We present the discovery of a brown dwarf companion to the debris disk host star HR 2562 .
This object , discovered with the Gemini Planet Imager ( GPI ) , has a projected separation of 20.3 \pm 0.3 au ( 0.618 \pm 0.004 \arcsec ) from the star .
With the high astrometric precision afforded by GPI , we have confirmed common proper motion of HR 2562B with the star with only a month time baseline between observations to more than 5 \sigma .
Spectral data in J , H , and K bands show morphological similarity to L/T transition objects .
We assign a spectral type of L7 \pm 3 to HR 2562B , and derive a luminosity of \log ( L _ { bol } /L _ { \odot } ) =-4.62 \pm 0.12 , corresponding to a mass of 30 \pm 15 M _ { Jup } from evolutionary models at an estimated age of the system of 300–900 Myr .
Although the uncertainty in the age of the host star is significant , the spectra and photometry exhibit several indications of youth for HR 2562B .
The source has a position angle consistent with an orbit in the same plane as the debris disk recently resolved with Herschel .
Additionally , it appears to be interior to the debris disk .
Though the extent of the inner hole is currently too uncertain to place limits on the mass of HR 2562B , future observations of the disk with higher spatial resolution may be able to provide mass constraints .
This is the first brown dwarf-mass object found to reside in the inner hole of a debris disk , offering the opportunity to search for evidence of formation above the deuterium burning limit in a circumstellar disk .