#x	ikik		IK	
0.01 4.914358212	     .4999645982
0.5  1.093640050	     .4720469932
1    .5559175780	     .4271867321
1.5  .3177875952	     .3817241894
2    .1928713241	     .3401733509
2.1  .1754675826	     .3324654606
2.2  .1598809878	     .3249663470
2.5  .1219950640	     .3037168453
3    .0797762866	     .2723022915
3.5  .0537160429	     .2454292756
4    .0371549719	     .2224758263
4.5  .0263579710	     .2028341765
5    .01915	             .1859622179
6    .0108030766	     .1587532389
8    .0042935158	     .1218322724
10   .00211678011	     .09842826539
#Bessel functions for rotation curves of an exponential disk
#x = R/h = number of scale lengths
#ikik = I0(x/2)K0(x/2)-I1(x/2)K1(x/2)	Freeman (1970)
#IK = I1(x/2)*K1(x/2)		Mannheim & Kmetko (1996)