We describe our programme to identify and analyse binary stars among the bright subdwarfs selected in the Galaxy Evolution Explorer (GALEX) survey. Radial velocity time-series helped us identify subdwarfs with low-mass or compact stellar companions: We describe work conducted on the bright binaries GALEX J0321+4727 and GALEX J2349+3844, and we present a radial velocity study of several objects that include three new likely binaries. We also carried out photometric observations that allowed us to detect long period pulsations in the subdwarf components in two of the close binaries.
@article{arxiv.1204.0928,
title = {Binary properties of subdwarfs selected in the GALEX survey},
author = {Adela Kawka and Andrzej Pigulski and Simon O'Toole and Stephane Vennes and Peter Nemeth and Andrew Williams and Lubomir Iliev and Zbyszek Kolaczkowski and Marek Steslicki},
journal= {arXiv preprint arXiv:1204.0928},
year = {2012}
}
Comments
published in the proceedings of the Fifth Meeting on Hot Subdwarf Stars and Related Objects