Four New Massive Pulsating White Dwarfs Including an Ultramassive DAV

Brandon Curd, A. Gianninas, Keaton J. Bell +5

We report the discovery of four massive ($M>0.8M_{\odot }$) ZZ Ceti white dwarfs, including an ultramassive $1.16M_{\odot }$ star. We obtained ground based, time-series photometry…