We present photometric and spectroscopic analysis of AE For – a detached eclipsing binary composed of two late K dwarfs .
The masses of the components are found to be 0.6314 \pm 0.0035 and 0.6197 \pm 0.0034 M _ { \odot } and the radii to be 0.67 \pm 0.03 and 0.63 \pm 0.03 R _ { \odot } for primary and secondary component , respectively .
Both components are significantly oversized compared to theoretical models , which we attribute to their high activity .
They show H _ { \alpha } , H _ { \beta } , H _ { \gamma } , Ca H and Ca K in emission , and are heavily spotted , causing large variations of the light curve .