CLUMPED STRUCTURE OF WR WIND DERIVED FROM IR OBSERVATIONS OF WR- SOMECOMMENTS ON THE LIGHT-CURVE SOLUTION FOR V444 CYGNI(O BINARIES )

Strong increasing of the width and the depth of the secondary minimum of the light curve of V444 Cyg Wolf-Rayet eclipsing binary discovered by Cherepashchuk and Khaliullin (1973, 1975) from simultaneous narrow band continuum observations (lambda lambda 4244-7512 Angstrom) have be en confirmed by new quasi-simultaneous UJK observations. This increasi ng of the width and the depth of the secondary minimum implies strong increasing of the radius of the extended atmosphere of the WN5 star wi th wavelength, which cannot be explained be the theory of homogeneous WR wind. These data can be understood in the model of WR wind proposed by Cherepashchuk et al. (1984). New data, supporting the reliability of the light curve solution for V444 Cyg of Cherepashchuk (1975) are p resented.