| 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) | 103 - 105 | |
| Section | Winds, Mass Loss, Jets | |
| DOI | https://doi.org/10.1051/eas/1571020 | |
| Published online | 01 December 2015 | |
E. Lagadec, F. Millour and T. Lanz (eds)
EAS Publications Series, 71–72 (2015) 103-105
Outburst Activity Driven by Evolved Pulsating Star in the Symbiotic Binary AG Dra
1 Institute of Physics, Faculty of Science, P.J. Šafárik University, Park Angelinum 9, Košice 040 01, The Slovak Republic
2 Astronomical Institute, Slovak Academy of Sciences, Tatranská Lomnica 059 60, The Slovak Republic
3 Tartu Observatory, Observatooriumi 1, Tõravere, 61602 Tartumaa, Estonia
e-mail: rudolf.galis@upjs.sk
The symbiotic system AG Dra regularly undergoes quiescent and active stages which consist of the series of individual outbursts. The period analysis of new and historical photometric data, as well as radial velocities, confirmed the presence of the two periods. The longer one around ≈ 550 d is related to the orbital motion and the shorter one ≈355 d could be due to pulsation of the cool component of AG Dra.
© EAS, EDP Sciences, 2015