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A radio jet in the prototypical symbiotic star Z Andromedae

A radio jet in the prototypical symbiotic star Z Andromedae
A radio jet in the prototypical symbiotic star Z Andromedae
As part of a multiwavelength campaign to observe the 2000-2002 outburst of the prototypical symbiotic star Z Andromedae, we observed this object six times each with the Multi-Element Radio Linked Interferometer Network (MERLIN) and Very Large Array (VLA). The radio flux varied significantly during the course of the optical outburst at all three observation frequencies (1.4, 5, and 15 GHz). A jet-like extension was present in the 2001 September MERLIN image and appeared to be aligned perpendicularly to the plane of the binary orbit. Assuming that the ejection took place at the beginning of the optical outburst, the 0.06-arcsec separation between the peak of the extended emission and the central core implies that the ejected material was moving with a velocity of ~400 km s-1. This extended emission faded on a time-scale of ~ months and was not detected at any other epoch. We consider the implications of jets being a component of a 'prototypical' symbiotic system and compare properties of the observed jet of Z And with those of the jets in X-ray binary systems.
0035-8711
430-436
Brocksopp, C.
9d5651cd-6f49-430c-b0cb-80d688f5a3d8
Sokoloski, J.L.
f17cd1a2-1bb0-41fb-9586-f7a38cee5285
Kaiser, C.
96be8117-8240-4705-9f5b-4efed468a13a
Richards, A.M.
6a1b4560-7dfb-4c9b-a4f6-5946b09dfd41
Muxlow, T.W.B.
72c8c206-cfe8-425c-9f9c-256dbf2f56c1
Seymour, N.
9642614b-0e44-4bb4-8e6d-28e9875c088b
Brocksopp, C.
9d5651cd-6f49-430c-b0cb-80d688f5a3d8
Sokoloski, J.L.
f17cd1a2-1bb0-41fb-9586-f7a38cee5285
Kaiser, C.
96be8117-8240-4705-9f5b-4efed468a13a
Richards, A.M.
6a1b4560-7dfb-4c9b-a4f6-5946b09dfd41
Muxlow, T.W.B.
72c8c206-cfe8-425c-9f9c-256dbf2f56c1
Seymour, N.
9642614b-0e44-4bb4-8e6d-28e9875c088b

Brocksopp, C., Sokoloski, J.L., Kaiser, C., Richards, A.M., Muxlow, T.W.B. and Seymour, N. (2004) A radio jet in the prototypical symbiotic star Z Andromedae. Monthly Notices of the Royal Astronomical Society, 347 (2), 430-436. (doi:10.1111/j.1365-2966.2004.07213.x).

Record type: Article

Abstract

As part of a multiwavelength campaign to observe the 2000-2002 outburst of the prototypical symbiotic star Z Andromedae, we observed this object six times each with the Multi-Element Radio Linked Interferometer Network (MERLIN) and Very Large Array (VLA). The radio flux varied significantly during the course of the optical outburst at all three observation frequencies (1.4, 5, and 15 GHz). A jet-like extension was present in the 2001 September MERLIN image and appeared to be aligned perpendicularly to the plane of the binary orbit. Assuming that the ejection took place at the beginning of the optical outburst, the 0.06-arcsec separation between the peak of the extended emission and the central core implies that the ejected material was moving with a velocity of ~400 km s-1. This extended emission faded on a time-scale of ~ months and was not detected at any other epoch. We consider the implications of jets being a component of a 'prototypical' symbiotic system and compare properties of the observed jet of Z And with those of the jets in X-ray binary systems.

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Published date: 2004

Identifiers

Local EPrints ID: 14786
URI: https://eprints.soton.ac.uk/id/eprint/14786
ISSN: 0035-8711
PURE UUID: 6f47cb63-14aa-44d7-987c-269a4029ce1b

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Date deposited: 28 Feb 2005
Last modified: 15 Jul 2019 19:32

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Contributors

Author: C. Brocksopp
Author: J.L. Sokoloski
Author: C. Kaiser
Author: A.M. Richards
Author: T.W.B. Muxlow
Author: N. Seymour

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