Light variations and angular momentum loss from the He-strong magnetic   chemically peculiar star HD 37776
  We present a principle component analysis of multicolour light variations of the He-strong magnetic chemically peculiar star HD 37776 and its (O-C) diagram. The period increase rate found, (dP/dt) / P = 5.5 x 10^{-6}/year, is consistent with the conception of angular momentum loss through magnetically confined stellar wind. 
Zdenek Mikulasek, Jiri Krticka, Juraj Zverko, Jozef Ziznovsky, Jan   Janik