Revised physical elements of the astrophysically important O9.5+O9.5V eclipsing binary system Y Cygni

0429431 - ASÚ 2015 RIV FR eng J - Journal Article
Harmanec, P. - Holmgren, D. E. - Wolf, M. - Božić, H. - Guinan, E. F. - Kang, Y. W. - Mayer, P. - McCook, G. - Nemravová, J. - Yang, S. - Šlechta, Miroslav - Ruzdjak, D. - Sudar, D. - Svoboda, P.
Revised physical elements of the astrophysically important O9.5+O9.5V eclipsing binary system Y Cygni.
Astronomy & Astrophysics. Roč. 563, March (2014), A120/1-A120/12. ISSN 0004-6361. E-ISSN 1432-0746
R&D Projects: GA ČR GA205/06/0584
Institutional research plan: CEZ:AV0Z10030501
Keywords : binaries: spectroscopic * stars: fundamental parameters
Subject RIV: BN - Astronomy, Celestial Mechanics, Astrophysics
Impact factor: 4.378, year: 2014

Thanks to its long and rich observational history and rapid apsidal motion, the massive eclipsing binary Y Cygrepresents one of the cornerstones of critical tests of stellar evolutionary theory for massive stars. Nevertheless, the determination of the basic physical properties is less accurate than it could be given the existing number of spectral and photometric observations. Our goal is to analyse all these data simultaneously with the new dedicated series of our own spectral and photometric observations from observatories widely separated in longitude.
Permanent Link: http://hdl.handle.net/11104/0234553