{
  "id": "2008.01488",
  "version": "v1",
  "published": "2020-08-04T12:38:47.000Z",
  "updated": "2020-08-04T12:38:47.000Z",
  "title": "Abell 30 -- A Binary Central Star Among the Born-Again Planetary Nebulae",
  "authors": [
    "George H. Jacoby",
    "Todd C. Hillwig",
    "David Jones"
  ],
  "comment": "5 pages, 3 figures, accepted for publication in MNRAS Letters",
  "categories": [
    "astro-ph.SR"
  ],
  "abstract": "Eight planetary nebulae have been identified as `born-again', a class of object typified by knotty secondary ejecta having low masses ($\\sim$$10^{-4}$ M$_{\\odot}$) with nearly no hydrogen. Abell 30, the archetype of the class, also belongs to a small subset of planetary nebulae that exhibit extreme abundance discrepancy factors (where Abell 30 is the most extreme), a phenomenon strongly linked to binary star interactions. We report the presence of light curve brightness variations having a period of 1.060 days that are highly suggestive of a binary central star in Abell 30. If confirmed, this detection supports the proposed link between binary central stars and extreme abundance discrepancies.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2020-08-04T12:38:47.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "binary central star",
      "born-again planetary nebulae",
      "extreme abundance discrepancy factors",
      "light curve brightness variations",
      "knotty secondary ejecta"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 5,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}