The Halpha, Hbeta and Hdelta lines in the spectrum RR Tauri
  The results of spectroscopic study of Ae Herbig star RR Tau are reported. The observations were carried out with a moderate resolution. In accordance with the presented data the Halpha line exhibits a double-peaked emission profile. The blue component is weaker than or equal to the red one. Variations of the Halpha equivalent width by a factor of 4 - 5 were found. The structure of this line also varies. On JD 2447148 a red absorption reversal of the Halpha profile was observed. The Hbeta spectral line exhibited both emission and absorption. On JD 2449664 the single-peak emission shifted to the short wavelength range of the underlying absorption line and the red wing of the stellar line looked like a red-shifted absorption component of medium strength. The Hdelta line was in absorption. 
V.I. Kardopolov, L.N. Kondratyeva