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White dwarf - Wikipedia
The supposed planetesimal, WD 1145+017 b, [13] with a 4.5 hour orbit, is being ripped apart by the star and is a remnant of the former planetary system that the star hosted before becoming a white dwarf. [8] [9] It is the first observation of a planetary object being shredded by a white dwarf. Several other large pieces have been seen in orbit ...
The lithium line shows Zeeman splitting, which indicates that WD J2147–4035 is a magnetic white dwarf. The researchers measure a magnetic field strength of 0.55 ±0.03 Megagauss. The magnetism can lead to inhomogeneous brightness distribution and the TESS light curve shows that the white dwarf has a rotation period of around 13 hours. The ...
ZTF J0139+5245 (also known as J0139 and ZTF J013906.17+524536.89) is a white dwarf star approximately 564 light-years (172.9 pc) from Earth in the constellation of Perseus. [ 1 ] [ 2 ] It is the second white dwarf, after WD 1145+017 , to be observed with transits indicative of orbiting planetary material.
Janus, also known by its name ZTF J203349.8+322901.1, is a transitioning white dwarf located more than 1,300 light-years (400 pc) away [3] in the constellation Cygnus, discovered in 2019 by the Zwicky Transient Facility (ZTF), located at the Palomar Observatory, while looking for periodically variable white dwarfs. [2]
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Van Maanen's star is also the nearest solitary white dwarf [4] First white dwarf with a planet WD B1620−26: 2003 PSR B1620-26 b (planet) This planet is a circumbinary planet, which circles both stars in the PSR B1620-26 system [5] [6] First singular white dwarf with a planet WD 1145+017: 2015 WD 1145+017 b: Planet is extremely small and is ...
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