V Puppis
V Puppis (V Pup) is a star system in the constellation Puppis. Its apparent magnitude is 4.41. There is a binary star system at the center with a B1 dwarf orbiting a B3 subgiant star. They have an orbital period of 1.45 days and a distance of only 15 solar radii apart. However, the system moves back and forth, indicating that there is a massive object orbiting them with a period around 5.47 years. Based on the mass of the object, its lack of a visible spectrum, and circumstellar matter in the system with many heavy elements (as would be produced by a past supernova in the system), it is probably a black hole. However, a follow-up study could not confirm this object, but found signs that there may be a third object which is fainter than the other components.
In addition to the main system, more distant components have been reported: B, at magnitude 11.5 and separation 6.2", C, at magnitude 13.2 and separation 18.9", D, at magnitude 9.88 and separation 39", and E, at magnitude 13 and separation from D of 10.4".
References
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- ^ Qian, S.-B.; Liao, W.-P.; Fernández Lajús, E. (2008). "Evidence of a Massive Black Hole Companion in the Massive Eclipsing Binary V Puppis". The Astrophysical Journal. 687 (1): 466–470. arXiv:0806.4944. Bibcode:2008ApJ...687..466Q. doi:10.1086/591515. S2CID 380178.
- ^ Budding, E; Love, T; Blackford, M G; Banks, T; Rhodes, M J (9 March 2021). "Absolute parameters of young stars: V puppis". Monthly Notices of the Royal Astronomical Society. 502 (4): 6032–6043. arXiv:2102.00362. doi:10.1093/mnras/stab381.
- ^ "MAST: Barbara A. Mikulski Archive for Space Telescopes". Space Telescope Science Institute. Retrieved 8 December 2021.
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