{
  "id": "0707.3037",
  "version": "v1",
  "published": "2007-07-20T10:25:15.000Z",
  "updated": "2007-07-20T10:25:15.000Z",
  "title": "The optical counterpart of IGR J00291+5934 in quiescence",
  "authors": [
    "P. D'Avanzo",
    "S. Campana",
    "S. Covino",
    "G. L. Israel",
    "L. Stella",
    "G. Andreuzzi"
  ],
  "comment": "6 pages, 5 figures. Accepted for publication in Astronomy and Astrophysics",
  "doi": "10.1051/0004-6361:20077395",
  "categories": [
    "astro-ph"
  ],
  "abstract": "The recent (December 2004) discovery of the sixth accretion-powered millisecond X-ray pulsar IGR J00291+5934 provides a very good chance to deepen our knowledge of such systems. Although these systems are well studied at high energies, poor informations are available for their optical/NIR counterparts during quiescence. Up to now, only for SAX J1808.4-3658, the first discovered system of this type, we have a secure multiband detection of its optical counterpart in quiescence. Among the seven known system IGR J00291+5934 is the one that resembles SAX J1808.4-3658 more closely. With the Italian 3.6 m TNG telescope, we have performed deep optical and NIR photometry of the field of IGR J00291+5934 during quiescence in order to look for the presence of a variable counterpart. We present here the first multiband ($VRIJH$) detection of the optical and NIR counterpart of IGR J00291+5934 in quiescence as well as a deep upper limit in the $K-$band. We obtain an optical light curve that shows variability consistent with a sinusoidal modulation at the known 2.46 hr orbital period and present evidence for a strongly irradiated companion.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2007-07-20T10:25:15.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "optical counterpart",
      "quiescence",
      "accretion-powered millisecond x-ray pulsar igr",
      "sixth accretion-powered millisecond x-ray pulsar",
      "hr orbital period"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "journal": "Astronomy and Astrophysics",
      "year": 2007,
      "month": "Sep",
      "volume": 472,
      "number": 3,
      "pages": 881
    },
    "note": {
      "typesetting": "TeX",
      "pages": 6,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 756343,
      "adsabs": "2007A&A...472..881D"
    }
  }
}