Tag Archive for 'Subdwarf star'

A simulation of a hypothetical J1249+36-white dwarf binary pair ends with the white dwarf exploding into a supernova. Image credit: Adam Makarenko / W.M. Keck Observatory.

Citizen Scientists Discover Hypervelocity L-Subdwarf Star in Solar Neighborhood

Jun 12, 2024 by News Staff

With an estimated distance of 140 parsecs (457 light-years), the L-subdwarf star CWISE J124909+362116.0 (J1249+36 for short) has a total speed of at least...

This artist’s impression shows the merger of two white dwarfs. Image credit: Nicole Reindl, University of Potsdam.

Astronomers Discover New Type of Subdwarf Star

Feb 14, 2022 by News Staff

Astronomers using the Large Binocular Telescope have discovered two unusual hot subdwarf stars: PG 1654+322 and PG 1528+025. While normal stars have surfaces...

An artist’s impression of HD 265435, a binary system located approximately 1,500 light-years away in the constellation of Gemini. Image credit: Mark Garlick / University of Warwick.

HD 265435 Will Explode as Type Ia Supernova in 70 Million Years, Astronomers Say

Jul 13, 2021 by News Staff

HD 265435 is a binary system with an orbital period of around 100 min that consists of a white dwarf and a hot subdwarf star. An artist’s impression...