Here’s a list of the line profile indicators currently implemented in iCCF

1. FWHM
2. BIS (bisector inverse slope)
3. Vspan
4. Wspan

FWHM

The FWHM is simply the full width at half maximum of the Gaussian fit to the CCF.
It is measured in the same units as the radial velocity, tipically km/s.

BIS (bisector inverse slope)

Vspan

Wspan