Five blue straggler stars in the open cluster M67 show ultraviolet excess in their spectral energy distributions, which the authors attribute to low-mass white dwarf companions.
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Detection of White Dwarf Companions to Blue Straggler Stars from UVIT Observations of M67
Five blue straggler stars in the open cluster M67 show ultraviolet excess in their spectral energy distributions, which the authors attribute to low-mass white dwarf companions.