Other
Scientific paper
May 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aas...198.2206k&link_type=abstract
American Astronomical Society, 198th AAS Meeting, #22.06; Bulletin of the American Astronomical Society, Vol. 33, p.818
Other
Scientific paper
The R Aqr symbiotic binary system is understood to contain an M giant and a compact companion in an evolved stellar system of mass ~2-3 Msun. We reported at HEAD 2000 on the discovery of x-ray jets 0.1 LY in extent using Chandra, whereas radio and UV jets have been discovered in past VLA and HST observations. The SW x-ray jet, 3.8 times fainter than the NE component, is a completely new phenomenon, with no known optical, UV nor radio counterpart. The skewed shape of the jets supports earlier observations of jet precession. We report further on the morphology and x-ray spectra of jet and central components. An adaptively smoothed image of low surface brightness outer portions of the jet is presented. An x-ray spectrum analysis is presented with jet temperatures of ~1.6x 106 K. The spectrum of the central region surrounding the star appears to be hot gas at ~2.1*E7 K, plus Fe I Kα emission, with a suggestion of Kα emission from other elements of similar atomic number, whose origin is yet to be explained. We gratefully acknowledge support from NASA under grant #GO0-1062A and for EK from NASA contract # NAS8-39073.
Hollis Jan. M.
Kellogg Edwin
Lyon Richard
Pedelty Jeffrey
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