Large-Scale Ejecta of Z CMa—Proper Motion Study and New Features Discovered
Abstract
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.
- Publication:
-
Galaxies
- Pub Date:
- May 2023
- DOI:
- 10.3390/galaxies11030064
- arXiv:
- arXiv:2305.03080
- Bibcode:
- 2023Galax..11...64L
- Keywords:
-
- circumstellar matter: jets and outflows;
- stars: individual Z CMa;
- stars: emission-line;
- Be;
- Astrophysics - Solar and Stellar Astrophysics;
- Astrophysics - Astrophysics of Galaxies
- E-Print:
- 15 pages, 4 figures, published in Galaxies