naa a22 4500 510790070 CHVBK 20180411083316.0 cr unu---uuuuu 180411e20131201xx s 000 0 eng 10.1134/S1063773713120062 doi (NATIONALLICENCE)springer-10.1134/S1063773713120062 Superbroad component in emission lines of SS 433 [Elektronische Daten] [P. Medvedev, S. Fabrika, V. Vasiliev, V. Goranskij, E. Barsukova] We have detected new components in stationary emission lines of SS 433; these are the superbroad components that are low-contrast substrates with a width of 2000-2500 km s−1 in He I λ4922 and Hβ and 4000-5000 kms−1 in He II λ4686. Based on 44 spectra taken during four years of observations from 2003 to 2007, we have found that these components in the He II and He I lines are eclipsed by the donor star; their behavior with precessional and orbital phases is regular and similar to the behavior of the optical brightness of SS 433. The same component in Hβ shows neither eclipses nor precessional variability. We conclude that the superbroad components in the helium and hydrogen lines are different in origin. Electron scattering is shown to reproduce well the superbroad component of Hβ at a gas temperature of 20-35 kK and an optical depth for Thomson scattering τ ≈ 0.25−0.35. The superbroad components of the helium lines are probably formed in the wind from the supercritical accretion disk. We have computed a wind model based on the concept of Shakura-Sunyaev supercritical disk accretion. The main patterns of the He II line profiles are well reproduced in this model: not only the appearance of the superbroad component but also the evolution of the central two-component part of the profile of this line during its eclipse by the donor star can be explained. Pleiades Publishing, Inc., 2013 SS 433 nationallicence close X-ray binaries nationallicence supercritical accretion nationallicence emission line formation nationallicence Medvedev P. Space Research Institute, ul. Profsoyuznaya 84/32, 117997, Moscow, Russia aut Fabrika S. Special Astrophysical Observatory, Russian Academy of Sciences, 369167, Nizhnii Arkhyz, Karachai-Cherkessian Republic, Russia aut Vasiliev V. Moscow State University, 199992, Moscow, Russia aut Goranskij V. Sternberg Astronomical Institute, Universitetskii pr. 13, 119991, Moscow, Russia aut Barsukova E. Special Astrophysical Observatory, Russian Academy of Sciences, 369167, Nizhnii Arkhyz, Karachai-Cherkessian Republic, Russia aut Astronomy Letters Springer US; http://www.springer-ny.com 39/12(2013-12-01), 826-843 1063-7737 39:12<826 2013 39 11443 https://doi.org/10.1134/S1063773713120062 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1134/S1063773713120062 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Medvedev P. Space Research Institute, ul. Profsoyuznaya 84/32, 117997, Moscow, Russia aut NATIONALLICENCE 700 1- Fabrika S. Special Astrophysical Observatory, Russian Academy of Sciences, 369167, Nizhnii Arkhyz, Karachai-Cherkessian Republic, Russia aut NATIONALLICENCE 700 1- Vasiliev V. Moscow State University, 199992, Moscow, Russia aut NATIONALLICENCE 700 1- Goranskij V. Sternberg Astronomical Institute, Universitetskii pr. 13, 119991, Moscow, Russia aut NATIONALLICENCE 700 1- Barsukova E. Special Astrophysical Observatory, Russian Academy of Sciences, 369167, Nizhnii Arkhyz, Karachai-Cherkessian Republic, Russia aut NATIONALLICENCE 773 0- Astronomy Letters Springer US; http://www.springer-ny.com 39/12(2013-12-01), 826-843 1063-7737 39:12<826 2013 39 11443 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer