Bipolar ejection by the symbiotic binary system Z And during its 2006 outburst

Abstract

High resolution data in the region of the line Halpha have been obtained at the time of the light maximum and after it of the 2006 optical outburst of the symbiotic binary Z And. A blue-shifted absorption component indicating outflow velocity of about 1400 km/s as well as additional emission components with similar velocities, situated on the two sides of the main peak of the line were observed during that time. It is suggested that all of them are spectral signature of bipolar outflow, observed for the first time in the optical spectrum of this binary. The emission measure and the mass of the nebular part of the streams were estimated approximately.

5 pages, 2 figures; to be published in MNRAS Letters

References in corpus (3)

• A census of the Wolf-Rayet content in Westerlund 1 from near-infrared imaging and spectroscopy
• A "Combination Nova" Outburst in Z Andromedae: Nuclear Shell Burning Triggered by a Disk Instability
• Structure of the hot object in the symbiotic prototype Z And during its 2000-03 active phase

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• A MultiWavelength Study of the Symbiotic Mira HM Sge with SOFIA and HST
• V4141 Sgr: Outflows and repeated outbursts