X-ray diagnostics of chemical composition of the accretion disk and donor star in UCXBs II: XMM-Newton observations

Filippos Koliopanos, Marat Gilfanov, Lars Bildsten +1

We search for the Fe K$\alpha$ line in spectra of Ultra Compact X-ray Binaries (UCXBs). For this purpose we have analyzed XMM-Newton observations of five confirmed UCXBs. We find that t…