naa a22 4500 510790046 CHVBK 20180411083316.0 cr unu---uuuuu 180411e20130701xx s 000 0 eng 10.1134/S1063773713070013 doi (NATIONALLICENCE)springer-10.1134/S1063773713070013 Spectral evolution of the classical symbiotic star V1413 Aql during a new activity cycle [Elektronische Daten] [V. Esipov, T. Tarasova, A. Tatarnikov, A. Tatarnikova] We present the results of our spectroscopic observations for the classical symbiotic star V1413 Aql performed in 2008-2011. Various states of the hot component are considered: almost quiescence in 2008, very slow outburst onset in 2009, outburst maximum in 2010, and gradual brightness decline in the erupted hot component in 2011. We have established that, according to a spectroscopic criterion, in 2008 the system was in quiescence. We have shown that the parameters of the hot component during its outburst can be determined only by modeling the differences of the spectra taken at different eclipse phases. The active hot component of V1413 Aql at the outburst maximum is shown to have had the record late (for a symbiotic star) spectral type K2. At various stages of the new activity cycle, we have modeled the continuumenergy distribution based on a standard three-componentmodel, a model including a standard accretion disk and a red giant, and amodel including a supergiant (of various spectral types) and a red giant. The parameters of the system's components have been determined. Pleiades Publishing, Ltd., 2013 stellar structure and evolution nationallicence variable stars nationallicence binary stars nationallicence symbiotic stars nationallicence Esipov V. Sternberg Astronomical Institute, Universitetskii pr. 13, 119992, Moscow, Russia aut Tarasova T. Crimean Astrophysical Observatory, 98409, Nauchny, Crimea, Ukraine aut Tatarnikov A. Sternberg Astronomical Institute, Universitetskii pr. 13, 119992, Moscow, Russia aut Tatarnikova A. Sternberg Astronomical Institute, Universitetskii pr. 13, 119992, Moscow, Russia aut Astronomy Letters Springer US; http://www.springer-ny.com 39/7(2013-07-01), 458-473 1063-7737 39:7<458 2013 39 11443 https://doi.org/10.1134/S1063773713070013 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1134/S1063773713070013 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Esipov V. Sternberg Astronomical Institute, Universitetskii pr. 13, 119992, Moscow, Russia aut NATIONALLICENCE 700 1- Tarasova T. Crimean Astrophysical Observatory, 98409, Nauchny, Crimea, Ukraine aut NATIONALLICENCE 700 1- Tatarnikov A. Sternberg Astronomical Institute, Universitetskii pr. 13, 119992, Moscow, Russia aut NATIONALLICENCE 700 1- Tatarnikova A. Sternberg Astronomical Institute, Universitetskii pr. 13, 119992, Moscow, Russia aut NATIONALLICENCE 773 0- Astronomy Letters Springer US; http://www.springer-ny.com 39/7(2013-07-01), 458-473 1063-7737 39:7<458 2013 39 11443 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer