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Coupled Adaptive Optics and Integral Field Spectroscopy of Pre-Main-Sequence Stars
- Publication Year :
- 2005
-
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.
Details
- Language :
- English
- Database :
- OpenAIRE
- Accession number :
- edsair.od......1406..ceb68070cc5a529a9a21b0733022a78d