PX And

An Eclipsing Cataclysmic Variable Star

PX And is a cataclysmic variable star of the SW Sextantis type, located in the constellation Andromeda. It is a close binary system where a white dwarf accretes material from a donor star via an accretion disk. PX And exhibits partial eclipses, superhumps, and quasi-periodic brightness variations caused by the precession of the disk. The orbital period is approximately 3.51 hours. The system is actively studied as a complex SW Sex-type star with variable accretion behavior and an unstable disk.

Photometry & Images

Catalogue Gaia
RA 7.524147337°
DEC 26.290628597°
U --
B --
V --
Parallax (mas) 1.39 ± 0.03
Light curve Light curve2

TESS Data

17 57 84

AAVSO Data

aavsodataimage

Spectroscopy

Spectrum of PX And

References

1. Stanishev V. et al. PX Andromedae: Superhumps and variable eclipse depth //Astronomy & Astrophysics. – 2002. – Т. 394. – №. 2. – С. 625-632.

2. Still M. D., Dhillon V. S., Jones D. H. P. Emission-line variations of the nova-like variable PX Andromedae (= PG0027+ 260) //Monthly Notices of the Royal Astronomical Society. – 1995. – Т. 273. – №. 4. – С. 863-876.