Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010arep...54..628t&link_type=abstract
Astronomy Reports, Volume 54, Issue 7, pp.628-644
Astronomy and Astrophysics
Astronomy
1
Scientific paper
We present the results of our study of the classical symbiotic star Z And during its period of activity in 2000-2010. In this period, the system experienced a series of six outbursts, for three of which high-resolution spectra were obtained and analyzed. These observations provided information about the system's behavior during the entire activity period, rather than during an individual outburst. In particular, we found a fundamental difference between the first outburst, which initiated the activity period, and subsequent outbursts, namely, the presence of bipolar collimated optical outflows for some of the outbursts. We propose a model that can explain all the spectroscopic phenomena observed during this series of outbursts, as well as previous series of outbursts of Z And, and suggest that similar scenarios may be valid for other classical symbiotic stars.
Bisikalo Dimitry V.
Kil'pio Yu. E.
Tomov N. A.
Tomova M. T.
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