Astronomers using the Hubble Space Telescope have identified four previously hidden white dwarf stars located near Earth, discovering the faint stellar companions hiding close to red dwarf stars.
The white dwarfs had gone undetected because their faint light was obscured by the brighter red dwarf stars they orbit closely alongside. Hubble’s observational capabilities allowed researchers to separate the faint signals of the white dwarfs from their brighter neighbors, revealing the hidden companions.
The discovery adds to the catalog of known white dwarfs in the solar neighborhood, offering astronomers additional nearby targets for studying the late-stage evolution of sun-like stars.
White dwarfs represent the final evolutionary stage for stars like the sun, and locating additional examples close to Earth gives astronomers convenient targets for studying the physics of stellar remnants in detail.
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Sources:
https://www.sciencedaily.com/news/top/technology/