SIMBAD references

2002ApJ...580L.167M - Astrophys. J., 580, L167-L170 (2002/December-1)

Discovery of a near-infrared jetlike feature in the Z Canis Majoris system.


Abstract (from CDS):

We present near-infrared high-resolution observations of the young binary system Z Canis Majoris using the adaptive optics system at the Keck II telescope. Both components are unresolved at 1.25 and 1.65 µm, although high dynamic range images reveal a previously unknown jetlike feature in the circumstellar environment. We argue that this feature probably arises from light scattered off the walls of a jet-blown cavity, and proper-motion studies of this feature can probe the dynamics of the bipolar outflow. Potentially, the morphology of the dust-laden cavity walls offers a new probe of the momentum profile and collimation of bipolar winds from young stellar objects. We also derive high-precision binary parameters, which when combined with historical data have allowed the first detection of orbital motion. Finally, our observations confirm the high degree of flux variability in the system; the northwest binary component is dominant at the H band, in contrast to all previous observations.

Abstract Copyright:

Journal keyword(s): Infrared: Stars - Instrumentation: Adaptive Optics - Stars: Planetary Systems: Protoplanetary Disks - Stars: Formation - Techniques: High Anular Resolution

Simbad objects: 5

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