Z Canis Majoris is a fascinating early-type binary with a Herbig Be primary and a FU Orionis-type secondary. Both of the stars exhibit sub-arcsecond jet-like ejecta. In addition, the primary is associated with the extended jet as well as with the large-scale outflow. In this study, we investigate further the nature of the large-scale outflow, which has not been studied since its discovery almost three and a half decades ago. We present proper motion measurements of individual features of the large-scale outflow and determine their kinematical ages. Furthermore, with our newly acquired deep images, we have discovered additional faint arc-shaped features that can be associated with the central binary.
Cite
@article{arxiv.2305.03080,
title = {Large-Scale Ejecta of Z CMa -- Proper Motion Study and New Features Discovered},
author = {Tiina Liimets and Michaela Kraus and Lydia Cidale and Sergey Karpov and Anthony Marston},
journal= {arXiv preprint arXiv:2305.03080},
year = {2023}
}