With adaptive optics imaging at Keck observatory , we have discovered a substellar companion to the F6 Pleiades star HD 23514 , one of the dustiest main-sequence stars known to date ( L _ { IR } / L _ { * } \sim 2 \% ) . This is one of the first brown dwarfs discovered as a companion to a star in the Pleiades . The 0.06 M _ { \odot } late-M secondary has a projected separation of \sim 360 AU . The scarcity of substellar companions to stellar primaries in the Pleiades combined with the extremely dusty environment make this a unique system to study .