Wolf 1130: A Nearby Triple System Containing a Cool, Ultramassive White Dwarf

Gregory N. Mace, Andrew W. Mann, Brian A. Skiff +9

Following the discovery of the T8 subdwarf WISEJ200520.38+542433.9 (Wolf 1130C), with common proper motion to a binary (Wolf 1130AB) consisting of an M subdwarf and a white dwarf,…