Astronomers just found four hidden white dwarf stars near Earth
Astronomers have identified four previously hidden white dwarf stars located within 65 light-years of Earth. By using ultraviolet data from the Hubble Space Telescope, researchers were able to detect these stars, which were previously obscured by the glare of brighter red dwarf companions.
Why it matters
This discovery improves our understanding of the local stellar neighborhood and demonstrates the importance of multi-wavelength observation in identifying celestial objects.
Astronomers have directly confirmed four previously hidden white dwarf stars in nearby binary systems. Every system lies within 65 light-years of Earth, and one contains the ninth closest known white dwarf to the Sun.
The discoveries were made by researchers at the University of Warwick and the University of Colorado Boulder. Their findings were published in the Monthly Notices of the Royal Astronomical Society ( MNRAS ).
White Dwarfs Hidden by Brighter Companions
Each white dwarf orbits alongside a red dwarf star. Because the red dwarfs appear larger and brighter, the systems looked like they contained only a single star when viewed in visible light.
The new observations revealed that all four nearby red dwarfs were concealing white dwarf companions.
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