{
  "id": "astro-ph/0402458",
  "version": "v1",
  "published": "2004-02-19T11:22:18.000Z",
  "updated": "2004-02-19T11:22:18.000Z",
  "title": "On the Nature of the Binary Components of RX J0806.3+1527",
  "authors": [
    "K. Reinsch",
    "V. Burwitz",
    "R. Schwarz"
  ],
  "comment": "2 pages including 2 figures. To appear in RevMexAA(SC) Conference Series, Proc. of IAU Colloquium 194 `Compact Binaries in the Galaxy and Beyond', La Paz (Mexico), eds. G. Tovmassian & E. Sion",
  "categories": [
    "astro-ph"
  ],
  "abstract": "We present imaging circular polarimetry and near-infrared photometry of the suspected ultra-short period white-dwarf binary RX J0806.3+1527 obtained with the ESO VLT and discuss the implications for a possible magnetic nature of the white dwarf accretor and the constraints derived for the nature of the donor star. Our V-filter data show marginally significant circular polarization with a modulation amplitude of ~0.5% typical for cyclotron emission from an accretion column in a magnetic field of order 10 MG and not compatible with a direct-impact accretor model. The optical to near-infrared flux distribution is well described by a single blackbody with temperature kT_bb = 35000 K and excludes a main-sequence stellar donor unless the binary is located several scale heights above the galactic disk population.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2004-02-19T11:22:18.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "binary components",
      "ultra-short period white-dwarf binary rx",
      "suspected ultra-short period white-dwarf binary",
      "marginally significant circular polarization",
      "white dwarf accretor"
    ],
    "tags": [
      "conference paper"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 2,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 644744
    }
  }
}