21 citations · 49 across the 8 of their papers we have counts for
8 papers
Mass outflow from the symbiotic binary RS Oph during its 2021 outburst
N. A. Tomov, M. T. Tomova, K. A. Stoyanov +7
RS Oph is a symbiotic recurrent nova containing a massive white dwarf with heavy mass loss during activity. In August 2021, it underwent its seventh optical eruption since the end…
A collimated wind interpretation for the spectral variability of Z And during its major 2006 eruption
N. A. Tomov, M. T. Tomova, D. V. Bisikalo
High-resolution observations in the region, centered at 4400 Å and those of the lines HeII 4686, Hbeta and HeI 6678 of the spectrum of the symbiotic binary Z And were performed dur…
Transient accretion disc-like envelope in the symbiotic binary BF Cygni during its 2006 - 2015 optical outburst
N. A. Tomov, M. T. Tomova, D. V. Bisikalo
The optical light of the symbiotic binary BF Cygni during its last eruption after 2006 shows orbital variations because of an eclipse of the outbursting compact object. The first o…
Symbiotic Stars with Similar Line Profiles during Activity
N. A. Tomov, M. T. Tomova, D. V. Bisikalo
Line profiles containing indication of bipolar collimated outflow along with P Cyg absorption during phase of activity of several symbiotic systems are considered. The Hgamma profi…
Interpretation of the line spectrum of classical symbiotic stars in the scenario for their prototype Z And
N. A. Tomov, D. V. Bisikalo, M. T. Tomova +1
Results of the study of the symbiotic binary Z And during its recent active phase 2000 -- 2010 when it experienced a series of six optical outbursts are presented. High-resolution…
The hydrogen and helium lines of the symbiotic binary Z And during its brightening at the end of 2002
N. A. Tomov, M. T. Tomova, D. V. Bisikalo
High resolution observations in the region of the lines Halpha, He II 4686 and Hgamma of the spectrum of the symbiotic binary Z And were performed during its small-amplitude bright…