Astronomy:QS Telescopii

From HandWiki
QS Telescopii
Observation data
Equinox J2000.0]] (ICRS)
Constellation Telescopium
Right ascension   19h 38m 35.81s[1]
Declination −46° 12′ 57.0″[1]
Characteristics
Spectral type CV[1]
Astrometry
Radial velocity (Rv)110[1] km/s
Database references
SIMBADdata

QS Telescopii is a faint binary star system in the constellation Telescopium.[1] It is composed of a white dwarf and main sequence donor star, in this case the two are so close and fused into orbit facing one another. Known as polars, material from the donor star does not form an accretion disk around the white dwarf, but rather streams directly onto it.[2] This is due to the presence of the white dwarf's strong magnetic field.[3]

See also

  • Variable stars
  • Polar (cataclysmic variable)
  • AM Herculis

References

  1. 1.0 1.1 1.2 1.3 1.4 "V* QS Tel -- Cataclysmic Var. AM Her type". SIMBAD. Centre de Données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-id?Ident=QS+Tel. Retrieved 24 August 2014. 
  2. Gerke, Jill R.; Howell, Steve B.; Walter, Frederick M. (2006). "Polars Changing State: Multiwavelength Long‐Term Photometry and Spectroscopy of QS Telescopii, V834 Centauri, and BL Hydri". Publications of the Astronomical Society of the Pacific 118 (843): 678–86. doi:10.1086/503753. Bibcode2006PASP..118..678G. 
  3. Traulsen, I.; Reinsch, K.; Schwope, A. D.; Burwitz, V. et al. (2011). "XMM-Newton observations of the X-ray soft polar QS Telescopii". Astronomy and Astrophysics 529 (A116): 7. doi:10.1051/0004-6361/201016352. Bibcode2011A&A...529A.116T.