Optical spectra of FO Aquarii during low and high accretion rates
Optical spectra of FO Aquarii during low and high accretion rates
ABSTRACT Between 2016 May and 2018 September, the intermediate polar (IP) FO Aquarii exhibited two distinct low states and one failed low state. We present optical spectroscopy of FO Aquarii throughout this period, making this the first detailed study of an accretion disc during a low state in any IP. …