Detection of starquakes on magnetically active red dwarfs
Abstract
The scientific team of the Stephanion Observatory, University of Thessaloniki contributed to the research of high frequency optical oscillations on red dwarfs by participating in international programs for Multiwavelength observation of strong Flares of selected flare stars ([12]). These joined research shed plenty of light on the phenomenon of high frequency optical oscillations. Nevertheless a better understanding of the high-frequency oscillations demand a unified analysis of the flare light-curve for a wider time window covering pre-flare, flare and post flare and a broader band of frequencies. Thus in addition to the international campaign research the Stephanion Observatory group observe and analysis one colour (B, or U) observations of the Stephanion Observatory of different red dwarfs: EV Lac([1], [2] and [7]), AD Leo ([4] and [5]),YZ CMin ([3],[9]), V 390 Auri ([6],[10]), UV Cet([8]), at any stage of their activity (quiescence, weak flares, strong flare!
s).In this paper we present the analysis of the quiet state observations of the stars EV Lac, BY Drac , AD Leo, YZ Cmin in order to realize if starquakes appear far apart from the observed flares, during the quiet state of the stars, as a result of the general magnetic activity of the star.- Publication:
-
2015
- Pub Date:
- July 2015
- Bibcode:
- 2015hela.conf..4.5C
- Keywords:
-
- Starquakes;
- HF Optical Oscillations