{
  "id": "1009.4740",
  "version": "v1",
  "published": "2010-09-23T23:48:44.000Z",
  "updated": "2010-09-23T23:48:44.000Z",
  "title": "The spectral evolution and ejecta of recurrent nova U Sco in the 2010 outburst",
  "authors": [
    "M. P. Diaz",
    "R. E. Williams",
    "G. J. Luna",
    "M. Moraes",
    "L. Takeda"
  ],
  "categories": [
    "astro-ph.SR",
    "astro-ph.HE"
  ],
  "abstract": "Synoptic spectroscopic observations of the U Sco 2010 outburst from maximum light to quiescence as well as a contemporaneous X-ray observation are presented and analyzed. The X-ray spectrum 52 days after outburst indicates a hot source (kTbb ~ 70 eV). . Narrow line components from the irradiated companion atmosphere were observed in hydrogen and helium optical recombination lines. The formation of a nebular spectrum is seen for the first time in this class of recurrent novae, allowing a detailed study of the ejecta using photoionization models. Unusual [OIII] auroral-to-nebular line ratios were found and possible scenarios of their origin are discussed. The modeling of the emission line spectrum suggests a highly heterogeneous ejecta with mass around or above 3 x 10-6 Msun",
  "revisions": [
    {
      "version": "v1",
      "updated": "2010-09-23T23:48:44.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "recurrent nova",
      "spectral evolution",
      "narrow line components",
      "emission line spectrum",
      "synoptic spectroscopic observations"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "doi": "10.1088/0004-6256/140/6/1860",
      "journal": "The Astronomical Journal",
      "year": 2010,
      "month": "Dec",
      "volume": 140,
      "number": 6,
      "pages": 1860
    },
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 870978,
      "adsabs": "2010AJ....140.1860D"
    }
  }
}