{
  "id": "2306.08154",
  "version": "v1",
  "published": "2023-06-13T21:55:03.000Z",
  "updated": "2023-06-13T21:55:03.000Z",
  "title": "Search and study of ultracompact HII regions",
  "authors": [
    "D. Quiroga-Gonzalez",
    "M. A. Trinidad",
    "E. de la Fuente",
    "J. M. Masque",
    "T. Rodriguez-Esnard"
  ],
  "comment": "Accepted for publication in Revista Mexicana de Astronomia y Astrofisica (October 2023)",
  "categories": [
    "astro-ph.GA",
    "astro-ph.SR"
  ],
  "abstract": "We present results from a sample of 106 high-luminosity IRAS sources observed with the Very Large Array in the B and C configurations. 96 sources were observed in the X-band and 52 in the K-band, with 42 of them observed at both wavelengths. We also used previously published observations in the C-band for 14 of them. The detection rate of sources with 3.6~cm continuum emission was $\\sim25\\%$, while only 10\\% have emission at 1.3~cm. In order to investigate the nature of these sources, their physical parameters were calculated mainly using the 3.6~cm continuum emission, and for sources detected at two wavelengths, we used the best fit of three HII region models with different geometries. As a final result, we present a catalog of the detected sources, which includes their basic physical parameters for further analysis. The catalog contains 17 ultracompact HII regions and 3 compact HII regions.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2023-06-13T21:55:03.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "ultracompact hii regions",
      "continuum emission",
      "high-luminosity iras sources",
      "hii region models",
      "catalog contains"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}