W. Gyllenberg 



.00 



-h 1.00 



Per. .0 .1 .2 .3 .4 .5 ,6 .7 .8 .9 1.0 1.1 1.2 1.3 1.4 



Fig. 4. 



Lichtknrve X = l'-.462. 













1 















































Per. .0 .1 .2 .3 .4 .5 .6 .7 .8 .9 1.0 1.1 1.2 1.3 1.4 



Fig. 6. 



Lichtkurve l = l>-Å22. 



