Artist's impression of a white dwarf, G29-38, accreting planetary material from a circumstellar debris disk. When the planetary material hits the white dwarf surface, a plasma is formed and cools via detectable X-ray emission....

... ur in a subsclass of cataclysmic binaries called intermediate polars (IP). The systems consist of a compact, highly magnetic white dwarf stripping matter from a closely orbiting red dwarf partner. As the stolen material is funnelled along magnetic fi ...

Illustration of an ultra-cool dwarf star with a companion white dwarf. Ace citizen scientist Frank Kiwy used the Astro Data Lab science platform at the National Science Foundation's NOIRLab to discover 34 new ultra-cool dwarf binary systems in the Su...

Astronomers from the University of Warwick, UK, have observed a pair of old white dwarf stars, both of which have had their atmospheres polluted by infalling planetary material. The two stars do not orbit each others and are not related. One is a coo...

The white dwarf WD1054-226 exhibits a constant stream of transits by debris and or dust in orbit about it, with an underlying period of 25.02 hours. Astronomers believe that the material orbits within the star's habitable zone, where the temperature ...

The white dwarf shown in the illustration is one of several that an international team of astronomers has been studying. Called ZTF J0923+4236, the star exhibits a series of dips in its brightness. The team, led by Amornrat Aungwerojwit from Naresuan...

Artwork of an imaginary planetary nebula. This is a glowing shell of gas cast off by a star near the end of its life. The star can be seen at the centre of the nebula. The Sun will one day form a planetary nebula, once its internal stock of hydrogen ...