2008/01/29 by N. Przybilla, M. F. Nieva, U. Heber +4 · 62 citations
Engineering · Physics and Astronomy · #Astronomy #Astrophysical Phenomena and Observations #Astrophysics #Biology #Black hole (networking) #Context (archaeology) #Galactic halo #Galaxy #Halo #Large Magellanic Cloud #Mechanics and Biomechanics Studies #Physics #Pulsars and Gravitational Waves Research #Star (game theory) #Stars #Supermassive black hole #astro-ph
paper · pdf · doi:10.1051/0004-6361:200809391
published in Astronomy and Astrophysics 480(3), L37-L40 (EDP Sciences) · 4 pages, 3 figures; accepted for publication by Astronomy & Astrophysics
arxiv created 2008/01/29 · openalex publication_date 2008/02/05 · arxiv updated 2009/12/01 · openalex created_date 2022/09/30 · openalex updated_date 2026/07/31
Context.Hyper-velocity stars move so fast that only a supermassive black hole (SMBH) seems to be capable of accelerating them. Hence the Galactic centre (GC) is the only place suggested as their origin. We discovered earlier that the object HE 0437-5439 is a hyper-velocity star. However, this early B-type star is too short-lived to have reached its current position in the Galactic halo if ejected from the GC, except if it is a blue straggler. Its proximity to the Large Magellanic Cloud (LMC) suggests an origin in this galaxy.