A search for Keplerian periods in the brightness variations of T Tauri and Ae Herbig stars

  title={A search for Keplerian periods in the brightness variations of T Tauri and Ae Herbig stars},
  author={Svetlana A. Artemenko and Konstantin N. Grankin and P P Petrov},
  journal={Astronomy Reports},
Long-term, uniform series of U BV R observations of T Tauri and Ae Herbig stars obtained over 20 yr at the Maidanak Observatory as part of the ROTOR program are analyzed. We find a linear relationship between the characteristic variability time scale and the bolometric luminosity of the star+disk system: the higher the luminosity, the slower the brightness variations. This dependence is valid over a wide range of masses and luminosities, from T Tauri stars to Ae Herbig stars. On average, the… 

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