irv followed by a list of
star numbers is used to display the radial velocity for the requested stars.
With the option -a, the radial velocities for one star are
extracted as well as the mean value from the literature.
With the option -v, the radial velocities for one star
are extracted and the program offers the possibility to plot
them in function of the Julian dates.
With the option -u, the radial velocities for one star and
one reference only are extracted. They are also put in the
format required by the program which computes the binary orbits.
irv 1 4 9
irv -v 774
irv -u 169 774