{
  "id": "1105.0947",
  "version": "v2",
  "published": "2011-05-04T21:20:25.000Z",
  "updated": "2011-05-09T10:33:26.000Z",
  "title": "Chemical Composition of the RS CVn-type Star 29 Draconis",
  "authors": [
    "G. Barisevičius",
    "G. Tautvaišienė",
    "S. Berdyugina",
    "Y. Chorniy",
    "I. Ilyin"
  ],
  "journal": "Baltic Astronomy, 2010, Vol. 19, p. 157-167",
  "categories": [
    "astro-ph.SR"
  ],
  "abstract": "Photospheric parameters and chemical composition are determined for the single-lined chromospherically active RS CVn-type star 29 Draconis (HD 160538). From the high resolution spectra obtained on the Nordic Optical Telescope, abundances of 22 chemical elements, including the key elements such as 12C, 13C, N and O, were investigated. The differential line analysis with the MARCS model atmospheres gives Teff=4720 K, log g=2.5, Fe/H]=-0.20, [C/Fe]=-0.14, [N/Fe]=0.08, [O/Fe]=-0.04, C/N=2.40, 12C/13C=16. The low value of the 12C/13C ratio gives a hint that extra mixing processes in low-mass chromospherically active stars may start earlier than the theory of stellar evolution predicts.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2011-05-09T10:33:26.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "chemical composition",
      "chromospherically active rs cvn-type star",
      "high resolution spectra",
      "differential line analysis",
      "marcs model atmospheres"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "journal": "Baltic Astronomy",
      "year": 2010,
      "volume": 19,
      "pages": 157
    },
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 898673,
      "adsabs": "2010BaltA..19..157B"
    }
  }
}