We re-investigate UZ Librae spectra obtained at KPNO in 1998 and 2000. From the 1998 data we compose 11 consecutive Doppler images using the Ca I-6439, Fe I-6393 and Fe I-6411 lines. Applying the method of average cross-correlation of contiguous Doppler images we find anti-solar differential rotation with a surface shear of alpha ~ -0.03. The pilot application of the local correlation tracking technique for the same data qualitatively confirms this result and indicates complex flow pattern on the stellar surface. From the cross-correlation of the two available Doppler images in 2000 we also get anti-solar differential rotation but with a much weaker shear of alpha ~ -0.004.
@article{arxiv.0711.1187,
title = {Anti-solar differential rotation and surface flow pattern on UZ Librae},
author = {K. Vida and Zs. Kővári and M. Švanda and K. Oláh and K. G. Strassmeier and J. Bartus and E. Forgács-Dajka},
journal= {arXiv preprint arXiv:0711.1187},
year = {2013}
}