Coupled Adaptive Optics and Integral Field Spectroscopy of Pre-Main-Sequence Stars

Abstract

We present observations done with the OASIS instrument and the PUEO adaptive optics system at the Canada-France-Hawaii Telescope. By combining the measurements of Z Canis Majoris photocenter versus wavelength with a model for the system, the spectra of each component was recovered. Its microjet is driven by the embedded Herbig Ae/Be star and found compatible with the 1987 outburst. The kinematics and excitation of RW Aurigae micro-jet are presented, terminal velocities are smaller than those predicted by disk winds, excitation is found compatible with shocks. Two micro-jets (N-S and E-W) are detected in R Monocerotis, they are associated with R Mon A and B respectively. The east-west jet is redshifted. The blueshifted lobe is assumed hidden behind the nebula. We speculate that this lobe is the cause of the nebula variability. The scattered H line profiles is found to vary across the nebula, due to alt-azimuthally dependent line emission (or absorption by orbiting material). Finally,ablueshifted Herbig-Haro object withaelectron density of ~ 2000 cm3 is discovered near FU Orionis, its dynamical scale being compatible with the 1937-39 outburst.