{
  "id": "1104.1829",
  "version": "v2",
  "published": "2011-04-11T02:06:01.000Z",
  "updated": "2011-05-20T17:22:28.000Z",
  "title": "N II 5668-5712, a New Class of Spectral Features in Eta Carinae",
  "authors": [
    "Andrea Mehner",
    "Kris Davidson",
    "Gary J. Ferland"
  ],
  "comment": "4 figures, 1 table",
  "categories": [
    "astro-ph.SR"
  ],
  "abstract": "We report on the N II 5668-5712 emission and absorption lines in the spectrum of Eta Carinae. Spectral lines of the stellar wind regions can be classified into four physically distinct categories: 1) low-excitation emission such as H I and Fe II, 2) higher excitation He I features, 3) the N II lines discussed in this paper, and 4) He II emission. These categories have different combinations of radial velocity behavior, excitation processes, and dependences on the secondary star. The N II lines are the only known features that originate in \"normal\" undisturbed zones of the primary wind but depend primarily on the location of the hot secondary star. N II probably excludes some proposed models, such as those where He I lines originate in the secondary star's wind or in an accretion disk.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2011-05-20T17:22:28.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "eta carinae",
      "spectral features",
      "secondary stars wind",
      "stellar wind regions",
      "radial velocity behavior"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "doi": "10.1088/0004-637X/737/2/70",
      "journal": "The Astrophysical Journal",
      "year": 2011,
      "month": "Aug",
      "volume": 737,
      "number": 2,
      "pages": 70
    },
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 895712,
      "adsabs": "2011ApJ...737...70M"
    }
  }
}