Detecting companions to Cepheids is difficult. In most cases the bright pulsator overshines the fainter secondary. Since Cepheids play a key role in determining the cosmic distance scale it is crucial to find binaries among the calibrating stars of the period-luminosity relation. Here we present an ongoing observing project of searching for faint and close companions of Galactic Cepheids using lucky imaging technique.
@article{arxiv.1401.2194,
title = {Hunting for binary Cepheids using lucky imaging technique},
author = {P. Klagyivik and L. Szabados and A. Szing and Zs. Regály},
journal= {arXiv preprint arXiv:1401.2194},
year = {2014}
}
Comments
4 pages, 2 figures, published in AN. Proceedings for the 6th Workshop of Young Researchers in Astronomy and Astrophysics