Evidence from K2 for Rapid Rotation in the Descendant of an Intermediate-mass Star
Evidence from K2 for Rapid Rotation in the Descendant of an Intermediate-mass Star
Abstract Using patterns in the oscillation frequencies of a white dwarf observed by K2 , we have measured the fastest rotation rate (1.13 ± 0.02 hr) of any isolated pulsating white dwarf known to date. Balmer-line fits to follow-up spectroscopy from the SOAR telescope show that the star (SDSSJ0837+1856, EPIC …