FUV spectroscopy of the white dwarf in the blue lurker WOCS 14020 yields a 0.72 solar mass C/O white dwarf with a 390 Myr cooling age, indicating formation through a merger in a hierarchical triple followed by a common envelope event.
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The Blue Lurker WOCS 14020: A Long-Period Post-Common-Envelope Binary in M67 Originating from a Merger in a Triple System
FUV spectroscopy of the white dwarf in the blue lurker WOCS 14020 yields a 0.72 solar mass C/O white dwarf with a 390 Myr cooling age, indicating formation through a merger in a hierarchical triple followed by a common envelope event.