Chromospheric activity and orbital solution of six new late-type spectroscopic binary systems Chromospheric activity

M Gálvez, D Montes, M Fernández-Figueroa, J López-Santiago
Radial Velocities Heliocentric radial velocities of the principal components have been determined by using the cross-correlation technique. The spectra of the program stars were cross-correlated order by order, using the routine FXCOR in IRAF, against spectra of radial velocity standards of similar spectral types. The radial velocity of the components is derived from the position of the cross-correlation peak. In the case of BD+39 2587 we observe the chromospheric emission lines of both
more » ... ts and the secondary radial velocities have been measured with the variations in the wavelength between primary and secondary emission lines.