Document Type
Article
Publication Date
5-30-2012
Publication Title
Monthly Notices of the Royal Astronomical Society
Department
Department of Physics and Astronomy
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.
DOI
10.1111/j.1365-2966.2012.20930.x
Dartmouth Digital Commons Citation
Ginsburg, Idan; Loeb, Abraham; and Wegner, Gary A., "Hypervelocity Planets and Transits Around Hypervelocity Stars" (2012). Dartmouth Scholarship. 1844.
https://digitalcommons.dartmouth.edu/facoa/1844
Included in
External Galaxies Commons, Physical Processes Commons, Stars, Interstellar Medium and the Galaxy Commons
