Astronomers Discover New Type of Subdwarf Star astronomy space science
to happen between white dwarfs in close binary systems due to the shrinking of the orbit caused by the emission of gravitational waves.
“This does not normally lead to the formation of a star enriched in carbon and oxygen,” said Dr. Nicole Reindl, an astronomer with the Institut für Astronomie und Astrophysik in the Kepler Center for Astro and Particle Physics at the Universität Tübingen, and co-author of the main paper. “However, we believe that in binary systems with very specific stellar masses, a white dwarf with a carbon-oxygen core can be ripped apart by tidal forces.”
“Its material is then dumped on the surface of its white dwarf companion, leading to the formation of these exotic stars.”
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