HS 0220+0603

An Eclipsing Cataclysmic Variable Star

HS 0220+0603 is a nova-like cataclysmic variable star of the SW Sextantis subtype. It is a close binary system where a white dwarf accretes material from a donor star via an accretion disk. The system shows eclipses and typical SW Sex features such as phase-shifted emission lines, high-velocity accretion streams, and strong Hα and He II line components. The orbital period is about 3.58 hours. The system also exhibits both quiescent and active states, possibly due to changes in the accretion regime or magnetic activity. With its eclipsing geometry and strong spectral features, HS 0220+0603 is an important system for understanding the behavior and evolution of SW Sextantis stars.

Photometry & Images

Catalogue Gaia
RA 35.756966679°
DEC 6.280415283°
U --
B --
V --
Parallax (mas) 1.16 ± 0.12
Light curve

TESS Data

sectors31 sectors42 sectors43

AAVSO Data

aavsodataimage

Spectroscopy

Spectrum of HS 0220+0603 Spectrum of HS 0220+0603

References

1. Rodríguez-Gil P. et al. Dynamical masses of a nova-like variable on the edge of the period gap //Monthly Notices of the Royal Astronomical Society. – 2015. – Т. 452. – №. 1. – С. 146-157.

2. Cori W., Tello J. Cataclysmic variable stars: photometry of V893 Sco star and spectroscopy of HS 0220+ 0603 star //Journal of Physics: Conference Series. – IOP Publishing, 2018. – Т. 1143. – №. 1. – С. 012010.