By using the NASA/ESA Hubble Space Telescope, a team of astronomers, surveyed young white dwarf stars starting their migration from the congested midpoint of an early star cluster to its less populated fringes, for the first time.
White dwarfs are the gutted remnants of ancient stars that swiftly shut down their nuclear incinerators, that cooled down and lost their mass at the conclusion of their active lives. As these planetary remains aged and cast off mass, they are booted out of the dense and packed epicenter of the globular constellation and migrate to the orbital edge. Theoretically, astronomers knew about this progression, they has never witnessed it, until now.
Jeremy Heyl from the University of British Columbia and the first author elucidated that the white dwarfs that migrated and established into distant courses outside of the core, were group according to their mass, which encompasses about a fourth of the young white dwarfs in the group.
Elisa Antolini from the Universita degli Studi di Perugia, the co-author said that prior to becoming white dwarfs, the migratory stars belonged to the largest in the cluster, as big as the Sun.
As the youngest white dwarfs have only just begun their migration, this could be proof that the stars lose their mass at a later point in their lives than we once believed.
This new finding implies that the stars truly lose 40 to 50 % of their bulk 10 million years before completely fizzling out as white dwarfs.