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Mt. Suhora Survey - Searching for Pulsating M Dwarfs. I

Baran A. S., Winiarski M., Krzesiński J., Fox-Machado L., Kawaler S. D., Dróżdż M., Faltenbacher A., Thompson M. A., Reed M. D.

Acta Astronomica

2011

Vol. 61, No. 1

37--58

We present the first results of our M dwarf survey in search for stellar pulsation in low mass main sequence stars. Theoretical calculations predict that ε mechanism might drive a fundamental radial mode in these stars and therefore pulsations could be observed photometrically. Although M dwarfs are known for their flare and spot activity they have not yet been the subject of dedicated time-series surveys for pulsation. In this work we include the light curves and amplitude spectra of 46 M dwarfs, which have been observed during the first two years of our survey. We did not detect any pulsations yet. As a by-product of our search, we describe the light curves of some flare M dwarfs. The survey will last for two more years and during that period more than a hundred of M0-M4 type main sequence stars will be observed.