naa a22 4500 510732232 CHVBK 20180411082957.0 cr unu---uuuuu 180411e20131201xx s 000 0 eng 10.1134/S1063772914010041 doi (NATIONALLICENCE)springer-10.1134/S1063772914010041 Spectral observations of ɛ aurigae during the 2009-2011 eclipse [Elektronische Daten] [I. Potravnov, V. Grinin] Results of spectral observations of the unique eclipsing binary ɛ Aur obtained during its recent eclipse are presented. Profile variations of many spectral lines at different eclipse phases can be traced. These variations are partly due to absorption of the stellar radiation in a rotating disk of gas and dust around the second component and partly due to geometric screening of the stellar photosphere and circumstellar region by the disk. A comparison of these results with analogous results obtained by Lambert and Sawyer during the previous (1982-1984) eclipse of ɛ Aur indicates good agreement, suggesting stability of the gas-dust disk surrounding the invisible component in the binary. The masses of the binary components are estimated using new observational data. Pleiades Publishing, Ltd., 2013 Potravnov I. Central (Pulkovo) Astronomical Observatory, Russian Academy of Sciences, St. Petersburg, Russia aut Grinin V. Central (Pulkovo) Astronomical Observatory, Russian Academy of Sciences, St. Petersburg, Russia aut Astronomy Reports Springer US; http://www.springer-ny.com 57/12(2013-12-01), 991-1000 1063-7729 57:12<991 2013 57 11444 https://doi.org/10.1134/S1063772914010041 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1134/S1063772914010041 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Potravnov I. Central (Pulkovo) Astronomical Observatory, Russian Academy of Sciences, St. Petersburg, Russia aut NATIONALLICENCE 700 1- Grinin V. Central (Pulkovo) Astronomical Observatory, Russian Academy of Sciences, St. Petersburg, Russia aut NATIONALLICENCE 773 0- Astronomy Reports Springer US; http://www.springer-ny.com 57/12(2013-12-01), 991-1000 1063-7729 57:12<991 2013 57 11444 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer