BB Doradus
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Dorado |
| Right ascension | 05h 29m 28.66s |
| Declination | −58° 54′ 46.7″ |
| Apparent magnitude (V) | 14.3-19.3 |
| Characteristics | |
| Spectral type | WD + M3-4V |
| Variable type | SW Sex[1] |
| Astrometry | |
| Parallax (π) | 1.0871 ± 0.0263 mas |
| Distance | 3,000 ± 70 ly (920 ± 20 pc) |
| Absolute magnitude (MV) | 15.52[2] |
| Details | |
| Temperature | 9365 K |
| Other designations | |
| Database references | |
| SIMBAD | data |
BB Doradus or BB Dor is a cataclysmic variable or nova-like star that is a binary star system composed of a red dwarf and a white dwarf.[3] The accretion disk orbiting the white dwarf appears to be inclined at an angle of just ~10° to the line of sight from the Earth.[4]
Its parallax (movement against background stars due to the earth's orbit around the Sun) given by Gaia indicates it is about 3,000 light years away.[5]
References
- ^ Schmidtobreick, L.; et al. (October 2011). Henney, W. J.; Torres-Peimbert, S. (eds.). The structure of BB Doradus in quiescence. XIII Latin American Regional IAU Meeting. Revista Mexicana de Astronomía y Astrofísica. Vol. 40. p. 288-288. Bibcode:2011RMxAC..40..288S.
- ^ "V* BB Dor". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2020-11-22.
- ^ Watson, Christopher (24 February 2012). "BB Doradus". AAVSO Website. American Association of Variable Star Observers. Retrieved 5 November 2014.
- ^ Godon, Patrick; et al. (November 2008). "Far Ultraviolet Spectroscopic Explorer Spectroscopy of the Nova-like Cataclysmic Variable BB Doradus". The Astrophysical Journal. 687 (1): 532–541. arXiv:0805.4209. Bibcode:2008ApJ...687..532G. doi:10.1086/591494.
- ^ Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
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