{ "id": "1201.1446", "version": "v3", "published": "2012-01-06T16:30:38.000Z", "updated": "2012-03-14T18:46:23.000Z", "title": "Hypervelocity Planets and Transits Around Hypervelocity Stars", "authors": [ "Idan Ginsburg", "Abraham Loeb", "Gary A. Wegner" ], "comment": "8 pages, 5 figures, 2 tables, accepted for publication in MNRAS", "categories": [ "astro-ph.GA" ], "abstract": "The disruption of a binary star system by the massive black hole at the Galactic Centre, SgrA*, can lead to the capture of one star around SgrA* and the ejection of its companion as a hypervelocity star (HVS). We consider the possibility that these stars may have planets and study the dynamics of these planets. Using a direct $N$-body integration code, we simulated a large number of different binary orbits around SgrA*. For some orbital parameters, a planet is ejected at a high speed. In other instances, a HVS is ejected with one or more planets orbiting around it. In these cases, it may be possible to observe the planet as it transits the face of the star. A planet may also collide with its host star. In such cases the atmosphere of the star will be enriched with metals. In other cases, a planet is tidally disrupted by SgrA*, leading to a bright flare.", "revisions": [ { "version": "v3", "updated": "2012-03-14T18:46:23.000Z" } ], "analyses": { "keywords": [ "hypervelocity star", "hypervelocity planets", "binary star system", "body integration code", "galactic centre" ], "tags": [ "journal article" ], "publication": { "doi": "10.1111/j.1365-2966.2012.20930.x", "journal": "Monthly Notices of the Royal Astronomical Society", "year": 2012, "month": "Jun", "volume": 423, "number": 1, "pages": 948 }, "note": { "typesetting": "TeX", "pages": 8, "language": "en", "license": "arXiv", "status": "editable", "inspire": 1083694, "adsabs": "2012MNRAS.423..948G" } } }