def make_ring_filelist(self, sourcekeys, rings, galprop_run):
        """ Make a list of all the template files for a merged component

        Parameters
        ----------

        sourcekeys : list-like of str
            The names of the componenents to merge
        rings : list-like of int
            The indices of the rings to merge
        galprop_run : str
            String identifying the galprop parameters
        """
        flist = []
        for sourcekey in sourcekeys:
            for ring in rings:
                flist += [self.make_ring_filename(sourcekey,
                                                  ring, galprop_run)]
        return flist