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arXiv · 1708.05910

St 2-22 - another symbiotic star with high-velocity bipolar jets

T. Tomov·R. Zamanov·C. Gałan·P. Pietrukowicz
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Abstract

We report finding high-velocity components in the H{\alpha} emission wings of St 2-22 spectra, obtained in 2005. This discovery have encouraged us to start the present study, aiming to show that this little studied object is a jet producing symbiotic system. We used high-resolution optical and low-resolution near infrared spectra, as well as available optical and infrared photometry, to evaluate some of the physical parameters of the St 2-22 components and the characteristics of the jets. The evaluated parameters of the components confirmed that St 2-22 is a S-type symbiotic star. Our results demonstrate that an unnoticed outburst of St 2-22, similar to those in classical symbiotics, occurred in the first half of 2005. During the outburst, collimated, bipolar jets were ejected by the hot component of St 2-22 with an average velocity of about 1700 km/s.

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T. Tomov, R. Zamanov, C. Gałan, P. Pietrukowicz. 2017-08-19. St 2-22 - another symbiotic star with high-velocity bipolar jets. https://doi.org/10.32023/0001-5237/67.3.2

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