Whole Earth Telescope observations of BPM 37093: a seismological test of crystallization theory in white dwarfs

A. Kanaan, A. Nitta, D. E. Winget +3

BPM 37093 is the only hydrogen-atmosphere white dwarf currently known which has sufficient mass (~ 1.1 M_sun) to theoretically crystallize while still inside the ZZ Ceti instabilit…