SDSS J142625.71+575218.3: A Prototype for a New Class of Variable White Dwarf
SDSS J142625.71+575218.3: A Prototype for a New Class of Variable White Dwarf
We present the results of a search for pulsations in six of the recently discovered carbon-atmosphere white dwarf ("hot DQ") stars. On the basis of our theoretical calculations, the star SDSS J142625.71+575218.3 is the only object expected to pulsate. We observe this star to be variable, with significant power at …