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pyx$65912$ - traduction vers allemand
![AAVSO]] [[light curve]] of [[recurrent nova]] T Pyx from April 13 to May 6, 2011. Up is brighter and down is fainter.](https://commons.wikimedia.org/wiki/Special:FilePath/T-Pyx-Lightcurve-2011-Eruption-AAVSO.jpg?width=200 "AAVSO]] [[light curve]] of [[recurrent nova]] T Pyx from April 13 to May 6, 2011. Up is brighter and down is fainter.")
![bandpasses]].](https://commons.wikimedia.org/wiki/Special:FilePath/T-Pyx-Lightcurve-AAVSO.gif?width=200 "bandpasses]].")
Définition
Wikipédia
T Pyxidis (T Pyx) is a recurrent nova and nova remnant in the constellation Pyxis. It is a binary star system and its distance is estimated at about 4,783 parsecs (15,600 light-years) from Earth. It contains a Sun-like star and a white dwarf. Because of their close proximity and the larger mass of the white dwarf, the latter draws matter from the larger, less massive star. The influx of matter on the white dwarf's surface causes periodic thermonuclear explosions to occur.
The usual apparent magnitude of this star system is 15.5, but there have been observed eruptions with maximal apparent magnitude of about 7.0 in the years 1890, 1902, 1920, 1944, 1966 and 2011. Evidence seems to indicate that T Pyxidis may have increased in mass despite the nova eruptions, and is now close to the Chandrasekhar limit when it might explode as a supernova. When a white dwarf reaches this limit it will collapse under its own weight and cause a type Ia supernova.
