Anomalous Orbital Characteristics of the AQ Col (EC 05217-3914) System
Anomalous Orbital Characteristics of the AQ Col (EC 05217-3914) System
Abstract AQ Col (EC 05217-3914) is one of the first detected pulsating subdwarf B (sdB) stars and has been considered to be a single star. Photometric monitoring of AQ Col reveals a pulsation timing variation with a period of 486 days, interpreted as time delay due to reflex motion in …