The PIGS survey sought out—and found—a group of metal-poor stars staying close to the galaxy’s core.
the nascent observatory to cut through the dust to see ancient objects shrouded in the rejectamenta of space.Telescope to spot candidate stars for their inner galactic study, and the candidates were confirmed using spectroscopic observations by the Anglo-Australian Telescope.
In the new work, the team found that the older stars moved more chaotically, though they generally maintained rotations around the galactic center. The stars generally spent most of their lives in this intimate area of the galaxy, which surrounds the supermassive black hole Sagittarius A*, an object roughly four million times the mass of our Sun.Understanding the behavior of these ancient stars could help explain the evolution of our galaxy, as well as those similar to it.
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