Discovery of a Proto-White Dwarf with a Massive Unseen Companion

Gautham Adamane Pallathadka, Vedant Chandra, Nadia L. Zakamska +8

We report the discovery of SDSS~J022932.28+713002.7, a nascent extremely low-mass (ELM) white dwarf (WD) orbiting a massive ($>1M_{\odot }$ at 2$\ddot{I}ƒ$ confidence) companion with a pe…