FBS 0107-082: A Symbiotic Binary in a Rare Prolonged Outburst?

摘要

FBS 0107-082 is an emission line object previously classified as a nova-like cataclysmic variable star. New optical spectroscopy shows very strong hydrogen Balmer lines, along with a nebular forbidden line spectrum and absorption features from an early-F photosphere. When combined with other IR and optical data from the literature, these data point to the object being a symbiotic nova seen in a prolonged outburst. Photometry on timescales of minutes, days, and years shows only very weak variability.