SUBARCSECOND VLA1 MAPS OF THE DISK AND THE JET IN HL TAURI

High-angular resolution (approximately 0.3''-0.4'') VLA observations of HL Tau at 3.6 and 1.3 cm show extended structures associated with this young star that are strikingly different at each wavelength. While the structure observed at 3.6 cin is elongated approximately in the east-west direction, the 1.3 cm structure is elongated approximately in the north-south direction. We interpret these results to imply that while the 3.6 cm emission is dominated by free-free radiation from an ionized outflow, the 1.3 cm emission traces dust emission from a perpendicular, collimating disk. If our interpretation is correct, these VLA images represent the first subsecond images of both jet and disk in a young star.