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arXiv · 2305.03080

Large-Scale Ejecta of Z CMa -- Proper Motion Study and New Features Discovered

Tiina Liimets·Michaela Kraus·Lydia Cidale·Sergey Karpov·Anthony Marston
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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.

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Tiina Liimets, Michaela Kraus, Lydia Cidale, Sergey Karpov, Anthony Marston. 2023-05-04. Large-Scale Ejecta of Z CMa -- Proper Motion Study and New Features Discovered. https://doi.org/10.3390/galaxies11030064

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