Enhanced Dust Emission in the HL Tau Disc: A Low-Mass Companion in Formation?

J. S. Greaves, A. M. S. Richards, W. K. M. Rice +1

We have imaged the disc of the young star HL Tau using the VLA at 1.3 cm, with 0.08" resolution (as small as the orbit of Jupiter). The disc is around half the stellar mass, assumi…