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WD 0816–310 (PM J08186–3110) is a magnetic white dwarf with metal pollution, originating from the tidal disruption of a planetary body. The metals are guided by the magnetic field onto the surface of the white dwarf, creating a "scar" on the surface of the white dwarf.
The metal-rich white dwarf WD 1145+017 is the first white dwarf observed with a disintegrating minor planet that transits the star. [178] [179] The disintegration of the planetesimal generates a debris cloud that passes in front of the star every 4.5 hours, causing a 5-minute-long fade in the star's optical brightness. [179]
The term supernova nucleosynthesis is used to describe the creation of elements during the explosion of a massive star or white dwarf. The advanced sequence of burning fuels is driven by gravitational collapse and its associated heating, resulting in the subsequent burning of carbon , oxygen and silicon .
This white dwarf started its life as a star about twice the sun's mass, living a lifespan of perhaps 1.2 billion years before entering its death throes. Many white dwarfs have a debris disk ...
Jesse Everett Hughes was born in Greenville, South Carolina, on September 24, 1972.At age seven, he moved with his mother Jo Ellen to Palm Desert, California.In high school, he met Josh Homme, and they became good friends after Homme stopped a bully from picking on Hughes.
For a star of 1 M ☉, the resulting white dwarf is of about 0.6 M ☉, compressed into approximately the volume of the Earth. White dwarfs are stable because the inward pull of gravity is balanced by the degeneracy pressure of the star's electrons, a consequence of the Pauli exclusion principle. Electron degeneracy pressure provides a rather ...
The object was identified as a white dwarf, likely with a helium-dominated atmosphere. The researchers also detected metal pollution in the form of sodium, lithium, potassium and possibly carbon. The lithium line shows Zeeman splitting, which indicates that WD J2147–4035 is a magnetic
In white dwarf stars, the positive nuclei are completely ionized – disassociated from the electrons – and closely packed – a million times more dense than the Sun. At this density gravity exerts immense force pulling the nuclei together. This force is balanced by the electron degeneracy pressure keeping the star stable. [4]