{
  "id": "1510.06612",
  "version": "v1",
  "published": "2015-10-22T13:04:43.000Z",
  "updated": "2015-10-22T13:04:43.000Z",
  "title": "Light curves of the latest FUor: Indication of a close binary",
  "authors": [
    "M. Hackstein",
    "M. Haas",
    "Á. Kóspál",
    "F. -J. Hambsch",
    "R. Chini",
    "P. Ábrahám",
    "A. Moór",
    "F. Pozo Nuñez",
    "M. Ramolla",
    "Ch. Westhues",
    "L. Kaderhandt",
    "Ch. Fein",
    "A. Barr Domínguez",
    "K. -W. Hodapp"
  ],
  "journal": "A&A 582 L12 (2015)",
  "doi": "10.1051/0004-6361/201527127",
  "categories": [
    "astro-ph.SR"
  ],
  "abstract": "We monitored the recent FUor 2MASS J06593158-0405277 (V960 Mon) since November 2009 at various observatories and multiple wavelengths. After the outburst by nearly 2.9 mag in $r$ around September 2014 the brightness gently fades until April 2015 by nearly 1 mag in $U$ and 0.5 mag in $z$. Thereafter the brightness at $\\lambda>5000 \\AA$ was constant until June 2015 while the shortest wavelengths ($U, B$) indicate a new rise, similar to that seen for the FUor V2493 Cyg (HBC722). Our near-infrared (NIR) monitoring between December 2014 and April 2015 shows a smaller outburst amplitude ($\\sim$2 mag) and a smaller (0.2 $-$ 0.3 mag) post-outburst brightness decline. Optical and NIR color-magnitude diagrams indicate that the brightness decline is caused by growing extinction. The post-outburst light curves are modulated by an oscillating color-neutral pattern with a period of about 17 days and an amplitude declining from $\\sim$0.08 mag in October 2014 to $\\sim$0.04 mag in May 2015. The properties of the oscillating pattern lead us to suggest the presence of a close binary with eccentric orbit.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2015-10-22T13:04:43.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "close binary",
      "latest fuor",
      "indication",
      "post-outburst brightness decline",
      "smaller outburst amplitude"
    ],
    "tags": [
      "journal article"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}