High-State/Low-State Photometric Behavior in the Quiescent Level of the Cataclysmic Variable HT Cassiopeiae

Astronomy and Astrophysics – Astronomy

Scientific paper

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Stars: Individual: Ht Cassiopeiae, Cataclysmic Variables

Scientific paper

We discuss the long-term quiescent light curve of the dwarf nova HT Cassiopeiae, with particular emphasis on the 1991-1995 behavior. HT Cas had no outbursts for at least eight years prior to a 1995 November 17 outburst. Its 1991-1995 light curve while in quiescence exhibits ˜1.8 mag long-time-scale variations from about 15.9 to 17.7 mag. This is remarkable because dwarf novae while in quiescence have not previously been described as exhibiting the kind of systematic high-state/low-state variations previously associated only with magnetic and VY Scl cataclysmic variables.

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