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White dwarfs hotter than 27,000 K sublimate all the dust formed by tidally disrupting a rocky body, preventing the formation of a debris disk. In colder white dwarfs, a rocky body might be tidally disrupted near the Roche radius and forced into a circular orbit by the Poynting–Robertson drag, which is stronger for less massive white dwarfs ...
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 disintegrating. First white dwarf that is a pulsar: AR Scorpii A ...
A pulsating white dwarf is a white dwarf star whose luminosity varies due to non-radial gravity wave pulsations within itself. Known types of pulsating white dwarfs include DAV, or ZZ Ceti, stars, with hydrogen-dominated atmospheres and the spectral type DA; [1] DBV, or V777 Her, stars, with helium-dominated atmospheres and the spectral type DB; [2] and GW Vir stars, with atmospheres dominated ...
George Valentine Dureau (December 28, 1930 – April 7, 2014) was an American artist whose long career was most notable for charcoal sketches and black and white photography of poor white and black athletes, dwarfs, and amputees. [1]
The Seven Dwarfs return just in time and Snow White is saved when the Dwarfs cut the lace. The Queen comes once again, this time dressed as a comb seller. She gives Snow White a poisoned comb, but the Seven Dwarfs save her again. The Queen then appears disguised as a farmer's wife and gives Snow White a poisoned apple.
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. [7] [8] It is the first observation of a planetary object being shredded by a white dwarf. Several other large pieces have been seen in orbit ...
HM Cancri (also known as HM Cnc or RX J0806.3+1527) is a binary star system about 1,600 light-years (490 pc; 1.5 × 10 16 km) away. [2] It comprises two dense white dwarfs orbiting each other once every 5.4 minutes, at an estimated distance of only 80,000 kilometres (50,000 mi) apart (about 1/5 the distance between the Earth and the Moon).
Pages in category "White dwarfs" The following 155 pages are in this category, out of 155 total. This list may not reflect recent changes. ...