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 +- 0.0035 and 0.6197 +- 0.0034 Msun and the radii to be 0.67 +- 0.03 and 0.63$ +- 0.03 Rsun for primary and secondary component, respectively. Both components are significantly oversized compared to theoretical models, which we attribute to their high activity. They show Halpha, Hbeta, Hgamma, Ca H and Ca K lines in emission, and are heavily spotted, causing large variations of the light curve.
@article{arxiv.1211.5291,
title = {Absolute parameters of AE For -- a highly active detached binary of late K type},
author = {M. Rozyczka and P. Pietrukowicz and J. Kaluzny and W. Pych and R. Angeloni and I. Dekany},
journal= {arXiv preprint arXiv:1211.5291},
year = {2015}
}