Nine new eclipsing accreting ultracompact white dwarf binaries from the Zwicky Transient Facility

J. van Roestel, M. J. Green, T. L. S. Wong +21

Accreting ultracompact white dwarf binaries (accreting UCBs) transfer helium-rich material at orbital periods below about 65 min, and mainly divide into hydrogen-free AM CVn binari…