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

Abstract

We present observations done with the OASIS instrument and the PUE’O 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 Hα line profiles is found to vary across the nebula, due to alt-azimuthally dependent line emission (or absorption by orbiting material).

Finally, a blueshifted Herbig-Haro object with a electron density of ~2000 cm^–3 is discovered near FU Orionis, its dynamical scale being compatible with the 1937-39 outburst.