This study aims timing the eclipses of the short period low mass binary star AB And. The times of minima are taken from the literature and from our observations in October 2013 (22 times of minima) and in August 2014 (23 times of minima). We find and discuss an inaccuracy in the determination of the types of minima in the previous investigation by \citet{li2014}. We study the secular evolution of the central binary's orbital period and the possibility of the existence of third and fourth companions in the system.
@article{arxiv.1707.07430,
title = {Timing of AB And eclipses},
author = {V. S. Kozyreva and M. A. Ibrahimov and E. R. Gaynullina and R. G. Karimov and B. M. Hafizov and B. L. Satovskii and V. N. Krushevska and Yu. G. Kuznyetsova and A. I. Bogomazov and T. R. Irsmambetova and A. V. Tutukov},
journal= {arXiv preprint arXiv:1707.07430},
year = {2017}
}
Comments
14 pages, 3 figures, 3 tables, accepted by New Astronomy