{
  "id": "astro-ph/0209087",
  "version": "v2",
  "published": "2002-09-05T01:28:10.000Z",
  "updated": "2002-11-26T23:48:37.000Z",
  "title": "X-ray spectroscopy of Eta Carinae with XMM-Newton",
  "authors": [
    "Maurice A. Leutenegger",
    "Steven M. Kahn",
    "Gavin Ramsay"
  ],
  "comment": "20 pages, 8 figures, accepted by ApJ",
  "journal": "Astrophys.J. 585 (2003) 1015-1023",
  "doi": "10.1086/346183",
  "categories": [
    "astro-ph"
  ],
  "abstract": "We present XMM-Newton observations of the luminous star Eta Carinae, including a high resolution soft X-ray spectrum of the surrounding nebula obtained with the Reflection Grating Spectrometer. The EPIC image of the field around Eta Car shows many early-type stars and diffuse emission from hot, shocked gas. The EPIC spectrum of the star is similar to that observed in previous X-ray observations, and requires two temperature components. The RGS spectrum of the surrounding nebula shows K-shell emission lines from hydrogen- and helium-like nitrogen and neon and L-shell lines from iron, but little or no emission from oxygen. The observed emission lines are not consistent with a single temperature, but the range of temperatures observed is not large, spanning ~0.15-0.6 keV. We obtain upper limits for oxygen line emission and derive a lower limit of N/O > 9. This is consistent with previous abundance determinations for the ejecta of Eta Car, and with theoretical models for the evolution of massive, rotating stars.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2002-11-26T23:48:37.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "x-ray spectroscopy",
      "high resolution soft x-ray spectrum",
      "xmm-newton",
      "emission lines",
      "surrounding nebula"
    ],
    "tags": [
      "journal article"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 20,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 594380
    }
  }
}