| Issue |
EAS Publications Series
Volume 71-72, 2015
The Physics of Evolved Stars: A Conference Dedicated to the Memory of Olivier Chesneau
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|
|---|---|---|
| Page(s) | 175 - 179 | |
| Section | Binaries | |
| DOI | https://doi.org/10.1051/eas/1571039 | |
| Published online | 01 December 2015 | |
E. Lagadec, F. Millour and T. Lanz (eds)
EAS Publications Series, 71–72 (2015) 175-179
Yet Another Spectro-Interferometric Study of The Gas Distribution in The Enigmatic Semi-Detached Binary β Lyrae
1 Astronomical Institute of the Charles University, Faculty of Mathematics and Physics, V Holešovičkách 2, 180 00, Praha 8, Czech Republic
2 Laboratoire Lagrange, UMR 7293, UNS-CNRS-OCA, Boulevard de l'Observatoire, BP. 4229, 06304 Nice Cedex 4, France
e-mail: jana.nemravova@gmail.com; hec@sirrah.troja.mff.cuni.cz
The majority of close binaries undergo episodes of mass transfer between their components, which completely change their further evolution. Simulations and observations agree that the mass transfer has two phases: i) short and rapid one, and ii) long and slow one. The bulk of the mass is likely exchanged during the rapid phase, but due to its shortness, systems undergoing this phase are rare, but they hold the key to understanding of the process. One system that is either undergoing the rapid mass transfer phase or is in a transient phase between the two phases is β Lyrae. Our goal is to map the distribution of circumstellar gas in the system. To achieve it, a series of spectro-interferometric observations acquired with the optical instrument VEGA/CHARA are investigated. Here we present our tools and preliminary results of our analysis.
© EAS, EDP Sciences, 2015