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

0574026 - ASÚ 2024 RIV CH eng J - Journal Article
Liimets, Tiina - Kraus, Michaela - Cidale, L.S. - Karpov, Sergey - Marston, A.
Large-Scale Ejecta of Z CMa-Proper Motion Study and New Features Discovered.
Galaxies. Roč. 11, č. 3 (2023), č. článku 64. E-ISSN 2075-4434
R&D Projects: GA ČR(CZ) GA20-00150S; GA MŠMT EF15_003/0000437
EU Projects: European Commission(XE) 823734 - POEMS
Institutional support: RVO:67985815 ; RVO:68378271
Keywords : circumstellar matter * jets and outflows * stars
OECD category: Astronomy (including astrophysics,space science); Astronomy (including astrophysics,space science) (FZU-D)
Impact factor: 2.5, year: 2022
Method of publishing: Open access
http://hdl.handle.net/11104/0344387

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.
Permanent Link: https://hdl.handle.net/11104/0344387