Massive Hypervelocity Runaway Stars in the Large Magellanic Cloud

Abstract Since the hypervelocity stars were discovered in Milky Way, various mechanisms have been proposed to explain these runaway stars. Up now, however, dominant ejected mechanism of is still unclear. As largest and closest face-on satellite galaxy Large Magellanic Cloud (LMC) serves as a good target, allowing us study this issue. Based on high-precision astrometric parameters provided by Gaia Data Release 3, we researched proper motions 3119 massive O–B2-type LMC identified 98 (∼3%) having ability escape from LMC, with more than 50% confidence. Furthermore, investigating characteristics adopting regression analysis, find that dynamic ejection scenario might be LMC.