IRAS 00500+6713

IRAS 00500+6713 is a new type of star announced in December 2020 and created by the explosive merger of two ultra-dense white dwarfs.[1] It consists of a super hot central star, a super-Chandrasekhar object with a mass ≳1.5 M⊙ called J005311, surrounded by a nebula packed with hot gas and warm dust.[2] The star is a new kind of x-ray source,[3] it has record breaking wind speeds, and is mostly made of neon, which gives it a bright green appearance.[4] It is believed that the star is highly unstable and will collapse into a neutron star within 10,000 years.[5]

Co-orbiting white dwarfs

References
  1. Oskinova, Lidia M.; Gvaramadze, Vasilii V.; Gräfener, Götz; Langer, Norbert; Todt, Helge (2020-12-01). "X-rays observations of a super-Chandrasekhar object reveal an ONe and a CO white dwarf merger product embedded in a putative SN Iax remnant". Astronomy & Astrophysics. 644: L8. doi:10.1051/0004-6361/202039232. ISSN 0004-6361. S2CID 221293111.
  2. "This 'Unusual Star' Is Unlike Anything Astronomers Have Seen Before". Gizmodo. Retrieved 2021-01-23.
  3. Agency, European Space (2021-01-11). "Cosmic Neon Lights: Strange New Type of Star Revealed in X-ray Light". SciTechDaily. Retrieved 2021-01-23.
  4. "Strange star unlike any seen before, scientists say". Room, The Space Journal. Retrieved 2021-01-23.
  5. "Brilliant X-rays reveal what might be a new type of star". Nature. 589 (7841): 172. 2021. doi:10.1038/d41586-020-03654-x.


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