Orbital Period Variations in HT Cas: Evidence for Additional Angular Momentum Loss and a High-eccentricity Giant Planet

Orbital Period Variations in HT Cas: Evidence for Additional Angular Momentum Loss and a High-eccentricity Giant Planet

We present a timing study of the short-period eclipsing cataclysmic variable (CV) HT Cas. Based on new eclipse times derived from our photometric monitoring and archival optical data, combined with historical timings, spanning ∼42 yr, we detect a secular decrease in the orbital period at a rate of $...

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Bibliographic Details
Main Authors: Z.-T Han, S.-B Qian, Q.-W Han, L. Zang, B. Soonthornthum, L.-J Li, L.-Y. Zhu, W. Liu, E. Fernández Lajús, Z.-B Dai, W.-W Na
Format: Article
Language:English
Published: IOP Publishing 2023-01-01
Series:The Astrophysical Journal
Subjects:
Close binary stars
Eclipsing binary stars
Cataclysmic variable stars
Dwarf novae
Online Access:https://doi.org/10.3847/1538-4357/acdd6e

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