Investigating magnetic activity in very stable stellar magnetic fields: long-term photometric and spectroscopic study of the fully convective M4 dwarf V374 Peg

  title={Investigating magnetic activity in very stable stellar magnetic fields: long-term photometric and spectroscopic study of the fully convective M4 dwarf V374 Peg},
  author={Kriszti{\'a}n Vida and L. Kriskovics and Katalin Ol'ah and Martin Leitzinger and Petra Odert and Zs. KHov'ari and Heidi Korhonen and Robert Greimel and Russell M. Robb and B. Cs'ak and J. Kov'acs},
  journal={arXiv: Solar and Stellar Astrophysics},
The ultrafast-rotating ($P_\mathrm{rot}\approx0.44 d$) fully convective single M4 dwarf V374 Peg is a well-known laboratory for studying intense stellar activity in a stable magnetic topology. As an observable proxy for the stellar magnetic field, we study the stability of the light curve, and thus the spot configuration. We also measure the occurrence rate of flares and coronal mass ejections (CMEs). We analyse spectroscopic observations, $BV(RI)_C$ photometry covering 5 years, and additional… 
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