December 31, 2020

A representation of the Milky Way with the 591 high velocity star candidate in the halo (Image courtesy KONG Xiao of NAOC)

An article published in “The Astrophysical Journal Supplement Series” reports the discovery of 591 high velocity star candidates in the Milky Way’s halo. A team of researchers used data from the Data Release 7 of the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) and the Data Release 2 of the Gaia space probe to find these stars whose velocity is very high compared to the average of the Milky Way stars. The data indicates that 43 of these stars may have enough velocity to escape the galaxy’s gravity.